... price 4)Cu>25%, Pb<10ppm, As<5ppm Copper Sulfate 98% Chemical name: copper sulfate pentahydrate(Other names: Blue vitriol, Blue store ... .0004%0.0004%Packing: 25kg/pp bag or per customer's request, each container can load 22-25tons.Usage: (1) ... industry (3) Chemical industry: Used in the manufacture of copper salt leaching, copper chloride, cuprous chloride and cuprous oxide, etc. (4) Dyestuff ...