Chromium anhydride; Anhydride chromique [French]; Anidride cromica [Italian]; Chrome (trioxyde de) [French]; Chromia (CrO3); Chromic acid, solid; Chromic anhydride; Chromic oxide; Chromic(VI) acid; Chromium oxide; Chromium oxide (Cr4O12); Chromium oxide (CrO3); Chromium trioxide; Chromium(6+) oxide; Chromium(6+) trioxide; Chromium(VI) oxide; Chromsaeureanhydrid [German]; Chromtrioxid [German]; Chroomtrioxyde [Dutch]; Chroomzuuranhydride [Dutch]; Cromo(triossido di) [Italian]; Monochromium trioxide; Puratronic chromium trioxide; Sintered chromium trioxide; [ChemIDplus] UN1463
Chromium Compounds, Inorganic
Dark red to brown crystals, flakes, or powder; [HSDB] Soluble in water; [ACGIH]
Used in chromium plating, copper stripping, and aluminum anodizing; also used to inhibit corrosion, to develop photographs, to purify oil and acetylene, to harden microscopic preparations, and to oxidize organic chemicals; [HSDB] Used in sulfuric acid as a photoresist stripper; [CSH, p. 49] Also used as a wood preservative; [ACGIH]
CrVI compounds are irritants, sensitizers, and may be corrosive to the skin. CrVI compounds are respiratory tract irritants and may cause pulmonary sensitization. CrVI may cause acute tubular necrosis and liver injury. [ATSDR Case Studies] Highly corrosive to skin; [Quick CPC] Chromium trioxide (chromic acid) is a water-soluble hexavalent chromium compounds. A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; May cause skin sensitization, kidney injury, and asthma after prolonged contact; [ICSC] See "Chromium" and linked occupational diseases.
Skin Designation (ACGIH)
0.0002 mg/m3, as Cr(VI), inhalable particulate matter
0.0005 mg/m3, as Cr(VI), inhalable particulate matter
0.005 mg/m3, as Cr(VI)
LC50 (rat) = 167 mg/m3/4 H; [CHEMINFO]
Melting point = 197 degrees C; [HSDB] The Guide from the Emergency Response Guidebook is for "Chromium trioxide, anhydrous."
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion
Occupational diseases associated with exposure to this agent:
Industrial Processes with risk of exposure:
Activities with risk of exposure: