SIGMA-ALDRICH

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Material Safety Data Sheet

1. PRODUCT AND COMPANY IDENTIFICATION Product name Product Number Brand Product Use Supplier : : : : :

Ammonium thiosulfate
336726 Aldrich For laboratory research purposes. Sigma-Aldrich Canada, Ltd 2149 Winston Park Drive OAKVILLE ON L6H 6J8 CANADA +1 9058299500 +1 9058299292 1-800-424-9300 Manufacturer : Sigma-Aldrich Corporation 3050 Spruce St. St. Louis, Missouri 63103 USA

Telephone Fax Emergency Phone # (For both supplier and manufacturer) Preparation Information

: : :

Sigma-Aldrich Corporation Product Safety - Americas Region 1-800-521-8956

2. HAZARDS IDENTIFICATION Emergency Overview WHMIS Classification Not WHMIS controlled. GHS Classification Acute toxicity, Oral (Category 5) GHS Label elements, including precautionary statements Pictogram Signal word Hazard statement(s) H303 Precautionary statement(s) HMIS Classification Health hazard: Flammability: Physical hazards: Potential Health Effects Inhalation Skin Eyes Ingestion May be harmful if inhaled. May cause respiratory tract irritation. May be harmful if absorbed through skin. May cause skin irritation. May cause eye irritation. May be harmful if swallowed. 1 0 0 none Warning May be harmful if swallowed. none

3. COMPOSITION/INFORMATION ON INGREDIENTS Formula Molecular Weight

: :

H8N2O3S2 148.21 g/mol

CAS-No.

EC-No.

Index-No. -

Concentration -

Ammonium thiosulphate 7783-18-8 231-982-0 4. FIRST AID MEASURES

General advice Consult a physician. Show this safety data sheet to the doctor in attendance. If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Consult a physician. In case of eye contact Flush eyes with water as a precaution. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. 5. FIREFIGHTING MEASURES Conditions of flammability Not flammable or combustible. Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Special protective equipment for firefighters Wear self contained breathing apparatus for fire fighting if necessary. Hazardous combustion products Hazardous decomposition products formed under fire conditions. - nitrogen oxides (NOx), Sulphur oxides Explosion data - sensitivity to mechanical impact no data available Explosion data - sensitivity to static discharge no data available 6. ACCIDENTAL RELEASE MEASURES Personal precautions Use personal protective equipment. Avoid dust formation. Avoid breathing vapors, mist or gas. Avoid breathing dust. Environmental precautions Do not let product enter drains. Methods and materials for containment and cleaning up Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal. 7. HANDLING AND STORAGE Precautions for safe handling Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed. Normal measures for preventive fire protection. Conditions for safe storage Keep container tightly closed in a dry and well-ventilated place.

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8. EXPOSURE CONTROLS/PERSONAL PROTECTION Contains no substances with occupational exposure limit values. Personal protective equipment Respiratory protection Respiratory protection is not required. Where protection from nuisance levels of dusts are desired, use type N95 (US) or type P1 (EN 143) dust masks. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Hand protection Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. Immersion protection Material: Nitrile rubber Minimum layer thickness: 0.11 mm Break through time: > 480 min Material tested:Dermatril (Aldrich Z677272, Size M) Splash protection Material: Nitrile rubber Minimum layer thickness: 0.11 mm Break through time: > 30 min Material tested:Dermatril (Aldrich Z677272, Size M) data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 873000, e-mail sales@kcl.de, test method: EN374 If used in solution, or mixed with other substances, and under conditions which differ from EN 374, contact the supplier of the CE approved gloves. This recommendation is advisory only and must be evaluated by an Industrial Hygienist familiar with the specific situation of anticipated use by our customers. It should not be construed as offering an approval for any specific use scenario. Eye protection Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin and body protection Choose body protection in relation to its type, to the concentration and amount of dangerous substances, and to the specific work-place., The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Hygiene measures Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Specific engineering controls Use mechanical exhaust or laboratory fumehood to avoid exposure. 9. PHYSICAL AND CHEMICAL PROPERTIES Appearance Form Colour Safety data pH Melting point/freezing point Boiling point Flash point
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Crystals with lumps white

no data available no data available no data available no data available

Ignition temperature Autoignition temperature Lower explosion limit Upper explosion limit Vapour pressure Density Water solubility Partition coefficient: n-octanol/water Relative vapour density Odour Odour Threshold Evaporation rate

no data available no data available no data available no data available no data available 1.679 g/cm3 at 25 C (77 F) no data available no data available no data available no data available no data available no data available

10. STABILITY AND REACTIVITY Chemical stability Stable under recommended storage conditions. Possibility of hazardous reactions no data available Conditions to avoid no data available Materials to avoid Strong oxidizing agents, Strong acids, Magnesium, Aluminum Hazardous decomposition products Hazardous decomposition products formed under fire conditions. - nitrogen oxides (NOx), Sulphur oxides Other decomposition products - no data available 11. TOXICOLOGICAL INFORMATION Acute toxicity Oral LD50 LD50 Oral - rat - 2,890 mg/kg Remarks: Lungs, Thorax, or Respiration:Emphysema. Kidney, Ureter, Bladder:Changes in tubules (including acute renal failure, acute tubular necrosis). Blood: Hemorrhage. Inhalation LC50 no data available Dermal LD50 no data available Other information on acute toxicity no data available Skin corrosion/irritation Skin - rabbit - No skin irritation Serious eye damage/eye irritation Eyes - rabbit - No eye irritation Respiratory or skin sensitization no data available
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Germ cell mutagenicity no data available Carcinogenicity IARC: ACGIH: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC. No component of this product present at levels greater than or equal to 0.1% is identified as a carcinogen or potential carcinogen by ACGIH.

Reproductive toxicity no data available

Teratogenicity

no data available Specific target organ toxicity - single exposure (Globally Harmonized System) no data available Specific target organ toxicity - repeated exposure (Globally Harmonized System) no data available Aspiration hazard no data available Potential health effects Inhalation Ingestion Skin Eyes May be harmful if inhaled. May cause respiratory tract irritation. May be harmful if swallowed. May be harmful if absorbed through skin. May cause skin irritation. May cause eye irritation.

Signs and Symptoms of Exposure To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. Synergistic effects no data available Additional Information RTECS: XN6465000 12. ECOLOGICAL INFORMATION Toxicity no data available Persistence and degradability no data available Bioaccumulative potential no data available Mobility in soil no data available PBT and vPvB assessment no data available Other adverse effects no data available 13. DISPOSAL CONSIDERATIONS
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Product Offer surplus and non-recyclable solutions to a licensed disposal company. Contaminated packaging Dispose of as unused product. 14. TRANSPORT INFORMATION DOT (US) Not dangerous goods IMDG Not dangerous goods IATA Not dangerous goods 15. REGULATORY INFORMATION WHMIS Classification Not WHMIS controlled. This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all the information required by the Controlled Products Regulations. 16. OTHER INFORMATION Further information Copyright 2012 Sigma-Aldrich Co. LLC. License granted to make unlimited paper copies for internal use only. The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. Sigma-Aldrich Corporation and its Affiliates shall not be held liable for any damage resulting from handling or from contact with the above product. See www.sigma-aldrich.com and/or the reverse side of invoice or packing slip for additional terms and conditions of sale.

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