Safety Data Sheet

Section 1: Identification of the Substance/Mixture and of the Company/Undertaking

1.1 Product identifier

Product Name • S4WA
Synonyms •
1.2 Relevant identified uses of the substance or mixture and uses advised against
Relevant identified use(s) •
1.3 Details of the supplier of the safety data sheet
Manufacturer • Fenner Precision
Tritton Road
Lincoln, LN6 7AF 17545
United Kindom
https://www.fennerprecision.com/
info@fennerprecision.com
Telephone (General) • +44 01522 531821
Fax +44 01522 510029
1.4 Emergency telephone number
Manufacturer • +44 01522 531821 from 8-5 Monday -Friday

Section 2: Hazards Identification

According to: Regulation (EC) No 1272/2008 (CLP)/REACH 1907/2006 [amended by 2015/830]

2.1 Classification of the substance or mixture

CLP • Skin sensitization, Category 1 H317: May cause an allergic skin
Reproductive toxicity, Category 1B H360F: May damage fertility
2.2 Label Elements
CLP
Signal Word DANGER

Hazard statements • H317 – May cause an allergic skin reaction.

H360F: May damage fertility
Precautionary statements
Prevention • P201 - Obtain special instructions before use.
P202 - Do not handle until all safety precautions have been read and understood.
P272 – Contaminated work clothing should not be allowed out of the workplace.
P280 - Wear protective gloves/protective clothing/eye protection/face protection.
Response • P308+P313 - IF exposed or concerned: Get medical advice/attention.
P333+P313 – If skin irritation or rash occurs: Get medical advice/attention.
Storage/Disposal • P501 - Dispose of content and/or container in accordance with local, regional,
national, and/or international regulations.
Hazardous components which must be listed on the label Bis-(2,4-dichlorobenzoyl)

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2.3 Other Hazards • None known

Section 3 - Composition/Information on Ingredients

3.1 Substances
3.2 Mixtures
Chemical nature: Silicone compound
Hazardous Composition
CAS-No.
EC-No. Concentration Classifications According to
Chemical Name
Index-No. (%w/w) Regulation/Directive
Registration No
133-14-2 Org. Perox. B; H241,
Bis-(2,4-dichlorobenzoyl) peroxide 205-094-9 >=1-<10 Skin Sens. 1: H317
01-2119965137-32 Repr. 1B; H360F
556-67-2
Flam. Liq.3; H226
209-136-7
Octamethylcyclotetrasiloxane 014-018-00-1
>=0.25-<1 Repr.2; H361f
Aquatic Chronic 4; H413
01-2119529238-36
Repr. 1B; H360F
2,6-cis-Diphenylhexamethyl 33204-76-1
<0.0002 STOT RE 1: H372
cyclotetrasiloxane 251-406-1
Aquatic Chronic 4: H413
Abbreviations can be found in section 16.

Section 4 - First Aid Measures

4.1 Description of first aid measures
Inhalation • If vapors are inhaled, move victim to fresh air. Seek medical attention if symptoms persist.
Skin • In case of contact with substance, flush skin with soap and water for at least 20 minutes.
Eye • Solid material, not anticipated to enter eyes. If dust gets in eyes, flush water as a precaution. Get
medical attention if irritation develops and persists.
Ingestion • Solid material, not anticipated to be ingested. If grinding dust is ingested, DO NOT INDUCE
VOMITING. Get medical attention. Rinse mouth thoroughly with water.
4.2 Most important symptoms and effects, both acute and delayed
• May cause an allergic skin reaction. May damage fertility.
4.3 Indication of any immediate medical attention and special treatment needed
Notes to • No specific actions or treatments recommended related to exposure to this material.
Physician

Section 5 - Firefighting Measures

5.1 Extinguishing media
Suitable Extinguishing Media • SMALL FIRES: Dry chemical, CO2, or water spray or alcohol-resistant foam.
LARGE FIRES: CO2, water spray, fog or alcohol-resistant foam.
Unsuitable Extinguishing Media • None known.
5.2 Special hazards arising from the substance or mixture
Unusual Fire and Explosion • None known.
Hazards
Hazardous Combustion Products • Thermal breakdown of this product during fire of very high heat ay evolve the
following decomposition products: Silicon oxides, carbon oxides,
formaldehyde, and chlorine compounds.

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5.3 Advice for firefighters • Wear self-contained breathing apparatus (SCBA). Use personal protective
equipment. Use extinguishing measures that are appropriate to local
circumstances and the surrounding environment. Evacuate the area.

Section 6 - Accidental Release Measures

6.1 Personal precautions, protective equipment and emergency procedures
Personal Precautions • Use personal proves equipment and follow safe handling advice.

6.2 Environmental precautions

• Discharge into the environment must be avoided.
6.3 Methods and material for containment and cleaning up
Containment/Clean-up • Sweep up or vacuum up spillage and collect in suitable container for disposal. The pilled
Measures product produces an extremely slipper surface.

6.4 Reference to other sections

• Refer to Section 7 – Handling and Storage, Section 8 - Exposure Controls/Personal
Protection, Section 11- Toxicology Information and Section 13 - Disposal Considerations.

Section 7 - Handling and Storage

7.1 Precautions for safe handling
Handling • When grinding, local exhaust ventilation is recommended. General ventilation is required. Avoid getting
grinding dust in eyes. Do not ingest. Do not breather vapors.
Handle in accordance with good industrial hygiene and safety practice, based on the results of the
workplace exposure assessment. When using, wash hands before eating, drinking or smoking.
7.2 Conditions for safe storage, including any incompatibilities
Storage • Keep in properly labelled containers. Keep container tightly closed. Store in a cool, dry, well-ventilated
place. Do not store with strong oxidizing agents, organic peroxides, explosives, and gases.
7.3 Specific end use(s)
• These precautions are for room temperature handling.

Section 8 - Exposure Controls/Personal Protection

8.1 Control parameters
Exposure Limits/Guidelines
Components CAS Value Type (Form of Exposure) Control Parameters Basis
TWA (inhalable) 6 mg/m3 (Silica) GB EH40

Silicon Dioxide 7631-869 TWA (Respirable Dust) 2.4 mg/m3 (Silica) GB EH40
Not that Silicon dioxide is inextricably bound in the product and therefore does not
contribute to a dust inhalation hazard.
Octamethylcyclotetrasiloxane 556-67-2 TWA 10 ppm US WEEL
2,6-cis-Diphenylhexamethyl 33204-76-1 TWA (gas) 0.5ppb DCC OEL
cyclotetrasiloxane Skin TWA (aerosol) O.7 mcg/M3 DCC OEL

Derived No Effect Level (DNEL) according to Regulation (EC) No. 1907/2006

Substance Name End Use Exposure routes Potential health effects Value
Inhalation Long-term systemic effects 3.53 mg/m3
Bis-(2,4-dichlorobenzoyl) peroxide Workers
Skin contact Long-term systemic effects 10 mg/kg bw/day

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 Acute systemic effects
Acute local effects
Workers Inhalation 73 mg/m3
Long-term systemic effects
Long-term local effects
Acute systemic effects
Octamethylcyclotetrasiloxane
Acute local effects
Inhalation 13 mg/m3
Long-term systemic effects
Consumers
Long-term local effects
Acute systemic effects
Ingestion 3.7 mg/kg bw/day
Long-term systemic effects
Predicted No Effect Concentration (PNEC) according to Regulation (EC) No. 1907/2006
Substance Name Environmental Compartment Value
Fresh water 0.6 ug/l
Marine water 0.06 ug/l
Sewage treatment plant 50 mg/l
Bis-(2,4-dichlorobenzoyl) peroxide
Fresh water sediment 3.8 mg/kg dry weight (d.w)
Marine sediment 3.8 mg/kg dry weight (d.w)
Soil 0.76 mg/kg dry weight (d.w)
Fresh water 0.00044 mg/l
Marine water 0.000044 mg/l
Sewage treatment plant >10 mg/;
Octamethylcyclotetrasiloxane
Fresh water sediment 0.64 mg/kg
Marine sediment 0.064mg/l
Soil 0.13 mg/kg

8.2 Exposure controls

Engineering • Processing may form hazardous components (see section 10). Minimize workplace
Measures/Controls exposure concentrations. Use with local ventilation.
Personal Protective Equipment
Respiratory • Use respiratory protection unless adequate local exhaust ventilation is provided or exposure
assessment demonstrates that exposures are within recommended exposure guidelines.
Filter type – organic vapor type (A).
Eye/Face • Wear safety glasses.
Hand Protection • Wear appropriate chemical resistant gloves. Choose gloves to protect hands against
chemicals depending on the concentration and quantity of the hazardous substance and
specific to place of work. Breakthrough time is not determined for the product. Change
gloves often! For special applications, we recommend clarifying the resistance to chemicals
of the aforementioned protective gloves with the glove manufacturer. Wash hands before
breaks and at the end of workday.
Skin & Body Select appropriate protective clothing based on chemical resistance data and an
assessment of the local exposure potential. Skin contact must be avoided by using
impervious protective clothing (gloves, aprons, boots, etc.)
Environmental • Follow best practice for site management and disposal of waste.
Exposure Controls

Section 9 - Physical and Chemical Properties

9.1 Information on Basic Physical and Chemical Properties
Material Description
Physical Form Solid Appearance/Description Rubber crepe - brown
Color Brown Odor None

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Odor Threshold No data available
General Properties
Boiling Point Not applicable Melting Point/Freezing Point Not applicable
Decomposition Temperature No data available pH Not applicable
Specific Gravity/Relative Density Not applicable Water Solubility No data available
Viscosity Not applicable Explosive Properties Not explosive
Mixture – not classified as an
Oxidizing Properties: Relative Density 1.17
oxidzer
Volatility
Vapor Pressure Not applicable Vapor Density Not applicable
Evaporation Rate Not applicable VOC (Wt.) Not applicable
VOC (Vol.) Not applicable Volatiles (Wt.) Not applicable
Volatiles (Vol.) Not applicable
Flammability
Flash Point Not applicable UEL Not applicable
LEL Not applicable Autoignition Not applicable
Flammability (solid, gas) Not applicable
Environmental
Octanol/Water Partition coefficient Data lacking
9.2 Other Information
• No additional physical and chemical parameters noted.

Section 10: Stability and Reactivity

10.1 Reactivity
• Not classified as a reactivity hazard.
10.2 Chemical stability
• Stable under normal conditions.
10.3 Possibility of hazardous reactions
• Hazardous reactions:
Use at elevated temperatures may form highly hazardous compounds. Can react with strong oxidizing agents.
O O
When heated to temperatures above 150 C (300 F) in the presence of air, product can form formaldehyde
vapors. Safe handling conditions may be maintained by keeping vapor concentrations within the occupational
exposure limit for formaldehyde. Hazardous decomposition products will be formed at elevated temperatures.
10.4 Conditions to avoid: None known.
10.5 Incompatible materials: Oxidizing agents.
10.6 Hazardous decomposition products Benzene, Formaldehyde

Section 11 - Toxicological Information

11.1 Information on toxicological effects
 Information on likely routes of exposure: Skin contact, Ingestion, Eye contact.
 Acute toxicity: Not classified based on available information.
 Skin corrosion/irritation: Not classified based on available information
 Serious eye damage/eye irritation: Not classified based on available information
 Skin sensitization: May cause an allergic skin reaction
 Respiratory sensitization: Not classified based on available information
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  Germ cell mutagenicity: Not classified based on available information
 Carcinogenicity: Not classified based on available information
 STOT-single exposure: Not classified based on available information
 STOT-repeated exposure: Not classified based on available information
 Aspiration toxicity: Not classified based on available information

Components Effects
Acute toxicity: LD50 (Rat) >2,500 mg/kg. Assessment: The substance or mixture has no acute oral toxicity/
Acute dermal toxicity: LD50 (Rabbit): >8,000 mg/kg
Skin corrosion/irritation: Species: Rabbit: Result No skin irritation
Serious eye damage/eye irritation: Species: Rabbit: Method: OECD Test Guideline 405; Result No eye irritation.
Skin sensitization: Test Type: Local lymph node assay (LLNA); Exposure routes: Skin contact; Species: Mouse;
Method: OECD Test Guideline 429: Result positive. Assessment: Probability or evidence of skin sanitization in
Bis-(2,4-
humans.
dichlorobenzoyl)
Germ cell mutagenicity: Genotoxicity in vitro. Test Type: In vitro mammalian cell gene mutation test. Method: OECD
peroxide:
Test Guideline 476; Result: negative.
Reproduction Toxicity: Effects on fertility: Species – Rat; Application route – ingestion: Result – positive.
Reproductive toxicity-Assessment: Clear evidence of adverse effects on sexual function and fertility based on animal
experiments.
STOT – repeated exposure: Species-Rat; NOAEL – 100 mg/kg; Application Route – ingestion; Exposure time – 90
days; Method-OECD Test Guide 408.
Acute toxicity: LD50 (Rat) >4,800 mg/kg. Assessment: The substance or mixture has no acute oral toxicity on the
basis test results.
Acute inhalation toxicity: LC50 (rat): 2975ppm: Exposure time 4 hour; test atmosphere: vapor; Assessment: The
substance or mixture has no acute inhalation toxicity based on test data.
Acute dermal toxicity: LD50 (Rabbit) >2.5 ml/kg. Assessment: The substance or mixture has no acute dermal
toxicity based on test data.
Skin corrosion/irritation: Species - Rabbit: Result No skin irritation based on test data.
Serious eye damage/eye irritation: Species - Rabbit: Result: No eye irritation based on test data.
Skin sensitization: Assessment-Does not cause skin sensitization; Test Type –Maximization test; Species – Guinea
pig; Result – negative based on test results
Germ cell mutagenicity: Genotoxicity in vitro: Test Type – Bacterial reverse mutation assay (AMES); Result –
negative based on test results. Test Type – Mutagenicity (in vitro mammalian cytogenetic test); Result – negative
based on test results. Test Type – Chromosome aberration test in vitro; Result – negative based on test results. Test
Type – In vitro sister chromatid exchange assay in mammalian cells; Result – negative based on test data. Test
Type- Mammalian erythrocyte micronucleus test (in vivo cytogenetic assay): Species – Rat; Application Route –
inhalation (vapor); Result negative based on test data.
Germ cell mutagenicity Assessment: Animal testing did not show any mutagenic effects.
Octamethylcyclotetra-
Reproduction Toxicity: Effects on fertility: Test Type: Two generation reproduction toxicity study; Species-Rat, male
siloxane
and female; application Route – inhalation (vapor); Symptoms – effects on fertility based on test data.
Effects on fetal development: Test Type – Prenatal development toxicity study (teratogenicity); Species – rabbit;
application route – inhalation (vapor); Symptoms – no effects on fetal development based on basis of test data.
Reproductive toxicity assessment: Some evidence of adverse effects on sexual function and fertility, based on
animal experiments.
STOT – Single exposure: Exposure routes – ingestion; Assessment: No significant health effects observed in
animals at concentrations of 100 mg/kg bw or less. Exposure route – inhalation (vapor). Assessment: Mo significant
health effects observed in animals at concentrations of 1 mg/l/6h/d or less. Exposure routes – skin contact.
Assessment: No significant health effects observed in animals at concentrations of 200 mg/kg bw or less.
STOT – repeated exposure: Species-Rat; Application Route – ingestion; Based on test data. Species – rat;
Application route – inhalation (vapor); Remarks; Based on test data.
Aspiration toxicity: Remarks: Results from a 2 year repeated vapor inhalation exposure study to rats of
octamethycyclotetrasiloxane (D4) indicate effects (benign uterine adenomas) in the uterus of female animals. This
finding occurred at the highest exposure dose (700 ppm) only. Studies to date have not demonstrated if these effects
occur through pathways that are relevant to humans. Repeated exposure in rats to D4 resulted in protoporphyrin
accumulation in the liver. Without knowledge of the specific mechanism leading to the protoporphyrin accumulation
the relevance of this finding to humans is unknown.
Acute toxicity: LD50 (Rat) >2,000 mg/kg. Assessment: The substance or mixture has no acute oral toxicity based on
test data.
Germ cell mutagenicity: Genotoxicity in vitro: Result negative based on test data.
2,6-Cis- Reproductive Toxicity: Effects on fertility: Application route – ingestion; Symptoms- effects on fertility; Based on test
Diphenylhexamathyl data.
cyclotetrasiloxane STOT – Exposure route – ingestion. Target organs: Adrenal gland, Pituitary gland, Bone, Liver, Spleen:
Assessment: Shown to produce significant health effects in animals at concentrations of 10 mg/kg bw or less.
Repeated dose: Species-Rat; Application route – ingestion; Target organs: Adrenal gland, Pituitary gland, Bone,
Liver, Spleen: Remarks: Based on test data.

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 Section 12 - Ecological Information
12.1 Toxicity
Components
Toxicity-Fish: 96 Hour(s) LC50 Poecilia reticulate (guppy)>1000 mg/l; Method OECD Test Guideline 203
84 Day(s) NOEC Eastern mosquito fish 0.375 mg/L
Bis-(2,4- Toxicity to Daphnia and Other Aquatic Invertebrates: 48 Hour(s) EL50 Daphnia Magna (Water Flea) >100 mg/l:
dichlorobenzoyl) Test substance: Water Accommodated Fraction; Method: OECD Test Guideline 202
peroxide: Toxicity-Algae: 72 Hour(s) EL50 Pseudokirchneriella subcapitata (Green Algae) 100 mg/L; Test substance: Water
Accommodated Fraction; Method: OECD Test Guideline 201.
Toxicity-Microorganisms: 0.5 Hour(s) EC10: 500-1,000 mg/l; Method OECD Test Guideline 209
Toxicity-Fish: 336 Hour(s) LC50 Cyprinodon variegatus (Sheepshead Minnow) >0.0063 mg/L: Remarks: No
toxicity at the limit of solubility
Toxicity to Daphnia and Other Aquatic Invertebrates: 96Hour(s) EC50 Mysidopsis bahia (Opossum Shrimp)
0.0091 mg/L: Remarks: No toxicity at the limit of solubility
Toxicity-Algae: 72 Hour(s) ErC50 Pseudokirchneriella subcapitata (Green Algae) >0.022 mg/L : Remark: No
Octamethylcyclotetra-
toxicity at the limit of solubility
siloxane Toxicity-Fish (Chronic Toxicity): Oncorhynchus mykiss (rainbow trout); NOEC >= 0.0044 mg/L; Remarks: On the
basis of test data; no toxicity at the limit of solubility
Toxicity to Daphnia and Other Aquatic Invertebrates: 21 Days; Daphnia Magna (Water Flea); NOEC >= 0.0079
mg/L; Remarks: On the basis of test data; no toxicity at the limit of solubility
Ecotoxicology Assessment: Chronic aquatic toxicity: May cause long lasting harmful effects to aquatic life.
2,6-Cis-
Diphenylhexamathyl Ecotoxicology Assessment: Chronic aquatic toxicity: May cause long lasting harmful effects to aquatic life.
cyclotetrasiloxane
12.2 Persistence and degradability
Components
Biodegradability: Result: Not readily biodegradable. Biodegradation – 43%; Exposure
Bis-(2,4-dichlorobenzoyl) peroxide:
time 28 days; Method – OECD Test Guideline 310D
Biodegradability: Result: Not readily biodegradable. Biodegradation – 3.7%; Exposure
time 28 days; Method – OECD Test Guideline 310
Octamethylcyclotetrasiloxane
Stability in Water: Degradation half-life: 69.3-144 hours (24.6 0C); pH 7; Method
OECD Rest Guideline 111
2,6-Cis-Diphenylhexamathyl cyclotetrasiloxane Biodegradability: Result: Not readily biodegradable

12.3 Bioaccumulative potential

Components
Bis-(2,4-dichlorobenzoyl) peroxide: Partition coefficient: n-Octanol/water: log Pow: 6
Bioaccumulation: Bioconcentration factor (BCF) >500; Remarks: Based on data from
2,6-Cis-Diphenylhexamathyl cyclotetrasiloxane
similar materials.

12.4 Mobility in Soil

• No data available

12.5 Results of PBT and vPvB assessment

Components
Assessment: Remarks: Octamethylcyclotetrasiloxane (D4) meets the current REACH Annex XIII criteria for
PBT and vPvB. In Canada, D4 has been assessed and deemed to meet the PiT criteria. However, D4 does
not behave similarly to known PBT/vPvB substances. The weight of scientific evidence from field studies
Octamethylcyclotetrasiloxane
shows that D4 is not biomagnifying in aquatic and terrestrial food webs. D4 in air will degrade by reaction
with naturally occurring hydroxyl radicals in the atmosphere. Any D4 in air that does not degrade by reaction
with hydroxyl radicals is not expected to deposit from the air to water, to land, or to living organisms.

12.6 Other adverse effects

• No data available

Section 13 - Disposal Considerations

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13.1 Waste treatment methods
Product • Dispose of content and/or container in accordance with local, regional, national, and/or international
waste regulations. According to the European Waste Catalogue, Waste Codes are not product specific, but
application specific. Waste codes should be assigned by the user, preferably in discussion with the
waste disposal authorities.
Packaging • Dispose of content and/or container in accordance with local, regional, national, and/or international
waste regulations. Empty containers should be taken to an approved waste handling site for recycling or
disposal. If not otherwise specified: Dispose of as an unused product.

Section 14 - Transport Information

14.1 UN 14.2 UN proper 14.3 Transport hazard 14.4 Packing 14.5 Environmental
number shipping name class(es) group hazards
DOT Not applicable Not applicable Not applicable Not applicable Not applicable
TDG Not applicable Not applicable Not applicable Not applicable Not applicable
IMO/IMDG Not applicable Not applicable Not applicable Not applicable Not applicable
IATA/ICAO Not applicable Not applicable Not applicable Not applicable Not applicable

14.6 Special precautions for user • None specified.

14.7 Transport in bulk according to Annex II of Marpol and the IBC Code • Not applicable for product as supplied.

Section 15 - Regulatory Information

15.1 Safety, health and environmental regulations/legislation specific for the substance or
mixture
REACH – Candidate List of Substances of Very High Concern for Authorisation (Article 59): Not applicable
Regulation (EC) No 1005/2009 on substances that deplete the ozone: Not applicable
Regulation (EC) No 850/2004 on persistent organic pollutants: Not applicable
Regulation (EC) No 649/2012 of the European Parliament and Council concerning the export and import of dangerous
chemicals: Not applicable
Seveso III: Directive 2010/18/EU of the European Parliament and of the Council on the control of major-accident
hazards involving dangerous substances.: Not applicable
Other Regulations:
Take note of Directive 92/85/EEC regarding maternity protection or stricter national regulations, where applicable.
Take note of Directive 94/33/EC on the protection of young people at work or stricter national regulations, where
applicable

15.2 Chemical Safety Assessment

• No Chemical Safety Assessment has been carried out.

Section 16 - Other Information

Revision Date • 22/June/2018
Preparation Date • 04/October/2016
Disclaimer/Statement • This information relates only to the specific material designated herein and does not relate
of Liability to use in combination with any other material or in any process. The information is derived
from the best available sources and is current as of the date of this Safety Data Sheet.
Since the use of this information and the conditions of use of this product are not within the
control of Fenner Precision, it is the user's responsibility to determine the suitability and
completeness of this information, and the conditions of safe use of the product, for his own
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 particular use.
Key to abbreviations
ADN European Agreement concerning the International Carriage of Dangerous Goods by Inland Waterways n
ADR European Agreement concerning the International Carriage of Dangerous Goods by Road
Aquatic Chronic: Chronic aquatic toxicity
bw Body Weight
CLP Classification Labeling Packaging Regulation; Regulation (EC) No. 1272/2008
ECX Concentration associated with x% response
ErCX Concentration associated with % growth rate response
Flam. Liq. Flammable Liquids
IC50 Half maximal inhibitory concentration
LC50 Lethal Concentration to 50% of a test population
LD 50 Lethal Dose to 50% of a test population (Median Lethal Dose)
OECD Organization for Economic Co-operation and Development
Org. Perox. Organic Peroxides
NDA: No Data Available
NO(A)EC No observed (Adverse) effect concentration
NO(A)EL No observed (Adverse) effect level
PBT Persistent, Bioaccumulative and Toxic substance
Repr. Reproduction toxicity
Skin Sens. Skin sensitization
STOT RE Specific target organ toxicity – repeated exposure
GB EH40 UK. EH40 WEL – Workplace Exposure Limits
US WEEL USA Workplace Environmental Exposure Levels (WEEL)
DCC OEL/TWA Time weighted average
GB EH40/TWA Long-term exposure limit (8-hour TWA reference period)
US WEEL/TWA Time weighted average
vPvB Very Persistent and Very Bioaccumulative

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