... decompose and produce water, carbon dioxide and magnesium oxide.Use: Used as high-quality filler and reinforcement ... And it also can be used to manufacture high-grade glass articles, magnesium salt, pigment, paint and ... It can be used as anti-acid agent in pharmaceutical industry. And also can be used as desiccant, ... : Brine, Soda Method, Ammonium Bicarbonate Method MgCO3, Pharmaceutical Grade