Used as a flux in soldering and metal surface treatment to remove oxides and prevent corrosion during the process. Commonly applied in the galvanizing industry and for cleaning metal surfaces before welding or coating. Acts as a catalyst or reagent in organic synthesis, especially in reactions involving carbon-carbon bond formation. Employed in the production of dyes, pigments, and other industrial chemicals. Utilized in textile processing for fireproofing and as a weighting agent. Found in some wood preservatives due to its antimicrobial properties. Also used in laboratories for dehydrating agents and as a component in various chemical tests.