China clay as a soft cream colour material which is used for various applications in the paper, paint, rubber, ink, leather industries. China clay is a natural product consisting essentially of hydrated aluminium silicate in the form of dry powder. PHYSICAL PROPERTIES• Appearance : Cream Color Powder• Specific Gravity : 2.570grm/cc• Oil absorption : 25 to 40%• Loss on ignition : 13.90%• Matter soluble in HCL : 0.06%• Iron=0.10% • pH(of aqueous extract) : 5.0 to 6.5% CHEMICAL PROPERTIES• Silica as Si02 : 45.17%• Ferric Oxide as Fe203 : 0.10%• Alumina as Al203 : 32.00%• Titanium Dioxide as Ti02 : 0.50%• Magnesium Oxide as MgO : 0.12%• Sulphur Trioxide as SO3 : 0.09%• Calcium Oxide as CaO: 0.22%
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