Calcium chromate

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Calcium Chromate
Calcium chromate.svg
Calcium chromate
Calcium chromate dihydrate.svg
Calcium chromate dihydrate
CAS number 13765-19-0 YesY
PubChem 26264
ChemSpider 24471 YesY
EC number 237-66-8
RTECS number GB2750000
Jmol-3D images Image 1
Molecular formula CaCrO4
Molar mass 156.072 g/mol
Appearance bright yellow powder
Density 3.12 g/cm3
Melting point 2710 °C
Solubility in water anhydrous
4.5 g/100 mL (0 °C)
2.25 g/100 mL (20 °C)
16.3 g/100mL (20 °C)
18.2 g/100mL (40 °C)
Solubility soluble in acid
practically insoluble in alcohol
Crystal structure monoclinic
Related compounds
Other anions calcium dichromate
Other cations Beryllium chromate
Magnesium chromate
Strontium chromate
Barium chromate
Radium chromate
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Calcium chromate (CaCrO4) is a bright yellow solid. It normally occurs as the dihydrate.


Calcium chromate loses water at 200 °C. It reacts with organic matter or reducing agents to form chromium(III). The solid will react explosively with hydrazine. If mixed with boron and ignited, calcium chromate will burn violently.[1]


It is used as a pigment, a corrosion inhibitor, and in electroplating, photochemical processing, and industrial waste treatment.