... 4 2.Appearance:white powder 3.Application:feed, rubber, surface coating. calcined magnesite powderCAS NO: 1309-48-4Appearance: white powderApplication ... : feed, rubber, surface coating, etc.Magnesite oxide is made from Brucite ore. It ... .Magnesite oxide is widely used in feed, rubber, surface coating, paper making and smelting industries.Purity: 85%-99. ...