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CHROMIUM ICSC: 0029
Date of peer-review: October 1994

Chrome
CAS # 7440-47-3 Cr (metal)
RTECS # GB4200000 Atomic mass: 52.0
UN #
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible if in very fine powder. Gives off irritating or toxic fumes (or gases) in a fire.
No open flames if in powder form.
In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.

EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

Inhalation Cough.
Local exhaust or breathing protection.
Fresh air, rest.
Skin Redness.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Redness.
Face shield.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion
Do not eat, drink, or smoke during work.
Rinse mouth.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Vacuum spilled material. Carefully collect remainder, then remove to safe place. (Extra personal protection: P2 filter respirator for harmful particles).
EU Classification
UN Classification

EMERGENCY RESPONSE STORAGE

Fireproof. Separated from strong oxidants.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2001

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CHROMIUM ICSC: 0029
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
STEEL GREY LUTROUS METAL.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
Reacts violently with strong oxidants such as hydrogen peroxide, causing fire and explosion hazard. Reacts with diluted hydrochloric and sulfuric acids. Incompatible with alkalis and alkali carbonates.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.5 mg/m^3 (as TWA) (ACGIH 1994-1995).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization.
PHYSICAL PROPERTIES
Boiling point: 2642C
Melting point: 1900C
Relative density (water = 1): 7.14
Solubility in water: none
ENVIRONMENTAL DATA

NOTES
Explosive limits are unknown in literature. Depending on the degree of exposure, periodic medical examination is indicated.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2001

See Also:
        Chromium (CHEMINFO)
        Chromium (EHC 61, 1988)