the properties of Chromic Hydroxide

CAS Registry Number: 1308-14-1

CAS Name: Chromium hydroxide

Additional Names: chromic oxide gel; chromic oxide, hydrous

Molecular Formula: CrH3O3

Molecular Weight: 103.02

Percent Composition: Cr 50.47%, H 2.94%, O 46.59%

Line Formula: Cr(OH)3

Literature References: Occurs alone as hydrates. Prepn: Ruthroff, Inorg. Synth. 2, 190 (1946); Hein, Herzog in Handbook of Preparative Inorganic Chemistry vol. 2, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1965) pp 1345-1346.

Derivative Type: Trihydrate

Molecular Formula: Cr(OH)3.3H2O

Molecular Weight: 157.06

Percent Composition: Cr 33.11%, O 61.12%, H 5.78%

Chromic Hydroxide Properties: Or Cr2O3.9H2O, blue-green powder. Practically insol in water. Sol in dil mineral acids if afresh prepd, giving dejected or blooming soln; becomes insol in acids on aging. Cr(OH)3.nH2O, shining, vitrous, jet-black particles. Useful as agitator in dehydrogenation of alcohols and paraffins, hydrogenation of olefins.

Chromic Hydroxide is used as pigment; in tanning industry; as mordant; as agitator for amoebic reactions.


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from: chromate dichromate