A chemical compound X is prepared by heating gypsum. It is white powder and used as a fire proofing material. Compound X is:

Plaster of Paris is made by heating gypsum (CaSO4·2H2O) to remove water, resulting in a white powder. It is widely used as a fireproofing material because it can withstand high temperatures without burning. Additionally, Plaster of Paris is used in construction for making casts, molds, and decorative elements. Its quick-setting property makes it ideal for various applications in both industry and art.