Aluminium Silicate Hydrate (Kaolin / China Clay) is a white to off-white fine powder with a molecular weight of ~258 g/mol. It decomposes on heating (no fixed boiling point) and has no sharp melting point. Form: Solid / Powder; Uses: ceramics, paper coating, paints, rubber, cosmetics, pharmaceuticals, and laboratory applications. Available Quantities: 500 g, 5 kg, 25 kg (custom bulk packing available)