Specification : Purity : 99.6% min. Sulphate : 0.08% max. Heavy Metals(Pb) : 0.001% max. Ferrous (Fe) : 0.0015% max. Chloride : 0.003% max. Ignition Residue : 0.08% max. Usage : Used in Metallurgy industry, light industry, dyeing and printing industry, organic synthetic and other aspects and so on. Packing : In 25kg plastic woven bag.