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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

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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Functional pigments from chromium(III) oxide nanoparticles
Sangeetha S, et al.
Dyes and Pigments, 94(3), 548-552 (2012)
Physical properties of anatase TiO2 nanocrystallites: based photoanodes doped with Cr2O3
Abouhaswa AS
Optical and Quantum Electronics, 52 (2020)
Amperometric Nitric Oxide Sensor Based on Carbon Paste Electrode Modified with Chromium (III) Oxide
Berisha LS, et al.
Sensors & Transducers Journal, 184(1), 159-164 (2015)
Original synthesis of chromium (III) oxide nanoparticles
Gibota P and Vidal L
J. Eur. Ceram. Soc., 30(4), 911-915 (2010)

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