... Standard:HG/T2959-2000,please check the specifications 1.purity:44.1%2.wide application3.with less Heavy metal ... .03moisture ≤31.7l.o.i %54-5855chloride %≤0.1<0.1Fe %≤0.02<0.01Mn %≤0.004<0 ... paint, ink, pottery, glass, toothpaste, rubber, pigment, dately used product industry, also as food additive and anti-acid agent in ... resistant to high temperature. Light magnesium carbonate 44.1%(industrial product)