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Sigma-Aldrich

Chromium(III) oxide

powder, 99.9% trace metals basis

Synonym(s):

Chromia

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About This Item

Empirical Formula (Hill Notation):
Cr2O3
CAS Number:
Molecular Weight:
151.99
EC Number:
MDL number:
UNSPSC Code:
12352303
PubChem Substance ID:
NACRES:
NA.55

Quality Level

Assay

99.9% trace metals basis

form

powder

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 is also referred to as chromic oxide. It is commonly employed as a marker in various digestion assays conducted on animals.
Chromium(III) oxide is mainly used as a green pigment in paints, inks and ceramics. On a commercial scale, it is synthesized by the reduction of sodium chromate with sulfur.

Application

Chromium(III) oxide (Cr2O3) has been used as a standard for the determination of chromium content in cattle feces by employing different digestion techniques.1 It has also been employed as a digestibility marker in a study.
Used in a solid-state reaction to form the new ternary oxide, CrVMoO7, which should find application in selective oxidation. Its crystal structure was also determined.
Used in a solid-state reaction to form the new ternary oxide, CrVMoO7, can be used in selective oxidation.

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Chromium Compounds
Anger G, et al.
Ullmann's Encyclopedia of Industrial Chemistry (2000)
Wang, X. et al.
Inorganic Chemistry, 37, 3252-3252 (1998)
C Villaverde et al.
Poultry science, 87(3), 497-505 (2008-02-19)
An experiment was designed to assess the effect of dietary unsaturated fat inclusion level on alpha-tocopherol apparent absorption and deposition in broiler chickens at 2 ages (20 and 39 d). The dietary fat was a mixture of linseed and fish
Noriko Nishino et al.
Physical chemistry chemical physics : PCCP, 14(45), 15840-15848 (2012-10-24)
While many studies of heterogeneous chemistry on Cr(2)O(3) surfaces have focused on its catalytic activity, less is known about chemistry on this surface under atmospheric conditions. We report here studies of the thermal and photochemical reactions of NO(2) on Cr(2)O(3)
S E Dutton et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 23(24), 246005-246005 (2011-06-01)
α-SrCr(2)O(4) has a triangular planar lattice of d(3) Cr(3+) made from edge sharing CrO(6) octahedra; the plane shows a very small orthorhombic distortion from hexagonal symmetry. With a Weiss temperature of - 596 K and a three-dimensional magnetic ordering temperature

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