Exposed to the air, boiling point 3600, food additives, etc., insoluble in water and ethanol, paint, plastic, easy to absorb water and carbon dioxide, ceramics, medicine, soluble in acid and ammonium salt, melting point 2800, chemical reagent, magnesium oxide has high fire resistance and insulation performance. use Used for rubber, glass, wire, cable dye, tasteless and odorless magnesium oxide Product name Magnesium oxide Molecular formula MgO Nature White light powder