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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-Nummer
1308-38-9
Synonyme

Größe Preis ($) Menge Verfügbarkeit
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

Chemische Eigenschaften

Formel
Cr2O3
Molmasse
151.99
Form
-22 Mesh Powder
Schmelzpunkt
2435°
Siedepunkt
3000°
Dichte
5.22
Brechungsindex
2.551
Löslichkeit
Insoluble in water, alcohol, acetone, alkalies and acids.

Anwendungen

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.

Bemerkungen

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

Literaturverweise

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 Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H302-H332-H317

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

Sicherheitshinweise: 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: Call a POISON CENTER/doctor if you feel unwell. Wash contaminated clothing before reuse. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

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

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