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CAS Number: 13862-78-7
Product Catalog

74-1000
Ammonium Ammonium tetrathiotungstate(VI), 99% (99.9+%-W)
CAS Number: 13862-78-7
MDL Number: MFCD00061410
Molecular Formula: H8N2S4W
Molecular Weight: 348.18
Chemical Formula: (NH4)2WS4
Color and Form: yellow to orange xtl.
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SECTION 1: Product Identification
Chemical Name: Ammonium tetrathiotungstate (VI), 99% (99.9+%-W)
Product Number: 74-1000
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 Effects: Irritating to skin, eyes and respiratory tract.
Chronic Health Effects: No information available on long-term chronic effects.
NTP: No
IARC: No
OSHA: No
SECTION 4: First Aid Measures
Eye Exposure: Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need assistance in keeping their eye lids open. Get immediate medical attention.
Skin Exposure: Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if irritation persists.
Inhalation: Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Ingestion: Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce 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.
Special Fire Fighting Procedures: If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure self-contained breathing apparatus and full protective clothing.
Hazardous Combustion and Decomposion Products: If involved in a fire, choking fumes of sulfur dioxide may form.
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.
Respirator: If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator Protection Program to be in compliance with 29 CFR 1910.134.
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: soluble
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
Third Ingredient: none
SECTION 16: Other Information
Disclaimer: The information herein is believed to be accurate and reliable as of the date compiled. However, Strem Chemicals, Inc. makes no representation, warranty, or guarantee of any kind with respect to the information contained in this document or any use of the product based on this information.
Preparation Date: 5/23/2004
Revision Date: 12/13/2011

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