... mgco3 powder, used as food additive, pH regulating agent or supplement of magnesium element in food.... Physicochemical Properties: White amorphous ... carbon dioxide while meeting with diluted acid. Heated up to 300'C and above, it shall ... And it also can be used to manufacture high-grade glass articles, magnesium salt, pigment, paint and ... Brine, Soda Method, Ammonium Bicarbonate Method MgCO3, Food Grade