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CAS Number: 12143-72-5
Product Catalog

93-7328
Tantalum › Tantalum(IV) sulfide (99.9%-Ta)
CAS Number: 12143-72-5
MDL Number: MFCD00049569
Molecular Formula: S2Ta
Molecular Weight: 245.08
Chemical Formula: TaS2
Color and Form: -325 mesh gray pwdr. (avge. 10 microns or less)
Note:  

Physical Characteristics: melting point > 1300°C

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SECTION 1: Product Identification
Chemical Name: Tantalum (IV) sulfide (99.9%-Ta)
Product Number: 93-7328
CAS Registry Number: 12143-72-5
Formula: TaS2
EINECS Number: 235-265-3
Chemical Family: metal chalcogenides
Synonym: Tantalum disulfide
SECTION 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title Compound 12143-72-5 100 no data no data
SECTION 3: Hazards Identification
Emergency Overview: Irritating to skin, eyes and respiratory tract. Toxic hydrogen sulfide may be released with strong acids.
Primary Routes of Exposure: Ingestion, inhalation, skin
Eye Contact: Causes mild to moderate irritation of the eyes.
Skin Contact: Causes slight irritation of the skin.
Inhalation: Inhalation of dust will lead to irritation of the respiratory tract. Hydrogen sulfide gas, if formed, is poisonous.
Ingestion: No information on the physiological effects of ingestion.
Acute Health Effects: Irritating to skin, eyes and respiratory tract. Hydrogen sulfide, if released, causes nausea, dizziness and pulmonary edema.
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: no data
Explosion Limits: no data
Extinguishing Medium: carbon dioxide or dry powder or foam
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 this material may emit irritating fumes of sulfur dioxide.
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
Handling and Storage: Store in a sealed container. Keep away from heat and moisture.
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.
Respirator: If ventilation is not available a respirator should be worn. The use of a 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: -325 mesh gray pwdr. (avg. 10 microns or less)
Molecular Weight: 245.08
Melting Point: > 1300°C
Boiling Point: no data
Vapor Pressure: no data
Specific Gravity: no data
Odor: odor of sulfur
Solubility in Water: insoluble
SECTION 10: Stability and Reactivity
Stability: air and moisture stable
Hazardous Polymerization: no hazardous polymerization
Conditions to Avoid: contact with air, water, and mineral acids.
Incompatibility: Oxidizing agents, active metals. Reaction with mineral acids can lead to formation of toxic fumes of hydrogen sulfide.
Decomposition Products: hydrogen sulfide, sulfur dioxide, and metal oxides.
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: 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: 10/29/2001
Revision Date: 10/26/2011

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