zinc chloride

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A white, deliquescent crystalline compound, ZnCl₂, used as a wood preservative, a disinfectant, a soldering flux, and for a variety of industrial purposes, including the manufacture of cements and paper parchment.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun inorganic chemistry The zinc salt of hydrochloric acid, ZnCl2, a white crystalline solid with a number of industrial applications.