Gypsum Is actually a tender sulfate mineral composed of calcium sulfate dihydrate, Along with the chemical formula CaSO4·2H2O.[4] It is commonly mined and is used being a fertilizer and because the major constituent in several sorts of plaster, drywall and blackboard or sidewalk chalk. The absence of substantial impurities in https://www.propanraya.com/id/produk/eco-gypsum-ee-4050