Calcium sulfate is an inorganic chemical compound that is normally found in three forms named as anhydrous (Anhydrite), dihydrate (Gypsum), and hemihydrate (Plaster of Paris). Anhydrite is a colorless, but inert pigment which is served as a paper filler. Calcium sulfate dihydrate aids in the manufacture of Portland cement. Gypsum works as a pigment in paints, enamels, glazes, and paper. Plaster of Paris is utilized for wall plaster, moldings, and statuary. Its forms are white solids. They are barely soluble in water. Plaster of Paris is a Hemi-hydrate of calcium sulfate obtained from gypsum.

The particle size of this calcium salt is 0.2 micrometers. It is an odorless, white powder. It is a monoclinic or rhombic crystalline solid. Crystals sometimes have a blue, gray, or reddish tinge. It is a hygroscopic compound. Insoluble anhydrite form has the same crystal structure as mineral anhydrite and soluble anhydrite is obtained in granular form it has indices of refraction: 1.569, 1.575, 1.613. this solid compound has a high affinity with water.

CAS NO :- 7778-18-9

USES AND APPLICATIONS FOR CALCIUM SULPHATE

Various applications are given below: –

• It serves as a firming agent.
• It functions as a flour treatment agent and sequestrant.
• It is used as an opacifying agent and pearlescent.
• It is utilized as a soil conditioner.
• It is used in the paper industry.
• Calcium Sulphate is utilized in tofu as a coagulant.
• It also functions as a moisture indicator.