Calcium Chromate (Calcium Chromium Oxide) (CaCrO4)-Powder

Characteristic

Calcium chromate (CaCrO₄) is a bright yellow solid. It normally occurs as the dihydrate, although the very rarely natural (mineral) form, known as chromatite, is anhydrous. Very toxic.

Chemical formula：CaCrO₄

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)

Solubility in water：anhydrous   4.5 g/100 mL (0 °C)   2.25 g/100 mL (20 °C)

                                 dihydrate   16.3 g/100mL (20 °C)    18.2 g/100mL (40 °C)

Solubility：soluble in acid

practically insoluble in alcohol

Crystal structure：monoclinic

Application

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

CaCrO4.pdf