Zinc chloride solution is widely used as a flux in soldering and metal surface treatment, helping to remove oxides and promote better metal joining. It is effective in galvanizing processes and enhances the corrosion resistance of metal coatings. In organic synthesis, it acts as a Lewis acid catalyst for reactions such as Friedel-Crafts acylation and the conversion of alcohols to alkyl chlorides. The solution also finds use in the textile industry for fabric treatment and as a fireproofing agent for wood and other materials. Additionally, it serves in laboratories for dehydrating agents and in some medicinal formulations as a topical antiseptic or astringent.