Section 1. Chemical Product and Company Identification
Potassium Thiosulfate
Common Name/
Trade Name
Manufacturer
Commercial Name(s)
Synonym
Chemical Name
Chemical Family
Potassium Thiosulfate
Section 4. First Aid Measures
Eye Contact Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at
least 15 minutes. Cold water may be used. Get medical attention.
Skin Contact In case of contact, immediately flush skin with plenty of water. Cover the irritated skin with an emollient. Remove
contaminated clothing and shoes. Cold water may be used.Wash clothing before reuse. Thoroughly clean shoes
before reuse. Get medical attention.
Serious Skin Contact Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek medical
attention.
Inhalation If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get
medical attention.
Serious Inhalation Not available.
Ingestion Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an
unconscious person. If large quantities of this material are swallowed, call a physician immediately. Loosen tight
clothing such as a collar, tie, belt or waistband.
Serious Ingestion Not available.
Section 5. Fire and Explosion Data
Flammability of the Product May be combustible at high temperature.
Auto-Ignition Temperature Not available.
Flash Points Not available.
Flammable Limits Not available.
Products of Combustion Not available.
Fire Hazards in Presence of Slightly flammable to flammable in presence of heat.
Various Substances
Explosion Hazards in Presence Risks of explosion of the product in presence of mechanical impact: Not available.
of Various Substances Risks of explosion of the product in presence of static discharge: Not available.
Fire Fighting Media SMALL FIRE: Use DRY chemical powder.
and Instructions LARGE FIRE: Use water spray, fog or foam. Do not use water jet.
Special Remarks on As with most organic solids, fire is possible at elevated temperatures
Fire Hazards
Special Remarks on Explosion Not available.
Hazards
Section 6. Accidental Release Measures
Small Spill Use appropriate tools to put the spilled solid in a convenient waste disposal container. Finish cleaning by
spreading water on the contaminated surface and dispose of according to local and regional authority
requirements.
Large Spill Use a shovel to put the material into a convenient waste disposal container. Finish cleaning by spreading water
on the contaminated surface and allow to evacuate through the sanitary system.
Potassium Thiosulfate
Section 7. Handling and Storage
Precautions Keep away from heat. Keep away from sources of ignition. Empty containers pose a fire risk, evaporate the
residue under a fume hood. Ground all equipment containing material. Do not breathe dust. Wear suitable
protective clothing. In case of insufficient ventilation, wear suitable respiratory equipment. If you feel unwell, seek
medical attention and show the label when possible. Avoid contact with skin and eyes. Keep away from
incompatibles such as oxidizing agents, acids.
Storage Keep container tightly closed. Keep container in a cool, well-ventilated area.
Section 8. Exposure Controls/Personal Protection
Engineering Controls Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below
recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to
airborne contaminants below the exposure limit.
Personal Protection Splash goggles. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent.
Gloves.
Personal Protection in Case of Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used
a Large Spill to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist
BEFORE handling this product.
Exposure Limits Not available.
Section 9. Physical and Chemical Properties
Physical state and appearance Solid. Odor Not available.
Not available.
Taste
Molecular Weight 194.08 g/mole
Not available.
Color
Not available.
pH (1% soln/water)
Boiling Point Not available.
Not available.
Melting Point
Critical Temperature Not available.
Specific Gravity 1.484 (Water = 1)
Vapor Pressure Not applicable.
Vapor Density Not available.
Not available.
Volatility
Odor Threshold Not available.
Water/Oil Dist. Coeff. Not available.
Ionicity (in Water) Not available.
Dispersion Properties See solubility in water.
Solubility Soluble in cold water.
Section 10. Stability and Reactivity Data
Stability The product is stable.
Instability Temperature Not available.
Conditions of Instability Excess heat, incompatible materials
Incompatibility with various Reactive with oxidizing agents, acids.
substances
Potassium Thiosulfate
Corrosivity Not available.
Special Remarks on Not available.
Reactivity
Special Remarks on Not available.
Corrosivity
Polymerization Will not occur.
Section 11. Toxicological Information
Routes of Entry Inhalation. Ingestion.
Toxicity to Animals LD50: Not available.
LC50: Not available.
Chronic Effects on Humans Not available.
Other Toxic Effects on Hazardous in case of skin contact (irritant), of ingestion, of inhalation.
Humans
Special Remarks on Not available.
Toxicity to Animals
Special Remarks on Not available.
Chronic Effects on Humans
Special Remarks on other Not available.
Toxic Effects on Humans
Section 12. Ecological Information
Not available.
Ecotoxicity
BOD5 and COD Not available.
Products of Biodegradation Possibly hazardous short term degradation products are not likely. However, long term degradation products may
arise.
Toxicity of the Products The product itself and its products of degradation are not toxic.
of Biodegradation
Special Remarks on the Not available.
Products of Biodegradation
Section 13. Disposal Considerations
Waste Disposal Waste must be disposed of in accordance with federal, state and local environmental
control regulations.
Section 14. Transport Information
DOT Classification Not a DOT controlled material (United States).
Identification Not applicable.
Special Provisions for Not applicable.
Transport
Potassium Thiosulfate
DOT (Pictograms)
Section 15. Other Regulatory Information and Pictograms
TSCA 8(b) inventory: Potassium Thiosulfate
Federal and State
Regulations
California California prop. 65: This product contains the following ingredients for which the State of California has found
to cause cancer which would require a warning under the statute: No products were found.
Proposition 65
Warnings
California prop. 65: This product contains the following ingredients for which the State of California has found
to cause birth defects which would require a warning under the statute: No products were found.
Other Regulations EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances (EINECS No.
233-666-8).
Canada: Listed on Canadian Domestic Substance List (DSL).
China: Listed on National Inventory.
Japan: Listed on National Inventory (ENCS).
Korea: Listed on National Inventory (KECI).
Philippines: Listed on National Inventory (PICCS).
Australia: Listed on AICS.
Other Classifications WHMIS (Canada) Not controlled under WHMIS (Canada).
DSCL (EEC) R36/38- Irritating to eyes and skin. S26- In case of contact with eyes, rinse
immediately with plenty of water and seek
medical advice.
S37- Wear suitable gloves.
Health Hazard
HMIS (U.S.A.) 2 National Fire Protection
1 Flammability
1 Association (U.S.A.)
Fire Hazard
2 0 Reactivity
Health
Reactivity
0
Specific hazard
Personal Protection
E
WHMIS (Canada)
(Pictograms)
DSCL (Europe)
(Pictograms)
TDG (Canada)
(Pictograms)
ADR (Europe)
(Pictograms)
Protective Equipment
Gloves.
Potassium Thiosulfate
Lab coat.
Dust respirator. Be sure to use an
approved/certified respirator or
equivalent.
SECTION 16 - ADDITIONAL INFORMATION
N/A
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