International Chemical Safety Cards

CHROMIUM ICSC: 0029

CHROMIUM
Chrome
(powder)
Cr (metal)
Atomic mass: 52.0
CAS # 7440-47-3
RTECS # GB4200000
ICSC # 0029
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 STORAGE PACKAGING & LABELLING
    Vacuum spilled material. Carefully collect remainder, then remove to safe place (extra personal protection: P2 filter respirator for harmful particles).
    		Fireproof. Separated from strong oxidants.

    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0029 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

    International Chemical Safety Cards

    CHROMIUM ICSC: 0029

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    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 (OELs):
     TLV: ppm; 0.5 mg/m3 (as TWA) (ACGIH 1994-1995).
    OSHA PEL: TWA 1 mg/m3 See Appendix C *Note: The PEL also applies to insoluble chromium salts.
    NIOSH REL: TWA 0.5 mg/m3 See Appendix C
    NIOSH IDLH: 250 mg/m3 (as Cr)


    		ROUTES OF EXPOSURE:
     The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

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

    EFFECTS OF SHORT-TERM EXPOSURE:

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
     Repeated or prolonged contact may cause skin sensitization.
    PHYSICAL
    PROPERTIES
    Boiling point: 2642°C
    Melting point: 1900°C
    		 Relative density (water = 1): 7.14
    Solubility in water: none
    ENVIRONMENTAL
    DATA
    N O T E S
    Explosive limits are unknown in literature. Depending on the degree of exposure, periodic medical examination is indicated.
    ADDITIONAL INFORMATION


    ICSC: 0029 CHROMIUM
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and IDLH values.