Zinc chloride is the name of chemical compound with the formula ZnCl2 and its hydrates. Zinc chlorides, of which nine crystalline forms are known, are colorless or white and highly soluble in water. ZnCl2 itself is hygroscopic and even deliquescent. Samples should therefore be protected from sources of moisture, including the water vapor present in ambient air. ITEMSINDEXBatteryGradeFirst GradeSecond GradeAssay(ZnCl2)%≥96.095.095.0ZnO %2.02.02.0Sulphate(SO4)%≤0.010.010.05Ba %≤0.10.10.2Fe %≤0.00050.0010.002Pb %≤0.00050.0010.002