Cas No:13717-00-5 Appearance: white powder MF:MgCO3 Used in the manufacture of magnesium, magnesium oxide, fireproof, paint, ink, pottery, glass, toothpaste, rubber, pigment, dately used product industry, also as food additive and anti-acid agent in pharmaceutical industry, as high-quality filler and reinforcement agent of rubber products, as fireproof and thermal insulation materials resistant ...