HS CODE 25202010
Other names: Plaster of Paris, Drierite, Gypsum
Calcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO4 and related hydrates. In the form of γ-anhydrite (the anhydrous form), it is used as a desiccant. One particular hydrate is better known as plaster of Paris, and another occurs naturally as the mineral gypsum. It has many uses in industry. All forms are white solids that are poorly soluble in water. Calcium sulfate causes permanent hardness in water
Calcium Sulphate is an odorless, white powder or colorless, crystalline solid. Crystals sometimes have ablue, gray or reddish tinge or can be brick red. Density: 2.96 g cm-3.
- Its major use is in the manufacture of Plaster of Paris. Due to its ability to be moulded in the paste form on applying water to the powdered form of Calcium Sulphate.
- Calcium Sulphate is used in tofu as a coagulant.
- The compound was used to make sulphuric acid before the 1970’s.
- Used as a moisture indicator.