12039-79-1

Synonym:Tantalum disilicide

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Section 2: Composition and Information on Ingredients
IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL)
Title compound12039-79-1100%10mg/m3(Ta)5mg/m3(Ta)

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Section 3: Hazards Identification
Emergency Overview:May be irritating to skin, eyes and mucous membranes.
Primary Routes of Exposure:Ingestion, inhalation.
Eye Contact:May cause slight to mild irritation of the eyes.
Skin Contact:May cause slight to mild irritation of the skin.
Inhalation:Do not breathe dust. Dust may be irritating to the nose, mucous membranes and respiratory tract.
Ingestion:No information is available on the physiological effects of ingestion.
Acute Health Affects:Dust may be irritating to the nose, mucous membranes and respiratory tract.
Chronic Health Affects:No information available on long-term chronic effects.
NTP:No
IARC:No
OSHA:No

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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 in
Inhalation:
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.

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SECTION 5: Fire Fighting Measures
Flash Point:no data
Autoignition Temperature:no data
Explosion Limits:no data
Extinguishing Medium:dry chemical, carbon dioxide, or foam.
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 andIf involved in a fire this material may emit irritating dusts.
Decomposion Products:
Unusual Fire or Explosion Hazards: No unusual fire or explosion hazard.

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SECTION 6: Accidental Release Measures
Spill and Leak Procedures:Sweep up the material and dispose of properly.

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SECTION 7: Handling and Storage
Handling and Storage:Store the material in a sealed container.

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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:Material may form a fine dust. If possible, handle the material in an efficient fume hood.
If in form of fine dust and ventilation is not available a respirator should be worn. The use of respirators
Respirator:
requires a 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.

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SECTION 9: Physical and Chemical Properties
Color and Form:-325 mesh gray pwdr. (avg. 10 microns or less)
Molecular Weight:237.12
Melting Point:2200°
Boiling Point:no data
Vapor Pressure:not applicable
Specific Gravity:9.14
Odor:none
Solubility in Water:insoluble

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SECTION 10: Stability and Reactivity
Stability:air and moisture stable
Hazardous Polymerization:No hazardous polymerization.
Conditions to Avoid:formation of a fine dust
Incompatibility:mineral acids
Decomposition Products:none

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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

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SECTION 12: Ecological Information
Ecological Information:No information available

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SECTION 13: Disposal Considerations
Disposal:Dispose of according to local, state and federal regulations.

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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

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SECTION 15: Regulatory Information
TSCA:Listed in the TSCA inventory.
SARA (Title 313):Title compound not listed.
Second Ingredient:none

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SECTION 16 - ADDITIONAL INFORMATION
N/A