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1.02483

Sigma-Aldrich

Chromium(III) oxide

anhydrous, Technipur®

Synonym(s):

Chromic oxide, Chromium sesquioxide, Chromium(3+) oxide, Chromium(III) trioxide, Dichromium trioxide, Trioxochromium, Chromia

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About This Item

Empirical Formula (Hill Notation):
Cr2O3
CAS Number:
1308-38-9
Molecular Weight:
151.99
MDL number:
MFCD00010949
UNSPSC Code:
12352303
NACRES:
NA.21

grade

anhydrous

Quality Level

200

density

5.22 g/cm3

SMILES string

O=[Cr]O[Cr]=O

InChI

1S/2Cr.3O

InChI key

QDOXWKRWXJOMAK-UHFFFAOYSA-N

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General description

Chromium(III) oxide (Cr2O3) is an inorganic compound with wide applications in construction materials, heterogeneous catalysis, enamels, green pigments, plastic, and paints. These listed applications are due to its unique properties like high oxidative resistance and melting temperature. Furthermore, a permanent green coloring in cement is achieved by Cr2O3.

Application

Chromium(III) oxide can be used:
  • To dope TiO2 nanocrystallites photoanodes applicable in dye-sensitized solar cells.
  • As a bulk mediator in the modification of carbon paste electrodes applicable in nitric oxide sensing.
Used in a solid-state reaction to form the new ternary oxide, CrVMoO7, can be used in selective oxidation.

Legal Information

Technipur is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

Certificates of Analysis (COA)

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