Property, value Sio2, 45% to 48% Al2o3, 33% to 39% Fe2o3, below 1.5% Tio2, below 0.5% Cao, below 1% Mgo, below 0.5% Loi, 10% to 13% Acid insoluble, 97.5% Ph, 8.1 B.D., 0.5 gm/cc Oil absorption, 39.5 ml/100gm Whiteness, 83% to 88% Plasticity, 35 Shrinkage, 8-10 Container of china clay lumps
