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1308-38-9 - Chromium(III) oxide, Puratronic®, 99.97% (metals basis) - 10688 - Alfa Aesar

10688 Chromium(III) oxide, Puratronic®, 99.97% (metals basis)

CAS Number
1308-38-9
Synonyms

Size Price ($) Quantity Availability
5g 38.70
25g 128.00
100g 363.00
500g 1407.00
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Chromium(III) oxide, Puratronic®, 99.97% (metals basis)

MDL
MFCD00010949
EINECS
215-160-9

Chemical Properties

Formula
Cr2O3
Formula Weight
151.99
Form
-22 Mesh Powder
Melting point
2435°
Boiling Point
3000°
Density
5.22
Refractive Index
2.551
Solubility
Insoluble in water, alcohol, acetone, alkalies and acids.

Applications

Also known as green compound for buffing and polishing, it can be used as abrasives. Apart from being used as a precursor to the magnetic pigment viz., chromium dioxide, it is used in inks, glasses, and pigments (viridian). They are employed as plating agents and surface treating agents. It is a catalyst in the Phillips process of manufacture of high density polythene.

Notes

Hygroscopic. Stored in a tightly closed container. On heating it becomes brown, while on cooling it turns dark green in color.

Literature References

Zhang, D.; Li, X.; Qin, B.; Li, X.; Guo, X.; Lai, C. Fabrication of Chromium (III) Oxide (Cr2O3) Coating by Electrophoretic Deposition. J. Am. Ceramic Soc. 2014, 97 (11), 3413-3417.

Lennartson, A. The colours of chromium. Nat. Chem. 2014, 6, 942.

Wiśniewska, M.; Szewczuk-Karpisz, K. Removal possibilities of colloidal chromium (III) oxide from water using polyacrylic acid. Environ. Sci. Pollut. Res. Int. 2013, 20 (6), 3657-3669.

GHS Hazard and Precautionary Statements

Hazard Statements: H302-H332-H317

Harmful if swallowed. Harmful if inhaled. May cause an allergic skin reaction.

Precautionary Statements: P261-P280g-P304+P340-P301+P312a-P363-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF SWALLOWED: Wash contaminated clothing before reuse. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Merck
14,2234
Harmonized Tariff Code
2819.90
TSCA
Yes
RTECS
GB6475000

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