Magnesium carbonate MgCO₃ 3H₂O chemical formula, molecular weight 135.38. Colorless a small needle-like crystals shiny, 3.04g/cm³ density and form small balls or clusters of small corporations, in the air gradually weathered. Heat to 100 ° C and CO₂ that LOCA, the goods together with boiling water can be lost when carbon dioxide, insoluble in water. For magnesium salt manufacturers, the pharmaceutical industry, the High glass manufacturing. Use basic magnesium carbonate heated to 150 ~ 220 ° C leads to dry carbon dioxide, until Generation and white loose powder into
constant weight, or in the goods.