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Magnesium Carbonate is an inorganic salt which finds application for various purposes including fireproofing, flooring, cosmetics, and dusting powder. Having chemical formula MgCO3, it has molecular weight of 84.3139 g/mol and density of 2.958 g/cm3 in anhydrous form. This compound is also used as filler material and smoke suppressant in plastics and as reinforcing agent for neoprene rubber. It shows melting point of 350 degrees Celsius with low water solubility. With E number E504, Magnesium Carbonate is utilized as food additive and possesses laxative property. It is also used as antacid in table salt with ability to keep it free flowing in nature.