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675644

Sigma-Aldrich

Chromium(VI) oxide

99.99% trace metals basis

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Synonym(s):
Chromic anhydride
Empirical Formula (Hill Notation):
CrO3
CAS Number:
Molecular Weight:
99.99
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

assay

99.99% trace metals basis

form

powder or flakes

reaction suitability

reagent type: oxidant

mp

196 °C (dec.) (lit.)

application(s)

battery manufacturing

SMILES string

O=[Cr](=O)=O

InChI

1S/Cr.3O

InChI key

WGLPBDUCMAPZCE-UHFFFAOYSA-N

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1 of 4

This Item
2364701.00229232653
vibrant-m

675644

Chromium(VI) oxide

-
vibrant-m

236470

Chromium(VI) oxide

Essential Grade
vibrant-m

1.00229

Chromium(VI) oxide

-
vibrant-m

232653

Chromium(VI) oxide

-
assay

99.99% trace metals basis

assay

≥98.0%

assay

≥99.0% (iodometric)

assay

99.9% trace metals basis

mp

196 °C (dec.) (lit.)

mp

196 °C (dec.) (lit.)

mp

197 °C

mp

196 °C (dec.) (lit.)

reaction suitability

reagent type: oxidant

reaction suitability

reagent type: oxidant

reaction suitability

-

reaction suitability

-

application(s)

battery manufacturing

application(s)

-

application(s)

-

application(s)

-

Quality Level

200

Quality Level

200

Quality Level

300

Quality Level

100

General description

Chromium(VI) oxide (CrO3) is a hexavalent chromium that is majorly used as an oxidizing agent. It oxidizes the C-H bonds in the aromatic rings to form benzoic acid from alkyl benzene. It can be prepared by adding concentrated sulphuric acid in potassium dichromate.

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_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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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.
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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.
S Kondo et al.
European journal of biochemistry, 200(3), 689-698 (1991-09-15)
The chemical structure of the saccharide portion of Vibrio parahaemolyticus serotype 012 lipopolysaccharide was studied. Using chemical degradation and modification, as well as methylation analysis in combination with GLC-MS, laser-desorption mass spectrometry and 1H-NMR and 13C-NMR spectroscopy, the carbohydrate backbone
Adam Szelag et al.
Polish journal of pharmacology, 55(6), 1097-1103 (2004-01-20)
Hexavalent chromium compounds exhibit higher toxicity than its trivalent compounds since chromium ions in the +6 oxidation state easily cross biological membranes. It has recently been proposed that substances reducing chromium ions from the +6 to the less toxic +3

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