The chemical formula of gypsum is CaSO4.2H2O.
Gypsum is a non-toxic mineral. It is a widely used sulphate. Calcium sulphate dihydrate is chemically represented as CaSO4.2H2O. It is made up of water, calcium sulphate, and oxygen. It is useful to animals, humans, plants.
Gypsum rock is found worldwide and deposits extend from Baja, Mexico, across Utah and from southwest Texas to the Niagara River in New York State in North America. Nova Scotia is home to the largest gypsum quarry in the world and is owned by National Gypsum.