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Merck
CN

236470

Chromium(VI) oxide

ACS reagent, ≥98.0%

Synonym(s):

Chromic anhydride

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About This Item

Empirical Formula (Hill Notation):
CrO3
CAS Number:
1333-82-0
Molecular Weight:
99.99
NACRES:
NB.24
PubChem Substance ID:
329752434
UNSPSC Code:
12352303
EC Number:
215-607-8
MDL number:
MFCD00010952
Assay:
≥98.0%
Grade:
ACS reagent
Form:
powder or crystals

Key Documents

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InChI key

WGLPBDUCMAPZCE-UHFFFAOYSA-N

InChI

1S/Cr.3O

SMILES string

O=[Cr](=O)=O

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 (SO42-): ≤0.005%

cation traces

Fe, Al, Ba: ≤0.03%, Na: ≤0.2%

Quality Level

200

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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.

signalword

Danger

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

5.1A - Strongly oxidizing hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ9989
MKCX7023
MKCW6956
MKCS3178
MKCQ2053

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Chromium (VI) Oxide
Freeman F, et al.
e-EROS Encyclopedia of Reagents for Organic Synthesis (2001)
Chromium (VI) Oxide.
Freeman F, et al.
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2008)
Chromium (VI) oxide-catalyzed oxidation of arenes with periodic acid.
Yamazaki S.
Tetrahedron Letters, 42(19), 3355-3357 (2001)
L Vayssieres et al.
Journal of nanoscience and nanotechnology, 1(4), 385-388 (2003-08-14)
We are reporting here on the inexpensive fabrication and optical properties of an iron(III) oxide-chromium(III) oxide nanocomposite thin film of corundum crystal structure. Its novel and unique-designed architecture consists of uniformed, well-defined and oriented nanorods of Hematite (alpha-Fe2O3) of 50
Seongmin Lee et al.
Organic letters, 11(1), 5-8 (2008-12-06)
The C14,15-dihydro-C22,25-epi north unit of cephalostatin 1 has been synthesized in 11 operations from commercially available hecogenin acetate via multiple reductions and oxidations. The key transformations include (i) Cr(VI)-catalyzed E-ring opening, (ii) C17 hydroxylation, and (iii) a base-triggered cyclization cascade.
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