... , 4:1:5, 4:1:6, 4:1:7, 3:1:3 and 3:1:4. And nontoxic ... it shall resolve and produce water, carbon dioxide and magnesium oxide. Use: Used as high-quality filler and reinforcement agent ... it also can be used to manufacture high-grade glass articles, magnesium salt, pigment, paint and chemicals for daily ... Limestone Carbonization, Soda Method, Ammonium Bicarbonate Method Reagent Grade Magnesium Carbonate