Hydrated Aluminium Silicate is offered with a specific gravity range of 2.58 and 0.20% moisture content. Hydrated Aluminium Silicate is also known as china clay and formed by weathering or hydrothermal alteration of felspathic rocks. Hydrated Aluminium Silicate is offered in white coloured lump form. Hydrated Aluminium Silicate has an oil absorption rate of 32 % and whiteness of 82 %.