Magnesium Chromate, MgCrO₄

Magnesium Chromate, MgCrO₄.7H₂O, crystallises in large transparent prisms isomorphous with Epsom salts. It becomes MgCrO₄.H₂O at 130° C. Yellow crystals of MgCrO₄.5H₂O, isomorphous with copper sulphate, were obtained by crystallisation above 30° C. Water partly decomposed them.