... , pH regulating agent or supplement of magnesium element in food.... Physicochemical Properties: White amorphous powder, nontoxic, odorless, stable in the ... ship and boiler manufacture. And it also can be used to manufacture high-grade glass articles, magnesium salt, pigment, paint and chemicals for ... , etc. Processing Method:Brine, Soda Method, Ammonium Bicarbonate Method MgCO3, Food Grade