Caulim calcinado
Caulim calcinado no pó:
Whiteness: 95%+-1.5, Al2O3: 45%+-1, SiO2: 52%+-1, Fe2O3<0.5%, TiO2<1.1%, CaO<0.3%, MgO<0.2%, K2O<0.05%, Na2O<0.15%, MnO<0.004%, umidade: <=0.5%
Caulim calcinado na protuberância:
Al2O3>=45%, Fe2O3<=0.4%, B.D.: 2.45, 2.47, 2.50.
Argila crua do caulim:
Al2O3>=35%, Fe2O3<=0.4%, TiO2<=0.50%
China