Chromium trioxide

• Catalog No.: Chromium_trioxide
• CAS Number: 1333-82-0
• M. F.: CrO3
• M. W.: 99.9943

SYNONYMS

• IUPAC name: trioxochromium
• IUPAC Traditional name: chromium trioxide
• Synonyms: chromium(VI) oxide; anhydride; Chromic anhydride; chromic acie; chromic acid (misnomer)

DATABASE IDS

• Wikipedia Title: Chromium_trioxide
• CAS Number: 1333-82-0
• PubChem CID: 14915
• Unique Ingredient Identifier: 8LV49809UC
• CHEBI ID: 48240
• Chemspider ID: 14212

PROPERTIES

• Apperance: dark red granular solid ; deliquescent
• Boiling Point: 251°C (decomposes)
• Std enthalpy of formation: -579 kJ·mol^-1
• Density: 2.70 g/cm^3 (20 °C)
• Melting Point: 197°C
• Std molar entropy: 72 J·mol^-1·K^-1
• Odor: odorless
• Solubility: 61.7 g/100 mL (0 °C) ; 63 g/100 mL (25 °C) ; 67.45 g/100 mL (100 °C) in water
• Solubility: soluble in sulfuric acid, nitric acid, ethyl alcohol, ethyl ether, acetic acid, acetone
• EU Index: 024-001-00-0
• European Hazard Symbols: Oxidizer (O)
• European Hazard Symbols: Carc. Cat. 1
• European Hazard Symbols: Muta. Cat. 2
• European Hazard Symbols: Repr. Cat. 3
• European Hazard Symbols: Very toxic (T+)
• European Hazard Symbols: Dangerous for the environment (N)
• LD50: 80 mg/kg
• NFPA704:
  

  1

  3

  1

  OX
• Risk Statements: R45, R46, R9, R24/25, R26, R35, R42/43, R48/23, R62, R50/53
• RTECS: GB6650000
• Safety Statements: S53, S45, S60, S61
• UN Number: 1463