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Calcium Chromate

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Title: Calcium Chromate  
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Subject: Calcium sulfite, Calcium bisulfite, Sodium chromate, Calcium silicide, Calcium hexaboride
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Calcium Chromate

Calcium Chromate

Calcium chromate

Calcium chromate dihydrate
IUPAC name
Calcium dioxido-dioxo-chromium
Other names
Calcium chromate (VI)
Calcium monochromate
Calcium Chrome Yellow
C. I. Pigment Yellow 33
Yellow Ultramarine
ChemSpider  YesY
EC number 237-66-8
Jmol-3D images Image
RTECS number GB2750000
Molar mass 156.072 g/mol
Appearance bright yellow powder
Density 3.12 g/cm3
Melting point 2,710 °C (4,910 °F; 2,980 K)
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
Related compounds
Other anions
calcium dichromate
Other cations
Beryllium chromate
Magnesium chromate
Strontium chromate
Barium chromate
Radium chromate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
 YesY  (: YesY/N?)

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.


  1. ^ Occupational Safety And Health Guideline For Calcium Chromate
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