Zinc chloride
Description
Zinc chloride (CAS 7646-85-7) is an inorganic salt used across industrial manufacturing as a flux agent, catalyst, and antimicrobial preservative. Its high solubility and reactivity with metal oxides make it a practical choice for processes requiring surface activation.
In textile and paper manufacturing, these solutions are used to activate and mercerize fibers, improving dye uptake and dimensional stability in finished goods. It functions as a Lewis acid catalyst in organic synthesis, facilitating Friedel-Crafts alkylations.
This chemical is essential in reactions where a strong electrophilic promoter is required. Water treatment operations use it as a coagulation aid and biocide to control microbial growth in industrial cooling systems and process water.
In leather processing, it serves as a preservative and tanning auxiliary, helping to stabilize hides during intermediate processing stages. This versatility makes it a staple in heavy industrial applications and specialized chemical manufacturing.
The product is supplied as anhydrous powder, granules, and concentrated aqueous solution, with solution concentrations typically ranging from 50% to 70% by weight. This variety allows for precise dosing in diverse manufacturing environments.
Standard grades include technical, pharmaceutical (USP/BP), and reagent-grade material to meet the specifications of different end markets. These quality standards ensure the material is suitable for its intended industrial or medical use.
Bulk quantities are available for industrial buyers, with smaller packaged formats supplied for laboratory and pharmaceutical procurement. We ensure consistent supply chains for all grades of this essential inorganic compound.
Physical Properties
| Melting Point | 290 °C |
| Boiling Point | 732 °C |
| Density | 2.907 g/cm³ @ Temp: 25 °C |
| Flash Point | 732°C |
| Appearance | White, granular, deliquescent crystals or crystalline powder. A 10% solution is acid to litmus. Soluble in water, alcohol, glycerol, and ether. |
| Color | white |
| Odor | wh. cubic cryst., odorless |
| Form | crystalline |
| Water Solubility | 432 g/100 mL (25 ºC) |
| Vapor Pressure | 1 mm Hg ( 428 °C) |
| pH | 5 (100g/l, H2O, 20℃) |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 28273600 |
| UN Number | 2924 |
| ADR Class | 3 |
| Packing Group | I |
| Storage Class | 8B - Non-combustible corrosive hazardous materials |
| WGK (Germany) | 2 |
Documentation
Other Names
ZnCl₂|ZnCl2|zinc(II) chloride|butter of zinc|Zintrace
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