... single crystal or amorphism powder with no smell and no poison, nearly tasteless, it is stable ... 1.02%(15o C), easily soluble in acid and ammonium salt solution. It reacts with acid ... to 300o C, it decomposes into carbon dioxide and magnesium oxide. 2. Application: Mainly used as ... used as ancillary substance and filler; It can be used as adiabatic, heatproof, fire proof and heat preservation material. ...