Density And Specific Gravity: Density refers back to the mass per device volume of a substance, even though specific gravity compares a mineral's density on the density of drinking water. Gypsum employs include things like: manufacture of wallboard, cement, plaster of Paris, soil conditioning, a hardening retarder in portland cement. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050