Section 1: Product Identification
Chemical Name: Bis(tetramethylcyclopentadienyl)chromium, min. 98%
CAS Registry Number: 82066-37-3
Formula: [(CH3)4C5H]2Cr
EINECS Number: none
Chemical Family: metallocene
Synonym: 1,1',2,2',3,3',4,4'-Octamethylchromocene
Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title compound 82066-37-3 100% 0.5mg/m3 (as Cr) 0.5mg/m3 (as Cr)
Section 3: Hazards Identification
May be irritating to eyes, skin and respiratory tract. Chromium (III), a possible metabolite, has acted as a
Emergency Overview:
tumorigen and mutagen in animal studies.
Primary Routes of Exposure: Ingestion, inhalation of dust.
Eye Contact: May cause slight to mild irritation of the eyes
Skin Contact: May cause slight to mild irritation of the skin.
Inhalation: May be irritating to the nose, mucous membranes and respiratory tract.
Ingestion: No information on the physiological effects of ingestion of this specific compound.
Acute Health Affects: May be irritating to skin, eyes and respiratory tract.
It is possible that prolonged exposure could result in formation of Chromium (III) salts in the human body.
Chronic Health Affects: Although less toxic than Chromium (VI), some animal studies show Chromium (III) to act as a mutagen and
tumorigen.
NTP: Yes
IARC: No
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
Inhalation:
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
Ingestion:
vomiting only if directed by medical personnel.
SECTION 5: Fire Fighting Measures
Flash Point: none
Autoignition Temperature: none
Explosion Limits: none
Extinguishing Medium: carbon dioxide, foam or dry powder
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 and If involved in a fire this material may emit irritating and toxic fumes.
Decomposion Products:
Unusual Fire or Explosion Hazards: Flammable solid.
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
Store in a tightly sealed container. Handle and store under an inert atmosphere of nitrogen or argon.
Handling and Storage:
Exposure to air may result in degradation of the product.
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 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.
SECTION 9: Physical and Chemical Properties
Color and Form: red xtl.
Molecular Weight: 294.40
Melting Point: no data
Boiling Point: no data
Vapor Pressure: no data
Specific Gravity: no data
Odor: none
Solubility in Water: insoluble
SECTION 10: Stability and Reactivity
Stability: air sensitive solid
Hazardous Polymerization: none
Contact with oxygen. Keep away from heat and ignition sources including open flame and electrostatic
Conditions to Avoid:
discharge.
Incompatibility: strong oxidizing agents
Decomposition Products: carbon dioxide, carbon monoxide, organic fumes and chromium oxide.
SECTION 11: Toxicological Information
RTECS Data: No information available from the RTECS files.
Carcinogenic Effects: No data available
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): Flammable solids, Organic, N.O.S.
Hazard Class (CFR): 4.1
Additional Hazard Class (CFR): NA
Packaging Group (CFR): II
UN ID Number (CFR): UN# 1325
Shipping Name (IATA): Flammable solid, Organic, N.O.S.
Hazard Class (IATA): 4.1
Additional Hazard Class (IATA): NA
Packaging Group (IATA): II
UN ID Number (IATA): UN# 1325
SECTION 15: Regulatory Information
TSCA: not listed on the TSCA inventory
SARA (Title 313): Title compound: see Category Code N090 for reporting
Second Ingredient: none
SECTION 16 - ADDITIONAL INFORMATION
N/A
