JP2020007162A - Method for generating chlorine dioxide gas, liquid composition, gel-like composition, and chlorine dioxide gas generating kit - Google Patents

Abstract

To enable generating a chlorine dioxide gas instantaneously and stably over a long period of time, while enabling concentration of the generated chlorine dioxide gas to be freely controlled.SOLUTION: An aqueous chlorite solution, an activator for adjusting pH of the aqueous chlorite solution in a rapidly effective manner, an activation inhibitor for reducing action of the activator in a delayed effective manner, and metal iodide are mixed at a ratio of 0.4% by weight or less of the metal iodide and 1% by weight or less of the activation inhibitor to 1 liter of 1% by weight of the aqueous chlorite solution to generate chlorine dioxide gas from a resulting liquid composition at a stable concentration in the rapidly effective manner.SELECTED DRAWING: None

Description

  The present invention relates to a technique for generating chlorine dioxide gas immediately and at a stable concentration.

  Chlorine dioxide has a strong oxidizing power, and it is known that the oxidizing action removes bacteria and decomposes odorous components. For this reason, chlorine dioxide is widely used as a disinfectant, a deodorant, a fungicide, or a bleaching agent. In these applications, chlorine dioxide is often used in the form of chlorine dioxide gas.

  As an example of a method of generating chlorine dioxide gas, a method of adding an activator such as an organic acid or an inorganic acid to an aqueous chlorite solution is disclosed in, for example, JP-A-2005-29430 (Patent Document 1). . In the method of Patent Document 1, the generation amount of chlorine dioxide gas is adjusted using a gas generation regulator such as theopylite or zeolite. Although there is no specific description in Patent Literature 1, since theophyllite and zeolite are porous, when the amount of generated gas is large, excess gas is retained inside the gas generation regulator, and when the amount of generated gas is small. It is presumed that the amount of gas generated was adjusted by discharging the gas held in the gas.

  However, the amount of gas generated cannot be sufficiently adjusted only by the physical adsorption action, and the rapid increase in the concentration of chlorine dioxide gas after the addition of the activator to the aqueous chlorite solution can be sufficiently suppressed. Can not. For this reason, Patent Document 1 states that chlorine dioxide gas is continuously generated, but the effect has to be limited. If a weak acid is used as the activator, a rapid increase in the concentration of chlorine dioxide gas can be suppressed, but there is a drawback that it takes time to reach the maximum concentration and lacks immediate effect. Further, the concentration of generated chlorine dioxide gas depends only on the concentration of chlorite, and the maximum concentration could not be controlled.

JP 2005-29430 A

  It is desired that the concentration of the generated chlorine dioxide gas can be freely controlled, and that the chlorine dioxide gas can be generated quickly and stably for a long period of time.

The first method for generating chlorine dioxide gas according to the present invention comprises:
A chlorite aqueous solution, an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas, and an activation inhibitor that reduces the action of the activator slowly. And a metal iodide are obtained by mixing the metal iodide at a ratio of 0.4% by mass or less and the activation inhibitor at a ratio of 1% by mass or less per 1 L of the 1% by mass aqueous chlorite solution. It is characterized in that chlorine dioxide gas is generated from a liquid composition immediately and at a stable concentration.

The second method for generating chlorine dioxide gas according to the present invention comprises:
A chlorite aqueous solution, an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas, and an activation inhibitor that reduces the action of the activator slowly. A mixture of a metal iodide and a water-absorbing resin in a ratio of 0.4% by mass or less of the metal iodide and 1% by mass or less of the activation inhibitor per 1 L of the 1% by mass aqueous chlorite solution. Then, chlorine dioxide gas is generated from the obtained gel composition in an immediate and stable concentration.

The liquid composition according to the present invention,
A chlorite aqueous solution, an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas, and an activation inhibitor that reduces the action of the activator slowly. A metal iodide in an amount of 0.4% by mass or less of the metal iodide and 1% by mass or less of the activation inhibitor per 1 L of the aqueous chlorite solution of 1% by mass, and chlorine dioxide gas. It is characterized in that it is generated quickly and at a stable concentration.

The gel composition according to the present invention,
A chlorite aqueous solution, an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas, and an activation inhibitor that reduces the action of the activator slowly. Containing 1% by mass or less of the metal iodide and 1% by mass or less of the activation inhibitor per 1 L of 1% by mass of the aqueous chlorite solution containing 1% by mass of the metal iodide and the water-absorbing resin. It is characterized in that chlorine dioxide gas is generated immediately and in a stable concentration.

The first chlorine dioxide gas generation kit according to the present invention comprises:
A first agent comprising an aqueous chlorite solution,
A second agent containing an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas,
An activation inhibitor that reduces the action of the activator in a delayed manner, and a metal iodide, respectively, are included in any of the first drug and the second drug,
Per 1 L of the aqueous chlorite solution of 1% by mass, the metal iodide is 0.4% by mass or less, and the activation inhibitor is 1% by mass or less;
It is characterized in that chlorine dioxide gas is generated immediately and at a stable concentration from a liquid composition obtained by mixing the first drug and the second drug.

The second chlorine dioxide gas generation kit according to the present invention comprises:
A first agent comprising an aqueous chlorite solution,
A second agent comprising an activator and a water-absorbing resin that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas,
An activation inhibitor that reduces the action of the activator in a delayed manner, and a metal iodide, respectively, are included in any of the first drug and the second drug,
Per 1 L of the aqueous chlorite solution of 1% by mass, the metal iodide is 0.4% by mass or less, and the activation inhibitor is 1% by mass or less;
The method is characterized in that chlorine dioxide gas is immediately generated at a stable concentration from a gel composition obtained by mixing the first drug and the second drug.

  According to these constitutions, when the respective components are mixed, the activator acts quickly to generate chlorine dioxide gas quickly. At this time, 0.4% by mass or less of metal iodide acts as a catalyst, and the generation of chlorine dioxide gas in the early stage of mixing is promoted. Therefore, even when, for example, a weak acid is used as the activator, the time required for the chlorine dioxide gas to reach the maximum concentration can be reduced. Thereafter, the effect of the activator is reduced by the slow activation of the activation inhibitor of 1% by mass or less, whereby the generation of chlorine dioxide gas becomes slow. As a result, while the chlorine dioxide gas is generated immediately at the initial stage after mixing, the rapid increase in the concentration is suppressed, and the chlorine dioxide gas is gradually released. Therefore, chlorine dioxide gas can be generated immediately and stably for a long period of time. Further, by adjusting the amount of the activation inhibitor added, the concentration of the generated chlorine dioxide gas can be freely controlled.

  Hereinafter, preferred embodiments of the present invention will be described. However, the scope of the present invention is not limited by the following preferred embodiments.

In one aspect,
It is preferable that the activation inhibitor is not less than 0.03% by mass and not more than 0.3% by mass per 1 L of the 1% by mass aqueous chlorite solution.

In one aspect,
It is preferable that the metal iodide is 0.01% by mass or more and 0.4% by mass or less per 1L of the 1% by mass aqueous chlorite solution.

In one aspect,
It is preferable that the mass ratio between the activation inhibitor and the metal iodide is 3: 1 to 1: 3.

  According to these configurations, the concentration of the generated chlorine dioxide gas can be freely controlled particularly favorably, and the chlorine dioxide gas can be generated immediately and stably for a long period of time.

In one aspect,
It is preferable that the activation inhibitor is an alkali metal silicate or an alkaline earth metal silicate.

  According to this configuration, when the alkali metal silicate or the alkaline earth metal silicate is dissolved in the aqueous solution, hydroxide ions can be generated by hydrolysis. Therefore, the action of the activator, which often uses an acid, can be effectively reduced by the neutralization reaction, and the concentration of chlorine dioxide gas can be freely controlled.

In one aspect,
Preferably, the activation inhibitor is sodium silicate.

  According to this configuration, the concentration of chlorine dioxide gas can be freely controlled at low cost using easily available and relatively inexpensive sodium silicate.

In one aspect,
Preferably, the metal iodide is potassium iodide.

  According to this configuration, the generation of chlorine dioxide gas in the initial stage of mixing can be promoted at low cost by using easily available and relatively inexpensive potassium iodide.

In one aspect,
Preferably, the activator is an inorganic or organic acid, or a salt thereof.

  According to this configuration, chlorine dioxide gas can be quickly and appropriately generated in the initial stage after mixing the components.

In one aspect,
It is preferable that the first drug is sealed in a hermetically sealed first container and the second drug is sealed in a second hermetically sealed container different from the first container.

  According to this configuration, it is possible to prevent oxygen and moisture from being mixed in from the atmosphere, and it is possible to prevent the first drug and the second drug from deteriorating. Therefore, the first drug and the second drug can be stably stored for a long time before use.

In one aspect,
It is preferable that the first medicine and the second medicine are sealed in a common hermetic container in a state where they are isolated from each other by an isolation part which can be manually released.

  According to this configuration, it is possible to prevent oxygen and moisture from being mixed in from the atmosphere, and it is possible to prevent the first drug and the second drug from deteriorating. Therefore, the first drug and the second drug can be stably stored for a long time before use. Further, in this configuration, the first medicine and the second medicine can be handled collectively in a common hermetic container, and the portability is excellent. At the time of use, the first agent and the second agent can be easily mixed in a common hermetically sealed container only by manually releasing the separating portion.

In one aspect,
It is preferable that the separating section is constituted by a labyrinth structure section.

  According to this configuration, it is possible to more reliably prevent the aqueous solution of chlorite contained in the first drug from penetrating the isolation portion and reaching the second drug during storage. Therefore, it is possible to more reliably prevent the chlorine dioxide gas from unintentionally starting to be generated during storage.

In one aspect,
It is preferable that the first agent is enclosed in a hermetically sealable and easily breakable first container, and the second agent is enclosed in a hermetically sealed second container together with the first container.

  According to this configuration, it is possible to prevent oxygen and moisture from being mixed in from the atmosphere, and it is possible to prevent the first drug and the second drug from deteriorating. Therefore, the first drug and the second drug can be stably stored for a long time before use. Further, with this configuration, the first medicine sealed in the first container can be handled together with the second medicine in the second container, and the portability is excellent. In use, the first agent and the second agent can be easily mixed in the second container only by breaking the first container by applying an external force.

  Further features and advantages of the present invention will become more apparent from the following description of exemplary and non-limiting embodiments described with reference to the drawings.

Principle explanatory diagram of the generation method for releasing chlorine dioxide gas gradually Graph showing the time course of chlorine dioxide gas concentration Schematic view of the appearance of the chlorine dioxide gas generation kit of the first embodiment Schematic diagram showing one aspect of a method for generating chlorine dioxide gas Schematic diagram showing an example of usage of the gel composition Appearance schematic diagram of chlorine dioxide gas generation kit of second embodiment Enlarged sectional view near the isolation part Schematic diagram showing one aspect of a method for generating chlorine dioxide gas Schematic diagram showing an example of usage of the gel composition External appearance schematic diagram of a chlorine dioxide gas generation kit of a third embodiment

[First Embodiment]
A first embodiment of a method for generating chlorine dioxide gas, a liquid composition, a gel composition, and a chlorine dioxide gas generation kit will be described. The method for generating chlorine dioxide gas of this embodiment comprises mixing a chlorite aqueous solution, a fast-acting activator, a metal iodide, a slow-acting activation inhibitor, and optionally a water-absorbing resin. Then, chlorine dioxide gas is generated immediately and at a stable concentration. This method comprises, in this embodiment, a first drug 1 comprising an aqueous chlorite solution, a metal iodide, and a slow-acting activation inhibitor, and a fast-acting activator and optionally a water-absorbing resin. This is performed using a chlorine dioxide gas generation kit K including the second chemical 2 (see FIG. 3). From a liquid composition or a gel composition 3 (see FIG. 5) obtained by mixing the first drug 1 and the second drug 2 of the chlorine dioxide gas generating kit K, chlorine dioxide gas is immediately and stably obtained. It can be generated at a concentration.

  In the following, an example is described in which a water-absorbent resin as an optional component is also mixed to generate chlorine dioxide gas from the gel composition 3 immediately and at a stable concentration.

The chlorite aqueous solution is an aqueous solution containing chlorite. The chlorite contained in the aqueous chlorite solution is not particularly limited as long as it is stable itself and is activated by mixing with the activator to generate chlorine dioxide gas. Examples of the chlorite include alkali metal chlorite or alkaline earth metal chlorite. Examples of the alkali metal chlorite include sodium chlorite (NaClO ₂ ), potassium chlorite (KClO ₂ ), and lithium chlorite (LiClO ₂ ). Examples of the alkaline earth metal chlorite include calcium chlorite (Ca (ClO ₂ ) ₂ ), magnesium chlorite (Mg (ClO ₂ ) ₂ ), and barium chlorite (Ba (ClO ₂ ) ₂ ) Is exemplified. Among these, sodium chlorite can be suitably used.

  The pH of the aqueous chlorite solution before mixing is not particularly limited, but is preferably 9 or more and 13 or less. The pH of the aqueous chlorite solution is more preferably 10 or more and 12.5 or less, and even more preferably 11 or more and 12 or less. With such a pH, chlorite in the aqueous chlorite solution can be stabilized and can be stably stored for a long period of time. The pH of the aqueous chlorite solution can be adjusted with an alkaline agent. Examples of the alkali agent include sodium hydroxide (NaOH) and potassium hydroxide (KOH).

  The chlorite concentration of the aqueous chlorite solution is preferably from 0.01% by mass to 25% by mass, and more preferably from 0.1% by mass to 15% by mass.

The activator activates chlorite in the solution when mixed with the aqueous chlorite solution to generate chlorine dioxide gas. Examples of the activator include an inorganic acid or an organic acid, or a salt thereof. Examples of the inorganic acid include hydrochloric acid (HCl), carbonic acid (H ₂ CO ₃ ), sulfuric acid (H ₂ SO ₄ ), phosphoric acid (H ₃ PO ₄ ), and boric acid (H ₃ BO ₃ ). . Examples of the inorganic acid salt include sodium hydrogen carbonate (NaHCO ₃ ), sodium dihydrogen phosphate (NaH ₂ PO ₄ ), and disodium hydrogen phosphate (Na ₂ HPO ₄ ). As the inorganic acid and its salt, an anhydride (for example, sulfuric anhydride, pyrophosphoric acid, or the like) can be used, and for example, sodium dihydrogen pyrophosphate or the like can be suitably used.

Examples of the organic acid include acetic acid (CH ₃ COOH), citric acid (H ₃ (C ₃ H ₅ O (COO) ₃ )), and malic acid (COOH (CHOH) CH ₂ COOH). Examples of the salt of the organic acid include sodium acetate (CH ₃ COONa), disodium citrate (Na ₂ H (C ₃ H ₅ O (COO) ₃ )), and trisodium citrate (Na ₃ (C ₃ H ₅ O). (COO) ₃ )), disodium malate (COONa (CHOH) CH ₂ COONa) and the like.

  The activator, when mixed with the aqueous chlorite solution, quickly adjusts the pH of the aqueous chlorite solution. More specifically, the activator quickly lowers the pH of the aqueous chlorite solution to an acidic atmosphere. In this sense, the activator can be referred to as “a pH adjuster that shows acidity quickly”. It is preferable that the pH of the aqueous chlorite solution is 2.5 or more and 6.8 or less. The activator preferably adjusts the pH of the aqueous chlorite solution to 3.5 or more and 6.5 or less, more preferably 4.5 or more and 6.0 or less. An example of a preferred activator is sodium metaphosphate having a 1% aqueous solution having a pH of 1.7 or more and 2.4 or less.

For example, when the chlorite contained in the aqueous chlorite solution is sodium chlorite, the pH of the aqueous solution is adjusted as described above to obtain an acidic atmosphere. Generate.
NaClO ₂ + H ⁺ → Na ⁺ + HClO ₂ ··· (1)
On the other hand, the equilibrium reaction when chlorine dioxide gas is dissolved in water is represented by the following equation (2).
_{2ClO 2 + H 2 O ⇔ HClO} 2 + HClO 3 ·· (2)
At this time, the following equation (3) is established.
[HClO ₂ ] [HClO ₃ ] / [ClO ₂ ] = 1.2 × 10 ⁻⁷ (3)

  By mixing the aqueous chlorite solution and the activator to make the aqueous chlorite solution an acidic atmosphere and generating chlorite according to the formula (1), the formula (2) is obtained according to the axiom of the formula (3). In (2), the equilibrium reaction proceeds to the left, so that chlorine dioxide gas can be generated in the aqueous solution with an overwhelming probability.

  In the method for generating chlorine dioxide gas of the present embodiment, apart from an activator for adjusting the pH of the aqueous chlorite solution quickly (herein, this is referred to as a “first activator”). Alternatively, a second activator that adjusts the pH of the aqueous chlorite solution slowly may be combined and mixed. In this sense, the second activator can be said to be a "slowly acidic pH adjuster". The second activator may be an inorganic or organic acid having a lower acidity than the first activator, or a salt thereof. An example of a preferred second activator is sodium pyrophosphate having a 1% aqueous solution having a pH of 3.8 or more and 4.5 or less.

The metal iodide, when mixed with the aqueous chlorite solution, produces iodide ions in the solution and acts as a catalyst. The metal iodide promotes generation of chlorine dioxide gas at the initial stage of mixing the aqueous chlorite solution and the activator. Examples of the metal iodide include an alkali metal iodide and an alkaline earth metal iodide. Specific examples include sodium iodide (NaI), potassium iodide (KI), magnesium iodide (MgI ₂ ), and calcium iodide (CaI ₂ ). Among them, potassium iodide can be suitably used.

  The amount of the metal iodide added to the aqueous chlorite solution is 0.4 mass% or less per 1 L of the 1 mass% aqueous chlorite solution (that is, per 10,000 ppm of chlorite). The lower limit of the amount of metal iodide added is not particularly limited, but is set to such an extent that the effect of promoting the generation of chlorine dioxide gas at the initial stage of mixing can be obtained (* zero is not included). The addition amount of the metal iodide is preferably 0.01% by mass or more and 0.4% by mass or less per 1 L of the 1% by mass aqueous chlorite solution. A more preferable addition amount of the metal iodide per 1 L of the 1 mass% aqueous chlorite solution is 0.1 mass% or more and 0.25 mass% or less.

The activation inhibitor slowly reduces the action of the activating agent when mixed with the chlorite aqueous solution together with the activating agent. The activation inhibitor slowly reduces the action of the activator to quickly lower the pH of the aqueous chlorite solution. The activation inhibitor itself may be one that slowly increases the pH of the aqueous chlorite solution. In this sense, the activation inhibitor can be referred to as “a pH adjuster that shows alkalinity slowly”. Examples of the activation inhibitor include an alkali metal silicate or an alkaline earth metal silicate. Examples of the alkali metal silicate include lithium silicate (mLi ₂ O · nSiO ₂ ), sodium silicate (mNa ₂ O · nSiO ₂ ), and potassium silicate (mK ₂ O · nSiO ₂ ). . The silicic acid alkaline earth metal salts, such as magnesium silicate (mMgO · nSiO _2), calcium silicate (mCaO · nSiO _2), or the like strontium silicate (mSrO · nSiO ₂₎ are exemplified. Among them, sodium silicate (particularly, sodium metasilicate) can be suitably used. The “alkali metal silicate” and “alkaline earth metal silicate” include hydrates.

  The molar ratio between the oxide of the alkali metal or the alkaline earth metal silicate and the silicon dioxide (the above n / m) is not particularly limited, but is preferably 0.9 or more and 1.2 or less. .

For example, when the activation inhibitor is sodium metasilicate, the sodium metasilicate dissociates (hydrolyzes) in an aqueous solution as in the following formula (4).
Na ₂ O · SiO ₂ + 2H ₂ O → 2NaOH + H ₂ SiO ₃ (4)
In this way, the sodium hydroxide (NaOH) generated a little after mixing with the aqueous chlorite solution partially neutralizes the fast-acting activator (acid in this example). , The action of the activator is reduced effectively. As a result, a rapid increase in the concentration of chlorine dioxide gas in the initial stage after mixing is suppressed, and the chlorine dioxide gas can be gradually released from the initial stage.

On the other hand, as shown in the formula (4), metasilicic acid (H ₂ SiO ₃ ) is also generated separately from sodium hydroxide. Metasilicic acid is formed after a short time after being mixed with an aqueous chlorite solution, and acts as an acid. In this sense, silicon dioxide (SiO ₂ ), which is a source of metasilicic acid, is “slowly effective”. PH adjuster showing acidity. " The sodium hydroxide and metasilicic acid generated with a delay further react as shown in the following formula (5).
_{2NaOH + H 2 SiO 3 → Na} 2 O · SiO 2 + 2H 2 O ·· (5)

Thus, sodium metasilicate as an activation inhibitor undergoes a transformation between a state of dissociation into sodium hydroxide and metasilicic acid in an aqueous solution and a state of recombination (see FIG. 1). Then, the pH of the aqueous chlorite solution is slowly adjusted while dissociated into sodium hydroxide and metasilicic acid. That is, while dissociated into sodium hydroxide and metasilicic acid, metasilicic acid acts as a source of hydrogen ions (H ⁺ ) and sodium hydroxide acts as a source of hydroxide ions (OH ⁻ ). Thus, the pH of the aqueous chlorite solution is adjusted slowly. As a result, the chlorine dioxide gas can be generated slowly, and the chlorine dioxide gas can be generated at a stable concentration for a long time. Further, chlorine dioxide gas can be generated immediately and at a stable concentration by using the metal iodide in combination.

  Here, “generated at a stable concentration” means that in a closed system, the concentration of generated chlorine dioxide gas slowly rises without a peak at an initial stage after mixing and becomes constant (see FIG. 2). ) Or means that the ratio of the peak concentration to the final concentration can be kept sufficiently low even if it has a peak. In the latter case, the ratio of the peak concentration to the final concentration is preferably, for example, 1.3 or less, more preferably 1.2 or less, and even more preferably 1.1 or less. Also, "promptly generated at a stable concentration" means that after mixing the aqueous chlorite solution and the activator, the concentration of the generated chlorine dioxide gas sharply increases and has no remarkable peak. Converges to the final concentration.

  In FIG. 2, the solid line shows the concentration change of chlorine dioxide gas when a metal iodide and an activation inhibitor are mixed together with an activator in an aqueous chlorite solution in a closed system. Also, for comparison, the concentration change when only the activator is mixed without mixing the metal iodide and the activation inhibitor is indicated by a dashed line, and the activator and the activity without the metal iodide are mixed. The change in concentration when only the chemical inhibitor is mixed is indicated by a broken line.

  Further, according to the method of the present embodiment, the concentration of the generated chlorine dioxide gas can be freely controlled. Conventionally, the concentration of generated chlorine dioxide gas depends on the concentration of chlorite, and it was not possible to control the maximum concentration.However, in this method, by adjusting the amount of the activation inhibitor added, The maximum concentration (preferably the final concentration) of chlorine gas can be freely controlled. Therefore, it is possible to easily generate chlorine dioxide gas having a concentration corresponding to the purpose of use.

  The amount of the activation inhibitor added to the aqueous chlorite solution is 1% by mass or less per 1 L of the aqueous chlorite solution of 1% by mass (that is, per 10,000 ppm of chlorite). The lower limit of the amount of the activation inhibitor to be added is not particularly limited, but is set to such an extent that a stable gas generation effect of chlorine dioxide gas can be obtained (* excluding zero). The addition amount of the activation inhibitor is preferably 0.03% by mass or more and 0.3% by mass or less per 1L of 1% by mass of the aqueous chlorite solution. A more preferable addition amount of the activation inhibitor per 1 L of 1% by mass of the aqueous chlorite solution is 0.1% by mass or more and 0.25% by mass or less.

  The ratio of the added amounts of the metal iodide and the activation inhibitor is not particularly limited, but may be metal iodide: activation inhibitor = 3: 1 to 1: 3. The ratio of the added amount of the metal iodide and the activation inhibitor is preferably 2: 1 to 1: 2, more preferably 1.5: 1 to 1: 1.5, and 1.25. : 1-1: 1.25.

  The water-absorbing resin absorbs moisture to form a gel composition. Examples of the water-absorbing resin include a starch-based water-absorbing resin, a cellulose-based water-absorbing resin, and a synthetic polymer-based water-absorbing resin. Examples of the starch-based water-absorbing resin include a starch-acrylonitrile graft copolymer and a starch-acrylic acid graft copolymer. Examples of the cellulose-based water-absorbing resin include a cellulose-acrylonitrile graft copolymer or cross-linked carboxymethyl cellulose. Examples of the synthetic polymer water-absorbing resin include a polyvinyl alcohol-based water-absorbing resin and an acrylic water-absorbing resin.

  The activator, metal iodide, activation inhibitor, and water-absorbing resin may be in a solid (eg, powdered or granular) before mixing with the aqueous chlorite solution. Further, the activator, the metal iodide, and the activation inhibitor may be soluble when mixed with the aqueous chlorite solution.

  The method for generating chlorine dioxide gas of the present embodiment can be executed using a chlorine dioxide gas generation kit K shown in FIG. The chlorine dioxide gas generation kit K comprises a first drug 1 containing an aqueous chlorite solution, a metal iodide, and a slow-acting activation inhibitor, and a second drug 2 containing a fast-acting activator and a water-absorbing resin. And In the chlorine dioxide gas generation kit K, the first drug 1 and the second drug 2 are respectively sealed in hermetic containers. In the present embodiment, the first chemical 1 composed of a liquid (a chlorite aqueous solution in which a metal iodide and an activation inhibitor are dissolved) is contained in a first container 10 mainly composed of a plastic container main body 11. Have been. The first container 10 has a sealing lid 12, and when the sealing lid 12 is mounted in a liquid-tight manner on the container body 11, the first medicine 1 is sealed in the hermetic first container 10. I have.

  Further, the second drug 2 (activator and water-absorbent resin) composed of a solid is contained in a second container 20 formed by laminating a plastic film. The second container 20 may be one in which two plastic films are overlapped and the entire peripheral portion thereof is welded, or one plastic film may be folded in half and then the peripheral portion other than the folded portion may be formed. It may be welded. Thus, the second medicine 2 is sealed in the hermetically sealed second container 20 different from the first container 10.

  The material and shape of the first container 10 and the second container 20 are not limited as long as they are airtight containers. The first container 10 and the second container 20 are not limited to being made of plastic, and may be made of, for example, metal. In addition, the first container 10 is not limited to the one having a fixed shape, and may be a flexible one. The second container 20 is not limited to the one having a flexible one and has a fixed shape. It may be. Further, the first medicine 1 and the second medicine 2 may be accommodated in an integrated container having two accommodation chambers, and may be configured to be mixed by communicating the two accommodation chambers during use.

  In the chlorine dioxide gas generation kit K of the present embodiment, the first drug 1 flows in the form of an aqueous chlorite solution, and therefore, is excellent in storage safety. For example, storage safety is higher than in a case where a chlorite aqueous solution in which chlorine dioxide gas is dissolved is distributed while keeping the pH acidic.

  In order to actually generate chlorine dioxide gas using the chlorine dioxide gas generation kit K of the present embodiment, the following may be performed. That is, as shown in FIG. 4, in the first container 10 containing the first medicine 1, the sealing lid 12 is removed from the container main body 11. In the second container 20 containing the second medicine 2, the plastic film is cut and opened. Then, the first medicine 1 and the second medicine 2 are mixed by mixing the second medicine 2 in the second container 20 into the first container 10 (container main body 11). Thus, in the first container 10 (container main body 11), the chlorite aqueous solution in which the metal iodide and the slow-acting activation inhibitor are dissolved, the fast-acting activator, and the water-absorbing resin are mixed. . That is, in the first container 10 (container main body 11), as a whole, a chlorite aqueous solution, a fast-acting activator, a metal iodide, a slow-acting activation inhibitor, and a water-absorbing resin Mix.

  Then, the contents are gelled in the first container 10 (container main body 11), and chlorine dioxide gas is generated from the obtained gel composition 3 (see FIG. 5) immediately and at a stable concentration. If an open lid 14 having a plurality of openings 15 is attached to the container main body 11, the generated chlorine dioxide gas passes through the openings 15 and is discharged into the room. Therefore, the strong oxidizing power of chlorine dioxide gas released immediately can provide a bactericidal effect and a deodorant effect at the time of use, and the chlorine dioxide gas released at a stable concentration for a long period of time. It is possible to stably provide a bactericidal effect, a deodorizing effect, and the like throughout.

  In the above description, the second drug 2 does not include a water-absorbing resin, and may be mixed with only a chlorite aqueous solution, a fast-acting activator, a metal iodide and a slow-acting activation inhibitor, In this case, chlorine dioxide gas can be immediately and stably generated from the obtained liquid composition at a stable concentration. Even in this case, the strong oxidizing power of chlorine dioxide gas, which is released immediately and stably at a stable concentration, provides a bactericidal effect and a deodorant effect quickly and stably for a long time when used. Can be brought.

[Second embodiment]
A method for generating chlorine dioxide gas, a liquid composition, a gel composition, and a chlorine dioxide gas generation kit according to a second embodiment will be described. In the present embodiment, a chlorite aqueous solution, a fast-acting activator, a metal iodide, a slow-acting activation inhibitor, for the first drug 1 and the second drug 2 of the chlorine dioxide gas generation kit K, and The allocation of the water absorbent resin is different from that of the first embodiment. Further, the specific configuration of the container of the chlorine dioxide gas generation kit K is different from that of the first embodiment. Hereinafter, the chlorine dioxide gas generation kit K of the present embodiment will be described mainly with respect to differences from the first embodiment. Note that points that are not particularly described are the same as those in the first embodiment, and are denoted by the same reference numerals, and detailed description is omitted.

  The chlorine dioxide gas generation kit K of the present embodiment includes the first drug 1 containing an aqueous chlorite solution, a fast-acting activator, a metal iodide, a slow-acting activation inhibitor, and a water-absorbing resin. A second medicine 2. These are enclosed in a common hermetic container 30, as shown in FIG. The container 30 is configured using a gas permeable film. The container 30 may be one in which two gas-permeable films are overlapped and the entire peripheral portion thereof is welded, or one gas-permeable film may be folded in half and then the peripheral portion other than the folded portion may be formed. The parts may be welded.

  The interior of the container 30 is separated into two spaces of a first storage room 32 and a second storage room 33 by a separation part 31 which can be released by a manual operation. As shown in FIG. 7, in the present embodiment, the isolation unit 31 is configured by a labyrinth structure unit in which the gas permeable film forming the container 30 is folded back multiple times. The inner surface of the gas permeable film in the labyrinth structure portion having the labyrinth may be easily peelably adhered by, for example, an easy peel seal or the like. The separating portion 31 (labyrinth structure portion) is held by a holding member 35 made of, for example, a clip. When the holding member 35 holds the separating portion 31 of the container 30, the separating portion 31 is pressed from the outside to maintain a state where the first storage chamber 32 and the second storage chamber 33 are isolated from each other. Therefore, the first drug 1 and the second drug 2 can be stably stored for a long time before use.

  In order to actually generate chlorine dioxide gas using the chlorine dioxide gas generation kit K of the present embodiment, the following may be performed. That is, as shown in FIG. 8, first, the holding member 35 holding the separating portion 31 is removed from the container 30 by manual operation. Thereafter, the labyrinth structure of the isolation portion 31 is released by extending the folded portion. Then, an external force is applied from the outside of the container 30, and the first medicine 1 stored in the first storage chamber 32 and the second medicine 2 stored in the second storage chamber 33 are mixed inside the container 30. I do. Then, the contents are gelled in the container 30, and chlorine dioxide gas is immediately and stably generated from the obtained gel composition 3 (see FIG. 9) at a stable concentration. Since the container 30 is formed of a gas permeable film, the generated chlorine dioxide gas permeates the container 30 and is released into the room. Therefore, due to the strong oxidizing power of chlorine dioxide gas, which is released immediately and stably at a stable concentration, the sterilizing effect and the deodorizing effect can be brought about quickly at the time of use, and stably for a long period of time. .

  In the above description, the second drug 2 does not include a water-absorbing resin, and may be mixed with only a chlorite aqueous solution, a fast-acting activator, a metal iodide and a slow-acting activation inhibitor, In this case, chlorine dioxide gas can be immediately and stably generated from the obtained liquid composition at a stable concentration. Even in this case, the strong oxidizing power of chlorine dioxide gas, which is released immediately and stably at a stable concentration, provides a bactericidal effect and a deodorant effect quickly and stably for a long time when used. Can be brought.

[Third embodiment]
A third embodiment of a method for generating chlorine dioxide gas, a liquid composition, a gel composition, and a chlorine dioxide gas generation kit will be described. In the present embodiment, a chlorite aqueous solution, a fast-acting activator, a metal iodide, a slow-acting activation inhibitor, for the first drug 1 and the second drug 2 of the chlorine dioxide gas generation kit K, and The allocation of the water-absorbent resin is different from the first and second embodiments. Further, the specific configuration of the container of the chlorine dioxide gas generation kit K is different from the first embodiment and the second embodiment. Hereinafter, the chlorine dioxide gas generation kit K of the present embodiment will be described mainly with respect to differences from the first embodiment. Note that points that are not particularly described are the same as in the first embodiment, and are denoted by the same reference numerals and detailed description thereof will be omitted.

  The chlorine dioxide gas generation kit K of the present embodiment includes the first drug 1 containing an aqueous chlorite solution and metal iodide, a fast-acting activator, a slow-acting activation inhibitor, and a water-absorbing resin. A second medicine 2. As shown in FIG. 10, the first drug 1 is sealed in the first container 10, and the second drug 2 is sealed in the second container 20 together with the first container 10.

  The first container 10 is configured by bonding a plastic film, for example. The first container 10 may be one in which two plastic films are overlapped and the entire peripheral portion thereof is easily peel-sealed, or one plastic film may be folded in half and then the peripheral portion other than the folded portion may be used. May be an easy peel seal. Thus, the first medicine 1 is sealed in the hermetically sealable and easily breakable first container 10.

  The second container 20 is configured using a gas permeable film. The second container 20 may be one in which two gas permeable films are overlapped and the entire peripheral portion thereof is welded, or one gas permeable film may be folded in half and then the other than the folded portion May be welded to the periphery. Thus, the second medicine 2 is enclosed in the hermetically sealed and gas-permeable second container 20 together with the first container 10.

  In order to actually generate chlorine dioxide gas using the chlorine dioxide gas generation kit K of the present embodiment, the following may be performed. That is, an external force is applied to the region where the first container 10 exists from the outside of the second container 20 to break the first container 10 inside the second container 20. For example, the easy peel portion in the first container 10 is peeled off by external pressure, and the first agent 1 (a chlorite aqueous solution in which metal iodide is dissolved) composed of a liquid is released from the first container 10. Then, from the gel composition obtained by mixing the first drug 1 and the second drug 2, chlorine dioxide gas is immediately generated at a stable concentration. Since the second container 20 is formed of a gas permeable film, the generated chlorine dioxide gas permeates through the second container 20 and is discharged into the room. Therefore, due to the strong oxidizing power of chlorine dioxide gas, which is released immediately and stably at a stable concentration, the sterilizing effect and the deodorizing effect can be brought about quickly at the time of use, and stably for a long period of time. .

  In the above description, the second drug 2 does not include a water-absorbing resin, and may be mixed with only a chlorite aqueous solution, a fast-acting activator, a metal iodide and a slow-acting activation inhibitor, In this case, chlorine dioxide gas can be immediately and stably generated from the obtained liquid composition at a stable concentration. Even in this case, the strong oxidizing power of chlorine dioxide gas, which is released immediately and stably at a stable concentration, provides a bactericidal effect and a deodorant effect quickly and stably for a long time when used. Can be brought.

  Hereinafter, the present invention will be described more specifically with reference to Examples.

[Example 1]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 4000 ppm aqueous solution of sodium chlorite. To this aqueous solution of sodium chlorite, 1.71 g of 7.3% hydrochloric acid as an activator, 0.15 g of potassium iodide, and 0.11 g of sodium silicate pentahydrate as an activation inhibitor were mixed. . The mass% of potassium iodide and sodium silicate pentahydrate in the mixed solution was 0.37%, respectively, when converted to 1 L of 1 mass% chlorite aqueous solution (that is, per 10,000 ppm of chlorite). 0.27%. Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Example 2]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 4000 ppm aqueous solution of sodium chlorite. 1.71 g of 7.3% hydrochloric acid, 0.08 g of potassium iodide, and 0.2 g of sodium silicate pentahydrate as an activation inhibitor were mixed with the aqueous sodium chlorite solution. . The mass% of potassium iodide and sodium silicate pentahydrate in the mixed solution is 0.2% each when converted to 1 L of 1 mass% chlorite aqueous solution (that is, per 10,000 ppm of chlorite). 0.5%. Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Example 3]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 4000 ppm aqueous solution of sodium chlorite. 2 g of phosphoric acid as an activating agent, 0.1 g of potassium iodide, and 0.11 g of sodium silicate pentahydrate as an activation inhibitor were mixed with the aqueous sodium chlorite solution. The mass% of potassium iodide and sodium silicate pentahydrate in the mixed solution was 0.25% when converted to 1 L of 1 mass% chlorite aqueous solution (that is, per 10,000 ppm of chlorite). 0.27%. Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Example 4]
Sodium chlorite was dissolved in pure water to prepare 100 g of an 11250 ppm aqueous solution of sodium chlorite. To this aqueous solution of sodium chlorite, 1.16 g of phosphoric acid as an activator, 0.1 g of potassium iodide, and 0.05 g of sodium silicate pentahydrate as an activation inhibitor were mixed. The mass% of potassium iodide and sodium silicate pentahydrate in the mixed solution was 0.09% when converted to 1% by mass of 1 mass% aqueous chlorite solution (that is, per 10,000 ppm of chlorite). 0.04%. Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Example 5]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 120,000 ppm aqueous solution of sodium chlorite. 6.3 g of phosphoric acid as an activator, 0.1 g of potassium iodide, and 1.19 g of sodium silicate pentahydrate as an activation inhibitor were mixed with the aqueous sodium chlorite solution. The mass% of potassium iodide and sodium silicate pentahydrate in the mixed solution was 0.01% each when converted to 1 L of a 1 mass% aqueous chlorite solution (that is, per 10,000 ppm of chlorite). 0.1%. Thereafter, the mixture was stored in a non-sealed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in an open system.

[Example 6]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 120,000 ppm aqueous solution of sodium chlorite. 6.3 g of phosphoric acid as an activator, 0.25 g of potassium iodide, and 1.19 g of sodium silicate pentahydrate as an activation inhibitor were mixed with the aqueous sodium chlorite solution. The mass% of potassium iodide and sodium silicate pentahydrate in the mixed solution was 0.02% when converted to 1 L of 1 mass% aqueous chlorite solution (that is, per 10,000 ppm of chlorite), 0.1%. Thereafter, the mixture was stored in a non-sealed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in an open system.

[Example 7]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 120,000 ppm aqueous solution of sodium chlorite. 6.3 g of phosphoric acid as an activator, 0.5 g of potassium iodide, and 1.19 g of sodium silicate pentahydrate as an activation inhibitor were mixed with the aqueous sodium chlorite solution. The mass% of potassium iodide and sodium silicate pentahydrate in the mixed solution was 0.04% when converted to 1 L of 1 mass% chlorite aqueous solution (that is, per 10,000 ppm of chlorite). 0.1%. Thereafter, the mixture was stored in a non-sealed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in an open system.

Example 8
Sodium chlorite was dissolved in pure water to prepare 100 g of a 120,000 ppm aqueous solution of sodium chlorite. 6.3 g of phosphoric acid as an activator, 1 g of potassium iodide, and 1.19 g of sodium silicate pentahydrate as an activation inhibitor were mixed with the aqueous sodium chlorite solution. The mass% of potassium iodide and sodium silicate pentahydrate in the mixed solution was 0.08% when converted to 1 L of 1 mass% chlorite aqueous solution (that is, per 10,000 ppm of chlorite). 0.1%. Thereafter, the mixture was stored in a non-sealed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in an open system.

[Comparative Example 1]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 4000 ppm aqueous solution of sodium chlorite. To this aqueous sodium chlorite solution, 1.71 g of 7.3% hydrochloric acid as an activator and 0.11 g of sodium silicate pentahydrate as an activation inhibitor were mixed. The mass% of sodium silicate pentahydrate in the mixed solution was 0.27% when converted to 1 L of a 1 mass% aqueous chlorite solution (that is, per 10,000 ppm of chlorite). Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Comparative Example 2]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 4000 ppm aqueous solution of sodium chlorite. To this aqueous solution of sodium chlorite, 1.71 g of 7.3% hydrochloric acid as an activator and 0.15 g of potassium iodide were mixed. The mass% of potassium iodide in the mixed solution was 0.37% when converted to 1 L of a 1 mass% chlorite aqueous solution (that is, per 10,000 ppm of chlorite). Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Comparative Example 3]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 4000 ppm aqueous solution of sodium chlorite. To this aqueous sodium chlorite solution, 2 g of phosphoric acid as an activator and 0.11 g of sodium silicate pentahydrate as an activation inhibitor were mixed. The mass% of sodium silicate pentahydrate in the mixed solution was 0.27% when converted to 1 L of a 1 mass% aqueous chlorite solution (that is, per 10,000 ppm of chlorite). Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Comparative Example 4]
Sodium chlorite was dissolved in pure water to prepare 100 g of a 4000 ppm aqueous solution of sodium chlorite. 2 g of phosphoric acid as an activator and 0.1 g of potassium iodide were mixed with the aqueous sodium chlorite solution. The mass% of potassium iodide in the mixture was 0.25% in terms of 1 L of a 1 mass% chlorite aqueous solution (that is, per 10,000 ppm of chlorite). Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Comparative Example 5]
Sodium chlorite was dissolved in pure water to prepare 100 g of an 11250 ppm aqueous solution of sodium chlorite. To this aqueous sodium chlorite solution, 1.16 g of phosphoric acid as an activator and 0.05 g of sodium silicate pentahydrate as an activation inhibitor were mixed. The mass% of sodium silicate pentahydrate in the mixture was 0.04% when converted to 1 L of a 1 mass% aqueous chlorite solution (that is, per 10,000 ppm of chlorite). Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Comparative Example 6]
Sodium chlorite was dissolved in pure water to prepare 100 g of an 11250 ppm aqueous solution of sodium chlorite. To this aqueous solution of sodium chlorite, 1.16 g of phosphoric acid as an activator and 0.1 g of potassium iodide were mixed. The mass% of potassium iodide in the mixture was 0.09% when converted to 1 L of a 1 mass% aqueous chlorite solution (that is, per 10,000 ppm of chlorite). Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

[Comparative Example 7]
Sodium chlorite was dissolved in pure water to prepare 100 g of an 11250 ppm aqueous solution of sodium chlorite. To this aqueous sodium chlorite solution, 3.01 g of 7.3% hydrochloric acid as an activator, 0.5 g of potassium iodide, and 2 g of sodium silicate pentahydrate as an activation inhibitor were mixed. The mass% of potassium iodide and sodium silicate pentahydrate in the mixed solution is 0.44% each when converted to 1 L of 1 mass% aqueous chlorite solution (that is, per 10,000 ppm of chlorite). 1.78%. Thereafter, the mixture was stored in a tightly closed state at room temperature, and the pH of the mixture and the concentration of generated chlorine dioxide gas were measured in a closed system.

  The measurement results were as follows.

  In Comparative Example 1 in which potassium iodide was not mixed, the generation of chlorine dioxide gas in the initial stage (particularly within 30 minutes) after mixing was slow, and in Comparative Example 2 in which sodium silicate pentahydrate was not mixed, After a long time (especially after 7 days), the concentration of chlorine dioxide gas was unstable. In contrast, in Examples 1 and 2 in which both potassium iodide and sodium silicate pentahydrate were mixed, chlorine dioxide gas was released at a stable concentration from the initial stage after mixing for a long period of time. Was confirmed.

  In Comparative Example 3 in which potassium iodide was not mixed, generation of chlorine dioxide gas was slow, and in Comparative Example 4 in which sodium silicate pentahydrate was not mixed, chlorine dioxide gas after a long period of time (particularly after 7 days) was used. Gas concentration was unstable. On the other hand, in Example 3 in which both potassium iodide and sodium silicate pentahydrate were mixed, a weak acid was used as an activator, but the initial stage after mixing (generally within 10 minutes) started quickly. It was confirmed that chlorine dioxide gas was released. In addition, it was confirmed that chlorine dioxide gas was released at a stable concentration for a long time thereafter.

  In Comparative Example 5 in which potassium iodide was not mixed, the generation of chlorine dioxide gas was slow, and in Comparative Example 6 in which sodium silicate pentahydrate was not mixed, after the elapse of a predetermined time (after the elapse of 24 hours). The concentration of chlorine dioxide gas was unstable. On the other hand, in Example 4, in which both potassium iodide and sodium silicate pentahydrate were mixed, the weak acid was used as the activator, but the initial stage after mixing (within 1 minute) was rapid. It was confirmed that chlorine dioxide gas was released. In addition, it was confirmed that chlorine dioxide gas was released at a stable concentration for a long time thereafter.

  Further, even in the case where both potassium iodide and sodium silicate pentahydrate were mixed, in Comparative Example 7 in which the added amount was excessive, generation of chlorine dioxide gas itself was not confirmed. In contrast, referring to Examples 1-4, the weight percent of potassium iodide and sodium silicate pentahydrate per liter of 1% by weight aqueous chlorite solution (ie, per 10,000 ppm of chlorite) It was found that chlorine dioxide gas was released quickly and at a stable concentration when the content was 0.4% or less and 1% or less, respectively.

  From Examples 5 to 8, it was confirmed that even in an open system, chlorine dioxide gas was released quickly and at a stable concentration.

  The embodiments (including examples) of the method for generating chlorine dioxide gas, the liquid composition, the gel composition, and the kit for generating chlorine dioxide gas K have been described in detail with specific examples. The scope is not limited to the specific examples and embodiments described above. The examples and embodiments disclosed in the present specification are exemplifications in all respects, and can be appropriately modified without departing from the spirit of the present invention.

  For example, the first drug 1 includes an aqueous chlorite solution and a slow-acting activation inhibitor, and the second drug 2 includes a fast-acting activator, a metal iodide, and a water-absorbing resin. Is also good.

DESCRIPTION OF SYMBOLS 1 1st medicine 2 2nd medicine 3 Gel composition 10 1st container 20 2nd container 30 container (common sealing container)
35 Isolation unit K Chlorine dioxide gas generation kit

Claims (17)

  A chlorite aqueous solution, an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas, and an activation inhibitor that reduces the action of the activator slowly. And a metal iodide are obtained by mixing the metal iodide at a ratio of 0.4% by mass or less and the activation inhibitor at a ratio of 1% by mass or less per 1 L of the 1% by mass aqueous chlorite solution. A method for generating chlorine dioxide gas from a liquid composition, which generates chlorine dioxide gas immediately and at a stable concentration.   A chlorite aqueous solution, an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas, and an activation inhibitor that reduces the action of the activator slowly. A mixture of a metal iodide and a water-absorbing resin in a ratio of 0.4% by mass or less of the metal iodide and 1% by mass or less of the activation inhibitor per 1 L of the 1% by mass aqueous chlorite solution. And generating chlorine dioxide gas from the obtained gel composition in a prompt and stable concentration.   A chlorite aqueous solution, an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas, and an activation inhibitor that reduces the action of the activator slowly. A metal iodide in an amount of 0.4% by mass or less of the metal iodide and 1% by mass or less of the activation inhibitor per 1 L of the aqueous chlorite solution of 1% by mass, and chlorine dioxide gas. A liquid composition generated quickly and at a stable concentration.   A chlorite aqueous solution, an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas, and an activation inhibitor that reduces the action of the activator slowly. Containing 1% by mass or less of the metal iodide and 1% by mass or less of the activation inhibitor per 1 L of 1% by mass of the aqueous chlorite solution containing 1% by mass of the metal iodide and the water-absorbing resin. , A gel composition that generates chlorine dioxide gas immediately and at a stable concentration. A first agent comprising an aqueous chlorite solution,
A second agent containing an activator that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas,
An activation inhibitor that reduces the action of the activator in a delayed manner, and a metal iodide, respectively, are included in any of the first drug and the second drug,
Per 1 L of the aqueous chlorite solution of 1% by mass, the metal iodide is 0.4% by mass or less, and the activation inhibitor is 1% by mass or less;
A chlorine dioxide gas generation kit for generating chlorine dioxide gas from a liquid composition obtained by mixing the first drug and the second drug, in an immediate and stable concentration. A first agent comprising an aqueous chlorite solution,
A second agent comprising an activator and a water-absorbing resin that quickly adjusts the pH of the chlorite aqueous solution to generate chlorine dioxide gas,
An activation inhibitor that reduces the action of the activator in a delayed manner, and a metal iodide, respectively, are included in any of the first drug and the second drug,
Per 1 L of the aqueous chlorite solution of 1% by mass, the metal iodide is 0.4% by mass or less, and the activation inhibitor is 1% by mass or less;
A chlorine dioxide gas generation kit for generating chlorine dioxide gas from a gel composition obtained by mixing the first drug and the second drug, in an immediate and stable concentration.   The chlorine dioxide gas generation kit according to claim 5 or 6, wherein the activation inhibitor is present in an amount of 0.03% by mass or more and 0.3% by mass or less per 1L of 1% by mass of the aqueous chlorite solution.   The chlorine dioxide gas generation kit according to any one of claims 5 to 7, wherein the metal iodide is present in an amount of 0.01% by mass or more and 0.4% by mass or less per 1L of the 1% by mass aqueous chlorite solution. .   The chlorine dioxide gas generation kit according to any one of claims 5 to 8, wherein a mass ratio of the activation inhibitor to the metal iodide is 3: 1 to 1: 3.   The chlorine dioxide gas generation kit according to any one of claims 5 to 9, wherein the activation inhibitor is an alkali metal silicate or an alkaline earth metal silicate.   The chlorine dioxide gas generation kit according to claim 10, wherein the activation inhibitor is sodium silicate.   The chlorine dioxide gas generation kit according to any one of claims 5 to 11, wherein the metal iodide is potassium iodide.   The chlorine dioxide gas generation kit according to any one of claims 5 to 12, wherein the activator is an inorganic acid or an organic acid, or a salt thereof.   14. The device according to claim 5, wherein the first drug is sealed in a hermetically sealed first container, and the second drug is sealed in a second hermetically sealed container different from the first container. The chlorine dioxide gas generation kit according to claim 1.   14. The method according to claim 5, wherein the first medicine and the second medicine are sealed in a common hermetically sealed container while being isolated from each other by an isolation part which can be released by an artificial operation. Chlorine dioxide gas generation kit.   The chlorine dioxide gas generation kit according to claim 15, wherein the isolation unit is configured by a labyrinth structure unit.   14. The method according to claim 5, wherein the first drug is sealed in a hermetically sealable and easily breakable first container, and the second drug is sealed in a hermetically sealed second container together with the first container. The chlorine dioxide gas generation kit according to claim 1.

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