Tags: Chemical Compound, Chemical Substance.
Calcium sulfate (or calcium sulphate) is a common laboratory and industrial chemical. In the form of γ-anhydrite (the nearly anhydrous form) it is used as a desiccant. It is also used as a coagulant in products like tofu. In the natural state unrefined calcium sulfate is a translucent crystalline white rock. When sold as a color-indicating variant under the name Drierite it appears blue or pink due to impregnation with Cobalt(II) chloride which functions as a moisture indicator.
