Barium chromate is an inorganic compound with the chemical formula BaCrO4. It is a yellow crystalline powder, insoluble in water, combustible when heated, the flame is green, and it is decomposed into BaCr2O4 and Ba3Cr2O6 above 900 °C.  It is mainly used to make pigments, ceramics, glass, safety matches, etc.

Barium chromate is an anti-corrosive jointing compound that inhibits electrolytic corrosion between dissimilar metals. It is often used in the aerospace industry, has low solubility in water and will not erode over time.

Properties

Chemical Formula : BaCrO4

Appearance : Yellow crystalline powder

Melting point : 210 °C (decompose)

Water solubility : Insoluble

Density : 4.5 g/cm³

Synonyms :  lemonchrome, lemonyellow, barytayellow, Lemon chrome, Lemon yellow, Baryta yellow, Barium cromate