We, produce high quarity Activited Clay, the spec as following. Typical chemical and physical property A. Bleaching Power (260C, lovibon 5, 25 inc) 2, 0 B. Pree moisture (105C, 3hour) , % we < 10 C. Bulk Density 0. 45 D. Ph (2% Suspension) 5, 5 E. Acidity 0, 2 Sieve Analysis Passing 100 Mesh (150 micron) , % wt 98 Passing 200 Mesh (75 micron) , % wt 93 Passing 325 Mesh (45 micron) , % wt 71 Chemical Analysis Expressed as percentage of oxides by weight Silicon dioxide (SiO2) 73, 45 Alumunium Trioxide (Al2O3) 13, 25 Potassium Oxide (K2O) 0, 35 Calsium Oxide (CaO) 1, 56 Magnesium Oxide (MgO) 1, 44 Sodium Oxide (Na2O) 0, 17 Loss on Ignition 7, 85 If you are interested in our product please don't haste to contact us.