... known, are colorless or white and highly soluble in water. ZnCl2 itself is hygroscopic and even deliquescent. Samples ... therefore be protected from sources of moisture, including the water vapor present in ambient air. Zinc chloride finds wide ... Carbon, Washing Coal, Welding Flux, Paper-Making, Metal Finishing Chemicals, Dehydrating Agent, Condensing Agent, Wood Preservation etc.; Hazard Symbols: ...