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Chromium Trioxide

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Chromium Trioxide molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 7 grades and pack sizes of Chromium Trioxide (CAS 1333-82-0). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS1333-82-0
Molecular formulaCrO3
Molecular weight99.99 g/mol
IUPAC nametrioxochromium
Synonymstrioxochromium · Chromic anhydride · Chromium(VI) oxide · CrO3 · Chromtrioxid · Monochromium trioxide
Safety & Hazards (GHS) Danger
Oxidizing Oxidizing Corrosive Corrosive Acute toxic Acute toxic Health hazard Health hazard Environmental hazard Environmental hazard
  • H271 May cause fire or explosion; strong Oxidizer
  • H301 Toxic if swallowed
  • H314 Causes severe skin burns and eye damage
  • H317 May cause an allergic skin reaction
  • H330 Fatal if inhaled
  • H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
  • H340 May cause genetic defects
  • H350 May cause cancer
  • H361 Suspected of damaging fertility or the unborn child
  • H372 Causes damage to organs through prolonged or repeated exposure
  • H400 Very toxic to aquatic life
  • H410 Very toxic to aquatic life with long lasting effects

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma CHROMIUM(VI) OXIDE, 98+%, A.C.S. REAGENT 236470-100G
236470-500G		 Request Quote
Sigma CHROMIUM(VI) OXIDE, 99.99% TRACE METAL 675644-25G
675644-5G		 Request Quote
Sigma CHROMIUM(VI) OXIDE, REAGENTPLUS(R), 99.9 232653-100G
232653-1KG
232653-2.5KG		 Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.