Magnesium oxide, or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium. It has an empirical formula of MgO and consists of a lattice of Mg²⁺ ions and O²⁻ ions held together by ionic bonding. Magnesium hydroxide forms in the presence of water , but it can be reversed by heating it to remove moisture.

Magnesium oxide Mainly uses in the food and pharma industry. Magnesium Oxide (MgO) also referred to as magnesia has a wide range of applications across various industries. The largest consumer of MgO is the healthcare industry wherein, chemical companies, pharmaceuticals sector, health supplements, medical procedures and many others utilise its benefits.