... regulating agent or supplement of magnesium element in food.... Physicochemical Properties: White amorphous powder, nontoxic, ... shows alkalescence. Easily soluble in acid and ammonium salt solution, it shall resolve and release ... it also can be used to manufacture high-grade glass articles, magnesium salt, pigment, paint ... Processing Method:Brine, Soda Method, Ammonium Bicarbonate Method MgCO3, Food Grade