Section 1: Product Identification
Chemical Name: Cobalt (II) sulfide (99.5%-Co)
CAS Registry Number: 1317-42-6
Formula: CoS
EINECS Number: 215-273-3
Chemical Family: metal chalcogenides
Synonym: Cobalt monosulfide, Cobaltous sulfide
Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title Compound 1317-42-6 100% 0.02mg/m3 (as Co) no data
Section 3: Hazards Identification
Irritating to eyes, skin and respiratory tract. May cause sensitization by skin contact. Limited evidence of a
Emergency Overview:
carcinogenic effect. Possible risk of irreversible effects.
Primary Routes of Exposure: Ingestion, inhalation, skin and eyes
Eye Contact: Causes mild to moderate irritation of the eyes.
Skin Contact: Causes slight irritation of the skin. may cause sensitization by skin contact.
Inhalation: Irritating to the nose, mucous membranes and respiratory tract.Hydrogen sulfide gas, if formed, is poisonous.
May cause abdominal pain, nausea, vomiting, flushing of the face and ears, mild hypotension, rash and
Ingestion:
ringing in the ears.
Irritating to eyes, skin and respiratory tract. Hydrogen sulfide gas may cause painful conjunctivitis, headache,
Acute Health Affects:
nausea, dizziness, pulmonary edema and possible death.
Repeated oral administration may produce goiter and reduced thyroid activity. Prolonged or repeated skin
Chronic Health Affects: exposure may cause dermatitis. Chronic exposure associated with kidney, heart and lung damage. Limited
evidence of a carcinogenic effect. Possible risk of irreversible effects.
NTP: No
IARC: Yes
OSHA: No
SECTION 4: First Aid Measures
Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
Eye Exposure:
assistance in keeping their eye lids open. Get immediate medical attention.
Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
Skin Exposure:
irritation persists.
Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
Inhalation:
in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
Ingestion:
vomiting only if directed by medical personnel.
SECTION 5: Fire Fighting Measures
Flash Point: not applicable
Autoignition Temperature: no data
Explosion Limits: no data
Extinguishing Medium: carbon dioxide or dry powder
If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure
Special Fire Fighting Procedures:
self- contained breathing apparatus and full protective clothing.
Hazardous Combustion and If involved in a fire this material may emit irritating fumes of hydrogen sulfide and sulfur dioxide.
Decomposion Products:
Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.
SECTION 6: Accidental Release Measures
Spill and Leak Procedures: Small spills can be mixed with vermiculite or sodium carbonate and swept up.
SECTION 7: Handling and Storage
Store in a tightly sealed container. Exposure to the atmosphere may lead to release of toxic hydrogen sulfide
Handling and Storage:
gas. Empty containers may retain product residues that evolve toxic gases.
SECTION 8: Exposure Controls and Personal Protection
Eye Protection: Always wear approved safety glasses when handling a chemical substance in the laboratory.
Skin Protection: Wear appropriate chemical resistant gloves and protective clothing.
Ventilation: If possible, handle the material in an efficient fume hood.
If ventilation is not available a respirator should be worn. The use of a respirators requires a Respirator
Respirator:
Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation: If possible, handle the material in an efficient fume hood.
Additional Protection: No additional protection required.
SECTION 9: Physical and Chemical Properties
Color and Form: -200 mesh black pwdr.
Molecular Weight: 91
Melting Point: no data
Boiling Point: no data
Vapor Pressure: no data
Specific Gravity: 5.45
Odor: none
Solubility in Water: Insoluble
SECTION 10: Stability and Reactivity
Stability: moisture sensitive
Hazardous Polymerization: no hazardous polymerization
Conditions to Avoid: Reaction with mineral acids can lead to formation of toxic fumes of hydrogen sulfide.
Incompatibility: Mineral acids, active metals and oxidizing agents
Decomposition Products: hydrogen sulfide, sulfur dioxide, and metal oxides.
SECTION 11: Toxicological Information
Oral (rat); LD50: >5 gm/kg. Intramuscular (rat); TDLo: 180 mg/kg. Hamster embryo; Morphological
RTECS Data: transfusion: 1 mg/L. Hamster ovary; DNA damage: 10 mg/L. Hamster lung; Mutation in mammalian somatic
cells: 25 mg/m3.
Carcinogenic Effects: Possible carcinogen (as Co)
Mutagenic Effects: Possible mutagen
Tetratogenic Effects: no data
SECTION 12: Ecological Information
Ecological Information: Harmful to aquatic organisms. May cause long-term adverse effects in the aquatic environment.
SECTION 13: Disposal Considerations
This material and its container must be disposed of as hazardous waste according to local, state and federal
Disposal:
regulations.
SECTION 14: Transportation
Shipping Name (CFR): Non-hazardous
Hazard Class (CFR): NA
Additional Hazard Class (CFR): NA
Packaging Group (CFR): NA
UN ID Number (CFR): NA
Shipping Name (IATA): Non-hazardous
Hazard Class (IATA): NA
Additional Hazard Class (IATA): NA
Packaging Group (IATA): NA
UN ID Number (IATA): NA
SECTION 15: Regulatory Information
TSCA: Listed in the TSCA inventory.
SARA (Title 313): Title compound: see category code N096 for reporting.
Second Ingredient: none
SECTION 16 - ADDITIONAL INFORMATION
N/A
