236470

Chromium(VI) oxide

ACS reagent, ≥98.0%

• Synonym(s): Chromic anhydride
• Empirical Formula (Hill Notation): CrO₃
• CAS Number: 1333-82-0
• Molecular Weight: 99.99
• EC Number: 215-607-8
• MDL number: MFCD00010952
• UNSPSC Code: 12352303
• PubChem Substance ID: 329752434
• NACRES: NB.24

Properties

• grade: ACS reagent
• Assay: ≥98.0%
• form: powder or crystals
• reaction suitability: reagent type: oxidant
• impurities: ≤0.01% insolubles
• pH: <1 (20 °C, 100 g/L)
• mp: 196 °C (dec.) (lit.)
• anion traces: chloride (Cl^-): ≤0.005%; nitrate (NO₃^-): ≤0.05%; sulfate (SO₄^2-): ≤0.005%
• cation traces: Fe, Al, Ba: ≤0.03%; Na: ≤0.2%
• SMILES string: O=[Cr](=O)=O
• InChI: 1S/Cr.3O
• InChI key: WGLPBDUCMAPZCE-UHFFFAOYSA-N

Description

General description

Chromium(VI) oxide is an oxidizing reagent for the oxidation of carbon-hydrogen bonds to alcohols, alkylaromatics to ketones and carboxylic acids, alkenes to α, β-unsaturated ketones, arenes to quinones, and alcohols to aldehydes, ketones, acids, and keto acids.

Safety Information

• Pictograms: GHS03,GHS06,GHS08,GHS05,GHS09
• Signal Word: Danger
• Hazard Statements: H271,H301 + H311,H314,H317,H330,H334,H335,H340,H350,H361f,H372,H410
• Precautionary Statements: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1A - Eye Dam. 1 - Muta. 1B - Ox. Sol. 1 - Repr. 2 - Resp. Sens. 1 - Skin Corr. 1A - Skin Sens. 1 - STOT RE 1 Inhalation - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 5.1A - Strongly oxidizing hazardous materials
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable