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CAS Number: 1314-20-1
Product Catalog

90-3500
Thorium › Thorium(IV) oxide (99.99%-Th) PURATREM
CAS Number: 1314-20-1
MDL Number: MFCD00036277
Molecular Formula: O2Th
Molecular Weight: 264.04
Chemical Formula: ThO2
Color and Form: -325 mesh white pwdr.
Note:  

Safety: Hazardous

Physical Characteristics: melting point 3050°C, boiling point 4400°C, density 9.86

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SECTION 1: Product Identification
Chemical Name: Thorium (IV) oxide (99.99%-Th)PURATREM
Product Number: 90-3500
CAS Registry Number: 1314-20-1
Formula: ThO2
EINECS Number: 215-225-1
Chemical Family: metal oxide
Synonym: Thorium dioxide, thoria, thorianite
SECTION 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title Compound 1314-20-1 100 no data no data
SECTION 3: Hazards Identification
Emergency Overview: Toxic by inhalation and if swallowed. May cause cancer
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: Toxic by inhalation. May be irritating to the nose, mucous membranes and respiratory tract.
Ingestion: Toxic if swallowed. Ingestion may lead to vomiting and diarrhea.
Acute Health Effects: Toxic by inhalation and if swallowed. May be irritating to skin, eyes and respiratory tract.
Chronic Health Effects: No information available on long-term chronic effects. Radiation emitted from thorium compounds is suspected to increase the risk of cancer.
NTP: Yes
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: material is non-flammable
Special Fire Fighting Procedures: No special fire-fighting procedures. The material is non-flammable.
Hazardous Combustion and Decomposion Products: no hazardous decomposition 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
Handling and Storage: No special storage conditions.
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 clothing and gloves.
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: -325 mesh white pwdr.
Molecular Weight: 264.04
Melting Point: 3050°C
Boiling Point: 4400°C
Vapor Pressure: no data
Specific Gravity: 9.86
Odor: none
Solubility in Water: insoluble
SECTION 10: Stability and Reactivity
Stability: air and moisture stable solid
Hazardous Polymerization: no hazardous polymerization
Conditions to Avoid: none
Incompatibility: active metals
Decomposition Products: none
SECTION 11: Toxicological Information
RTECS Data: Intratracheal (rat); LD50: >1140 mg/kg. Parenteral (human-woman); TDLo: 1 gm/kg. Unreported (human); TDLo: 2880 mg/kg. Intraarterial (human); TDLo: 490 mg/kg. Intravenous (rat); TDLo: 160 mg/kg. Parenteral (human); TD: 700 mg/kg. Parenteral (human); TD: 1260 mg/kg. Intraarterial (human-woman); TD: 2 gm/kg. Parenteral (human-woman); TD: 2350 mg/kg. Intraarterial (human-man); TD: 1190 mg/kg. Intraarterial (human); TD: 1302 mg/kg.
Carcinogenic Effects: Carcinogen
Mutagenic Effects: No data available
Tetratogenic Effects: No data available
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): Radioactive material, excepted pkg-ltd qty of mat.
Hazard Class (CFR): 7
Additional Hazard Class (CFR): NA
Packaging Group (CFR): NA
UN ID Number (CFR): UN# 2910
Shipping Name (IATA): Radioactive material, excepted pkg-ltd qty of mat.
Hazard Class (IATA): 7
Additional Hazard Class (IATA): See Sub.Sec. 10.5
Packaging Group (IATA): NA
UN ID Number (IATA): UN# 2910
SECTION 15: Regulatory Information
TSCA: Listed in the TSCA inventory.
SARA (Title 313): Reportable under SARA 313.
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: 2/26/2001
Revision Date: 8/16/2011

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