Appearance: White powder
Moisture: 2.0%max
Insolubles of HCl: 0.10% max
CaO: 0.43% max
MgO: 41.0% min
Loss of burning: 54-58%
Chlorid(as Cl): 0.10% max
Fe: 0.02% max
Mn: 0.004% max
Sulfate: (as SO4): 0.10% max
Sieve residue(100um-200um): 0.025% max
Bulkdensity: 0.12g/ml min

Packing: Net each in 25kg plastic woven bag , lined with PE bag .

Usage: In manufacture of magnesium, magnesium oxide, fireproof, paint, ink, pottery, glass, toothpaste, rubber, pigment, lately 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 to high temperature.