Calcium Chromate
Other names Calcium chromate (VI)
Calcium monochromate
Calcium Chrome Yellow
C. I. Pigment Yellow 33
Yellow Ultramarine
CAS number 13765-19-0
RTECS number GB2750000
Molecular formula CaCrO4
Molar mass 156.08 g/mol
Appearance Bright yellow powder
Solubility in water slight to none
Crystal structure monoclinic
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox references


Calcium chromate is a bright yellow powder. It normally occurs as a dihydrate. When the hydrate is heated, it will lose water at 200C. Calcium chromate reacts with organic matter or reducing agents to form chromium(III). Calcium chromate 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.


Calcium chromate is a skin and eye irritant; it can also affect the respiratory tract, immune system, liver, and kidneys; calcium chromate is considered a human carcinogen.


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