Nitocote ET402* constructive solutions

Coal tar extended epoxy resin coating

Uses Typical Properties

Provides chemical and abrasion resistance to prevent Colour : Black/Brown

corrosion of concrete surfaces for applications such as : Solids by weight @ 25°C : 100%
Specific gravity : 1.54 at 20°C
„ Seawater tanks, channels and intakes.
Pot life :
„ Manhole linings. at 25°C 75 minutes
at 40°C 40 minutes
„ Sewage works and effluent plants.
Tack free time : 2 to 3 hours at 35°C
„ Chemical processing. Overcoating time : 6 hours at 35°C
3 hours at 45°C
„ Foundation waterproofing.
Full cure : 4 days at 35°C
„ Jetties, piers and docks. Curing Efficiency : 93%
(BS 7542)
Advantages Water Absorption : <0.01%
(ASTM D570)
„ Low cost service life - excellent chemical and abrasion
Impact Resistance : Passed
resistance, does not support bacterial growth.
(BS 3900 Pt E3)
„ Cost saving - primerless system. Bond Strength : Min 1N/mm²
(BS 1881 Pt 207)
„ Added value system - acts as an impermeable waterproof
Water Permeability : Nil @ 2 bar pressure
coating.
(Long Term) over 3 months
„ Versatile usage - can be applied to green concrete by Salt Spray Test : Nil @ 200 microns
brush, roller or spray. (BS 1881 Pt. 124 :1988) tested over 1000 hours

Chemical resistance :
Description
Tests were carried out in accordance with ASTM D543. Test
Nitocote ET402 is based on solvent-free epoxy resins,
was conducted at room temperature of 23°C and specimens
modified with coal tar. It is supplied as a two pack material in
were soaked in the solution for a period of 7 days.
pre-weighed quantities ready for on-site mixing and use.
Acids (m/v)
Nitocote ET402 is applied as a two coat application. It is
Hydrochloric acid 10% : Excellent
generally applied at a wet film thickness of 200 micron per
Sulphuric acid 10% : Very good
coat, but can be applied at greater thicknesses to suit
Nitric acid 10% : Very good
exposure conditions.
Phosphoric acid 10% : Very good

Specification Alkalis (m/v)

The corrosion resistant coating shall be Nitocote ET402, a Ammonia 15% : Excellent
coal tar extended, 100% solids, epoxy resin coating. The Sodium Hydroxide 25% : Good
coating shall possess a high-build capability, to facilitate Solvents & organics
varying application thicknesses. It shall further possess
excellent bond and chemical resistance properties and shall Oils, vegetable and minerals: Excellent
comply to BS 7542 & ASTM C309 curing efficiency standards. Ferric Chloride 15% : Very good

Aqueous solutions
Water : Excellent
Sea water : Excellent
Raw sewage : Very good

Consult the local Fosroc office for specific recommendations

to meet each operating condition.
Nitocote ET402*

Instructions for use Application

Preparation A minimum 2 coat application is generally recommended to

ensure a full, unbroken coating is achieved.
All surfaces to be treated with Nitocote ET402 must be clean
and free from dust or loose material. Brush application

Concrete surfaces Once mixed, the material should be immediately applied,

ensuring that a continuous coating is obtained. The first coat
All laitance must be removed by grit blasting, or other suitable
is applied to achieve a uniform coating with a wet film thickness
removal methods. The general standard of surface preparation
not less than 200 microns, and should be allowed to dry for at
should be in accordance with ACI 503R-89, Chapter 5,
least 6 hours at 35°C before the application of the second
Paragraph 5.4.
coat.
Following the preparation of a concrete surface, care should
The second coat should be applied between 6 hours and 4
be taken to ensure that any surface irregularities are filled with
days (at 35°C) after the application of the first coat, at 45°C
Nitomortar FC*† or Nitomortar FC(B)*†.
this will be reduced to 3 hours. The second coat should be
Metal surfaces applied as above again achieving a wet film thickness not
less than 200 microns.
Any metal surfaces should be grit blasted to a bright finish,
meeting the requirements of Swedish Standard SA 2½ or equal. Spray application

Priming Where large areas are to be coated, it is advisable to consider

spray application. Consult the local Fosroc office for further
Concrete surfaces
details and recommendations.
Priming is not required on properly prepared concrete surfaces
Cleaning
- see Preparation section.
Tools and equipment should be cleaned with Fosroc Solvent
Metal surfaces
102* immediately after use.
All metal surfaces should be coated immediately after
Hot weather working practices
preparation. If this is not possible and to eliminate formation
of rust, prime the metal surfaces using Nitoprime 25*. Whilst the performance properties of Nitocote ET402 at
elevated temperatures are assured, application under such
Mixing
conditions can sometimes be difficult. It is therefore suggested
The contents of the resin can should be thoroughly stirred to that, for temperatures above 35°C, the following guidelines
disperse any possible settlement. are adopted as a prudent working regime:

The entire contents of both the hardener and resin cans should (i) Store unmixed materials in a cool (preferably temperature
be poured into a suitable sized mixing vessel. controlled) environment, avoiding exposure to direct
sunlight.
It is recommended that the two components are mixed together
mechanically using a slow speed electric drill fitted with a (ii) Keep mixing and placing equipment cool, arranging shade
Fosroc Mixing Paddle (MR3). Mixing should be carried out protection if necessary. It is especially important to keep
continuously for 3 to 5 minutes, until a uniform consistency is cool those surfaces of the equipment which will come into
achieved. direct contact with the material itself.

Although Nitocote ET402 is a non-solvented product, it is still (iii) Try to eliminate application in the middle of the day, and
recommended that mixing should take place in an open, well certainly avoid application in direct sunlight.
ventilated area.
(iv) For hand application, ensure that there are sufficient
operatives available to complete application within the pot
life of the material.

(v) Have a ready supply of Fosroc Solvent 102 available for

immediate cleaning of tools after use.

constructive solutions page 2

Nitocote ET402*

Repairing and overcoating Storage

Any applications of Nitocote ET402 which have become Nitocote ET402 has a shelf life of 12 months, when stored in
damaged can be readily overcoated. warehouse conditions below 35°C.

The existing surface should well abraded, using a stiff wire

Precautions
brush, or similar, to ensure that a good mechanical bond will
be achieved between the two layers. Health and safety

Overcoating works can then proceed as for new work, always Nitocote ET402, Nitoprime 25 and Fosroc Solvent 102 should
ensuring that the prepared substrate is free from any moisture. not come in contact with skin or eyes, nor should they be
swallowed. Avoid inhalation of vapours and ensure adequate
Limitations ventilation.

- Nitocote ET402 should not be applied over other existing Some people are sensitive to resins, hardeners and solvents.
coatings, but can be applied on top of itself (see above). Wear suitable protective clothing, gloves and eye/face
protection. Barrier creams such as Kerodex Antisolvent or
- For cold weather working (down to 5°C), it is recommended
Rozalex Antipaint provide additional skin protection.
that materials are stored in a heated building and only
removed immediately before use. Accelerated heating Should accidental skin contact occur, remove immediately with
methods are not to be utilised under any circumstances. a resin removing cream such as Kerocleanse Standard Grade
Skin Cleanser or Rozaklens Industrial Skin Cleanser, followed
- In contact with moisture/high humidity during cure, the colour
by washing with soap and water - do not use solvent.
of the coatings will change to brown/red.
In case of contact with eyes, rinse immediately with plenty of
Technical support water and seek medical advice.
Fosroc offers a comprehensive technical support service to If swallowed seek medical attention immediately - do not
specifiers, end users and contractors. It is also able to offer on- induce vomiting.
site technical assistance, an AutoCAD facility and dedicated
specification assistance in locations all over the world. For further information, please consult the Material Safety Data
Sheet for Nitocote ET402.
Estimating
Fire
Supply
Nitocote ET402 and Nitomortar FC are non-flammable.
Nitocote ET402 : 10 litre packs
Nitoprime 25 : 1 and 4 litre packs Nitoprime 25 and Fosroc Solvent 102 are flammable. Do not
Fosroc Solvent 102 : 5 litre packs use near a naked flame.

Coverage Flash points

Nitocote ET402 : 5.0 m2/litre @ 200 microns wft Nitoprime 25 : 55°C

Fosroc Solvent 102 : 33°C
(per coat)
Nitoprime 25 : 5.0 m2/litre

Note: Coverage figures quoted are theoretical, and based upon

application to a properly prepared substrate of nominal
C30 concrete.

Since application conditions vary greatly; due to substrate

porosity, quality of surface preparation, application
thickness and wastage factors, the on-site figures may
vary from those shown above.

In accordance with Commercial or Health & Safety

requirements packaging detail may alter. Please contact
your local Fosroc office for detail.

constructive solutions page 3

Nitocote ET402*

Additional Information
Fosroc manufacture a wide range of complementary
products which include :

ƒ Waterproofing membranes & waterstops

ƒ Joint sealants & filler boards

ƒ Cementitious & epoxy grouts

ƒ Specialised flooring materials

Fosroc additionally offers a comprehensive package of

products specifically designed for the repair and
refurbishment of damaged concrete. Fosroc’s ‘Systematic
Approach’ to concrete repair features the following:

ƒ Hand placed repair mortars

ƒ Spray grade repair mortars

ƒ Fluid micro concretes

ƒ Chemical resistant epoxy mortars

ƒ Anti carbonation / anti chloride protective coatings

ƒ Chemical and abrasion resistant coatings

For further information of any of the above, please consult

your local Fosroc – office as below.

PT.FOSROC
Indonesia
Jl.Akasia II Blok A8 No.1
Delta Silicon Industrial Park
Lippo Cikarang telephone: fax: email:
Bekasi 17550 +62 21 897 2103 +62 21 897 2107 indonesia@fosroc.co.id
Indonesia +62 22 520 1308 +62 22 522 2713
www.fosroc.com +62 31 502 9142 +62 31 502 2711

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