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393703

Sigma-Aldrich

Chromium(III) oxide

powder, ≥98%

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

≥98%

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 a chromium complex in which the chromium ion is in +3 oxidation state. The synthesis of its sub-micron powder has been reported.† The IR and Raman spectra of chromium (III) oxide have been studied.† The impact of adding lysozyme on the stability of chromium (III) oxide (Cr2O3) suspension has been evaluated.†

Application

Chromium (III) oxide may be used in the following processes:
  • To modify carbon paste electrodes for optimizing its ability to detect nitric oxide.
  • Preparation of Ni+Cr2O3 composite coatings.
  • Formation of the ternary oxide, CrVMoO7 by solid-state reaction which may be employed in selective oxidation reactions.
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)

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Amperometric Nitric Oxide Sensor Based on Carbon Paste Electrode Modified with Chromium (III) Oxide.
Berisha LS, et al.
Sensors & Transducers Journal, 184(1), 1726-5479 (2015)
The Hydrogen Evolution Reaction on Ni Electrode Material Modified with Molybdenum (IV) Oxide and Chromium (III) Oxide Powders.
Popczyk M and Losiewicz B.
Solid State Phenomena, 228 (2015)
Crystal Structure and Raman Spectroscopy of FeVMoO7 and CrVMoO7 with Mo=O Double Bonds.
Wang, X. et al.
Inorganic Chemistry, 37(13), 3252-3252 (1998)
Poornima Vajpayee et al.
Journal of biomedical nanotechnology, 7(1), 205-206 (2011-04-14)
In this study, seeds of Triticum aestivum L. (Poaceae) were exposed to 0-100 microg/mL chromium oxide nanoparticles (Cr2O3, Nps) to study the phytotoxic effects on seed germination and seedling growth. It has been observed that 25-100 microg/mL Cr2O3, Nps inhibited
Selvam Sangeetha et al.
Colloids and surfaces. B, Biointerfaces, 100, 36-41 (2012-07-07)
Stabilization of collagen for various applications employs chemicals such as aldehydes, metal ions, polyphenols, etc. Stability against enzymatic, thermal and mechanical degradation is required for a range of biomedical applications. The premise of this research is to explore the use

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