Molecular formula :
nature : CaSO4 white crystals. Density 2.964. 1450 ° C melting point. There dihydrate CaSO4 2H2O water and half-CaSO4 1/2H2O. Former as gypsum or PLASTER STONE, the latter known as gypsum burning (see the two). Do not dissolve in water. Mainly used for polishing powder, white paint pigments, paper fillers, gas desiccant, and for agriculture, metallurgy and so on. General output from the natural, phosphate industry and certain other industrial byproducts.
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