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
