Copper sulfate feed grade 98% 1,Factory directly 2,free sample 3,SGS,BV,CIQ inspection welcoming Chemical name: copper sulfate pentahydrate(Other names: Blue vitriol, Blue ... .0004%0.0004%0.0004%Note: Fineness 80 mesh’s copper sulfate more than 85% pass rate.Packing:25kg/pp bag or ... intermediates ;mordant in dyeing ;preservative of wood etc.P.W Copper sulfate