Zinc Chloride (CAS 7646-85-7) is a white, crystalline, hygroscopic inorganic salt that is highly soluble in water and alcohol and acts as a strong Lewis acid; it is used in galvanizing fluxes and soldering, in textile processing, as a dehydrating agent and catalyst, and as a wood preservative. It is a strong Lewis acid and an efficient catalyst in many organic transformations.
Typical Properties
| Molecular formula | Cl2Zn |
|---|---|
| Molecular weight | 136.3 g/mol |
| Form | crystalline |
| Color | white |
| Odor | wh. cubic cryst., odorless |
| Melting point | 290 °C |
| Boiling point | 732 °C |
| Density | 2.907 g/cm³ @ Temp: 25 °C |
| Water solubility | 432 g/100 mL (25 °C) |
| Flash point | 732°C |
| pH | 5 (100g/l, H2O, 20°C) |
| GHS signal word | Danger · Corrosive, Acute toxicity, Irritant / harmful, Health hazard, Environmental hazard |
| HS code | 28273600 |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Zinc Chloride
Applications
Used in galvanizing fluxes, soldering, and textile processing. In chemicals, it serves as a dehydrating agent, catalyst, and wood preservative. It also finds use in activated carbon production and battery electrolytes.
Safety & Risks
Corrosive and harmful by ingestion or inhalation. Avoid contact with metals, moisture, and oxidizers. Use in closed systems with PPE.
Packaging
Supplied in 25 kg PE-lined drums or 200 kg containers. Store tightly closed in dry conditions, away from acids and bases.