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8.22266

Sigma-Aldrich

Chromium(VI) oxide

for synthesis

Synonym(s):

Chromium(VI) oxide, Chromic anhydride, Chromium trioxide

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About This Item

Empirical Formula (Hill Notation):
CrO3
CAS Number:
1333-82-0
Molecular Weight:
99.99
MDL number:
MFCD00010952
UNSPSC Code:
12352303
EC Index Number:
215-607-8
NACRES:
NA.22

Quality Level

200

form

solid

reaction suitability

reagent type: oxidant

pH

<1 (20 °C, 100 g/L in H2O)

mp

197 °C

density

2.7 g/cm3 at 20 °C

bulk density

900 kg/m3

storage temp.

2-30°C

InChI

1S/Cr.3O

InChI key

WGLPBDUCMAPZCE-UHFFFAOYSA-N

Analysis Note

Assay (iodometric): ≥ 99.0 %
Identity (ICP-OES): passes test

Signal Word

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 Code

5.1A - Strongly oxidizing hazardous materials

WGK

WGK 3

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