Magnesium carbonate, MgCO3 (archaic name magnesia alba), is an inorganic salt that is a white solid. Several hydrated and basic forms of magnesium carbonate also exist as minerals.
Physical Properties : NATURE Basic APPEARANCE White, Very Fine Powder TASTE Taste Less ODOR Odorless PH 10.0 + – 0.5 BULK DENSITY LOOSE 0.08 gm/cm3 BULK DENSITY PACK 0.10 gm/cm3 Particle Size -300 Mesh Size(50 Microns) MOISTURE < 5% Max Chemical Properties : MgO%(Assay) >41% on dry wt. basis CHLORIDE 0.14% + -0.01 % SULPHATE 0.2% IRON 50ppm CALCIUM 0.05% HEAVY METALS 10ppm SOLUBILITY Insoluble in water , 5% solution in dilute HCL is clear