| Identification | Back Directory | [Name]
copper chromate | [CAS]
13548-42-0 | [Synonyms]
COPPER(II)CHROMATE(VI)
Chromic acid (H2CrO4), copper(2+) salt (1:1) | [EINECS(EC#)]
236-922-7 | [Molecular Formula]
CrH2O4.Cu | [MOL File]
13548-42-0.mol | [Molecular Weight]
181.55 |
| Hazard Information | Back Directory | [Chemical Properties]
reddish brown; used as a fungicide, to weatherproof textiles, in epoxy adhesives, and to preserve wood [KIR78] | [Physical properties]
The neutral form is a reddish-brown crystalline solid; decomposes slowly to copper(II) chromite when heated above 400°C; insoluble in water; soluble in acids. The basic chromates are crystals having colors that vary from yellow to chocolate-brown to lilac, depending on their compositions and chromate to hydroxide molar ratios. They lose water when heated at 260°C, are insoluble in water, and are soluble in nitric acid. | [Uses]
It is used in wood preservation and in textile weatherproofing. | [Preparation]
Copper(II) chromate(VI) is a red or reddish-brown, crystalline material prepared by the careful heating of a mixture of copper(II) oxide and chromium(VI) oxide or by reaction of copper(II) oxide with solutions of chromic acid. |
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