| Description | Very Light, white powder, odourless 15 gms. occupies about a 180 ml. | | Solubility | Practically insoluble in water, dissolves in dilute acids with strong effervescence. | | Standards | Light Magnesium Carbonate contains the equivalent of not less than 40% and not more than 45.0% of Magnesium | | Arsenic | Not more than 2 ppm | | Heavy Metals | Not more than 20 ppm | | Chloride | Not more than 0.1% | | Sulphate | Not more than 0.3% | | Calcium | Not more than 0.75% | | Copper | Nil, complies test | | Iron | Not more than 400 ppm | | Soluble substance | Not more than 1.0% | | Substance insoluble in acetic acid | Not more than 0.05 |
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