Section 1: Product Identification
Chemical Name: Ammonium tetrathiotungstate (VI), 99% (99.9+%-W)
CAS Registry Number: 13862-78-7
Formula: (NH4)2WS4
EINECS Number: none
Chemical Family: metal tungstate
Synonym: Ammonium thiotungstate (VI)
Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title compound 13862-78-7 100% 1g/m3 (as W - soluble) no data
Section 3: Hazards Identification
Emergency Overview: Dust is irritating to eyes, skin and respiratory tract. May be harmful if swallowed.
Primary Routes of Exposure: Ingestion, Inhalation of dust.
Eye Contact: Irritating to eyes. May cause redness and pain.
Skin Contact: Mildly irritating to skin. May cause itching and redness.
Inhalation: Inhalation of dust can lead to irritation of the respiratory tract, causing coughing and sore throat.
Ingestion: No information on the physiological effects of ingestion.
Acute Health Affects: Irritating to skin, eyes and respiratory tract.
Chronic Health Affects: No information available on long-term chronic effects.
NTP: No
IARC: No
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: none
Explosion Limits: none
Extinguishing Medium: None. Material is non-combustible.
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, choking fumes of sulfur dioxide may form.
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 powdered sodium carbonate or ground limestone and swept up.
SECTION 7: Handling and Storage
Handling and Storage: Store the material in a tightly sealed container in a cool, dry place.
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 protective gloves and clothing.
Ventilation: Material may form a fine dust. If possible, handle the material in an efficient fume hood.
If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator
Respirator:
Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation: Material may form a fine dust. 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: yellow to orange xtl.
Molecular Weight: 348.18
Melting Point: no data
Boiling Point: no data
Vapor Pressure: not applicable
Specific Gravity: no data
Odor: rotten egg odor
Solubility in Water: 1g/15cc (turbid solution)
SECTION 10: Stability and Reactivity
Stability: air and moisture stable
Hazardous Polymerization: no hazardous polymerization
Conditions to Avoid: reaction with mineral acids
Incompatibility: Strong oxidizing agents and mineral acids
Decomposition Products: ammonia, nitrogen oxides, sulfur dioxide and tungsten compounds.
SECTION 11: Toxicological Information
RTECS Data: No information available in the RTECS files.
Carcinogenic Effects: no data
Mutagenic Effects: no data
Tetratogenic Effects: no data
SECTION 12: Ecological Information
Ecological Information: No information available
SECTION 13: Disposal Considerations
Disposal: Dispose of according to local, state and federal 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: Not listed in the TSCA inventory
SARA (Title 313): Title compound not listed
Second Ingredient: none
SECTION 16 - ADDITIONAL INFORMATION
N/A
Xi:
