Kaolinite Clay

specefication for kaolin total kaolinite: 97% min. aluminium oxide : 37% min. silicon oxide: 46% max. iron oxide : 1.0% max. titanium oxide : 0.30% max. calcium oxide: 0.05% max. sodium oxide: 0.50% max. volatile matters: 1.0% max. water soluble salts: 1.0% max. loi: 15% max. colour: white, whiteness: 65-67 specific gravity: 2.5 to 2.7 oil absorption: 25 to 35. ph of 10% aqueous solution: 7 to 8 shelf life: 5 years.