Mgco3,pharmaceutical grade , find complete details about mgco3,pharmaceutical grade,magnesium carbonate,mgco3,magnesium carbonate hydroxide from carbonate supplier or manufacturer-weifang meltway co., ltd. Dolomite, powder is an anhydrous carbonate mineral composed of calcium magnesium carbonate. dolomite is also used saltwater aquariums to help buffer changes in ph of the water and in the ceramic industry as a glaze ingredient. There are 463 pharmaceutical grade magnesium carbonate suppliers, mainly located in asia. the top supplying countries or regions are china, india, and belgium, which supply 98%, 1%, and 1% of pharmaceutical grade magnesium carbonate respectively. Alibaba offers 57 magnesium carbonate pharma grade products. about 3% of these are auxiliaries and other medicinal chemicals, 1% are anti-allergic agents, and 1% are antibiotic and antimicrobial agents. a wide variety of magnesium carbonate pharma grade options are available to you, such as medicine grade, cosmetic grade, and food grade.