Magnesium carbonate

Magnesium carbonate heavy, Pharma grade Specification: BP2004 Molecular formula:XMgCO3.yMg(OH)2ZH2O comparatively Molecular weight: 467.63 Performance: Basic magnesium carbonate (heavy) is white the fragile massive carbonate or loose white powder. Odorless, the relative density is 2.2kg. Melting point of 350 °C. Be steady in the air, heated to 700 °C in carbon dioxide. Almost insoluble in water, but in the water caused minor alkaline reaction, do not dissolve in alcohol, acid can be dissolved and foam. Quality standards: Items HG2790 - 1996 Magnesium oxide content (MgO),% 40.0 43.5 Acid insoluble, ≤% 0.05 Arsenic (As of), ≤% 0.0003 Calcium oxide (CaO), ≤% 0.6 Heavy metals (Pb dollars), ≤% 0.002 Lead, ≤% 0.001 Soluble salt, ≤% 1 Use: Alkalizer; desiccant, color fixative, carrier, the free flow of flour treatment agent; nutritional supplements; PH regulator, processing aid, the release agent. .