Aluminium Sulphate - 15.8-17;no ferrum15.8-17

Physical and Chemical property : melting point： 770℃ soluble in water and not easy to weathering and keeping stable, heating can dehydrate. Al2(SO4)3(high temperature)→Al2O3+sulfur oxides
Appearance: schistose，granulous and powder ,white or grey

Usage: dealing with the water
Characteristics: The price is no expensive and in large dosage. Because there are two styles: iron and no iron in different shape, the client must firstly be asked about iron and shape.