chromium trioxide

CAS No.: 1333-82-0
Formula: CrO3
Exact Mass: 99.92530
Molecular Weight: 99.99430
PSA: 51.21000
LogP: -0.35640
chromium trioxide 1333-82-0 MSDS

Section 1: Product Identification
   Chemical Name:       Chromium (VI) oxide, 99.5%    
   CAS Registry Number:       1333-82-0    
   Formula:       CrO3    
   EINECS Number:       215-607-8    
   Chemical Family:       metal oxide    
   Synonym:       Chromic anhydride, Chromium trioxide, chromia    

Section 2: Composition and Information on Ingredients
   Ingredient       CAS Number       Percent       ACGIH (TWA)       OSHA (PEL)    
   Title Compound       1333-82-0       100%       0.05mg/m3       0.1mg/10m3    

Section 3: Hazards Identification
   Toxic by inhalation, in contact with skin and if swallowed. Corrosive to skin, eyes, mucous membrane of nose
   Emergency Overview:
   and mouth. May cause cancer by inhalation and heritable genetic damage..
   Primary Routes of Exposure:       Ingestion, inhalation, skin    
   Eye Contact:       Causes severe burning of the eyes    
   Skin Contact:       Causes severe burns of the skin. Toxic through skin contact.    
   Inhalation:       Toxic through inhalation. Causes inflammation and ulceration of the respiratory tract.    
   Toxic through ingestion. Ingestion may lead to dizziness, abdominal cramps, vomiting, bloody diarrhea,
   weakness, shock, and convulsions.
   Toxic by inhalation, in contact with skin and if swallowed. Corrosive to skin, eyes, and respiratory system and
   Acute Health Affects:
   when ingested
   Cancer hazard. May cause cancer through inhalation. May cause heritable genetic damage. May cause
   Chronic Health Affects:
   dermatitis, ulceration of the respiratory tract, acute hepatitis, kidney damage, and conjunctivitis.
   NTP:       yes    
   IARC:       Yes    
   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
   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
   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    
   The dust is highly toxic and may support combustion of combustible dusts. Use water (minimum amt) to avoid
   Special Fire Fighting Procedures:
   hazards, but not to introduce toxic soluble hexavalent chromium to groundwater.
   Hazardous Combustion and       none    
   Decomposion Products:
   Unusual Fire or Explosion Hazards: The product can act as an oxidizer towards combustibles.

SECTION 6: Accidental Release Measures
   Spill and Leak Procedures:       Small spills can be mixed with vermiculite or sodium carbonate and swept up. Do not mix with combustibles.    

SECTION 7: Handling and Storage
   Handling and Storage:       Store 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 clothing and gloves.    
   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
   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:       red xtl.    
   Molecular Weight:       99.99    
   Melting Point:       196°    
   Boiling Point:       no data    
   Vapor Pressure:       no data    
   Specific Gravity:       2.7    
   Odor:       none    
   Solubility in Water:       very soluble    

SECTION 10: Stability and Reactivity
   Stability:       moisture sensitive solid    
   Hazardous Polymerization:       no hazardous polymerization    
   Conditions to Avoid:       Do not mix or heat with combustible materials.    
   Incompatibility:       reducing agents, organic matter, phosphorus, sulfur, active metals and halogens    
   Decomposition Products:       none    

SECTION 11: Toxicological Information
   Inhalation (human); TCLo:110 ug/m3. Oral (rat); LD50:80 mg/kg. Administration onto the skin (rat); LDLo:55
   mg/kg. Intraperitoneal (rat); LD50:58400 ug/kg. Intravenous (rat); LD50:9260 ug/kg. Oral (mouse); LD50:127
   mg/kg. Intraperitoneal (mouse); LD50:14 mg/kg. Subcutaneous (mouse); LDLo:20 mg/kg. Intravenous
   RTECS Data:
   (mouse); LD50:17100 ug/kg. Inhalation (rat); TCLo:29 ug/m3/20H/90D-I. Inhalation (human); TCLo:110
   ug/m3/3Y-C. Inhalation (mouse); TCLo:3480 ug/m3/2H/1Y-I. Intravenous (hamster); TDLo:5 mg/kg. Human
   Fibroblast; Morphological transformation:100 nmol/L. Human Leukocyte; Cytogenetic analysis:2 mg/L.
   Carcinogenic Effects:       Tumorigen    
   Mutagenic Effects:       Mutagen    
   Tetratogenic Effects:       Human reproductive effector    

SECTION 12: Ecological Information
   Avoid release into the environment. Very toxic to aquatic organisms. May cause long-term adverse effects in
   Ecological Information:
   the aquatic environment.

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

SECTION 14: Transportation
   Shipping Name (CFR):       Chromium trioxide, anhydrous    
   Hazard Class (CFR):       5.1    
   Additional Hazard Class (CFR):       8    
   Packaging Group (CFR):       II    
   UN ID Number (CFR):       UN# 1463    
   Shipping Name (IATA):       Chromium trioxide, anhydrous    
   Hazard Class (IATA):       5.1    
   Additional Hazard Class (IATA):       8    
   Packaging Group (IATA):       II    
   UN ID Number (IATA):       UN# 1463    

SECTION 15: Regulatory Information
   TSCA:       Listed in the TSCA inventory.    
   SARA (Title 313):       Title compound: See Category Code N090 for reporting.    
   Second Ingredient:       none    


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