Zinc Sulphate 98%min,Zn 35%min Min.Order:1Mt CAS NO: 7446-19-7 Fast shipment! Zinc SulphateMF:ZnSO4.*H2OCAS NO: 7733-02-0Appearance: white powder, granuleZinc sulphate heptahydrateZnSO4.7H2O: 98% min.Zn: 21-22.5% min.As: 0.0005% max. Pb: 0.001% max. Cd: 0.001% max. Fe: 0.005% max.Usage: As feed additive, pesticides and microelement fertilize, producing lithophone, zinc salts ,synthetic fiber etc. ...