... :Colorless rhombic crystal,Granule or powder,Granule or powder NAME :ZINC SULPHATE ZnSO4.7H2O QUALITY STANDARD: ZnSO4.7H2O%Zn %As %Pb ... ADDITIVES,ALSO PAPERMAKING INDUSTRY BLEACHING,WOOD PRESERVATIVE,MEDICINES ANDPESTICIDE PRODUCTION ZINC SALT. IF OUR PRODUCT FALL IN YOUR BUSINESS SCOPE,PLS ... DO NOT HESITATE TO CONTACT US.WE CONFIRM PROMPT ANSWER. Zinc sulphate heptahydrate