Zinc chloride
CAS 7646-85-7
EC 231-592-0
Formula Cl2Zn
MW 136.3 g/mol
Salts & Minerals Water TreatmentPulp & PaperTextile, Leather & PaperPharmaceuticals & HealthcarePersonal Care & Cosmetics Preservation & BiocideCatalysis
Description
Zinc chloride (CAS 7646-85-7, EC 231-592-0, formula Cl2Zn) is an inorganic salt available under trade designations including Knittex ZH and NSC 529648, and commonly abbreviated as ZnCl2. It carries no assigned E-code and is classified within the Salts & Minerals category.
In water treatment, zinc chloride acts as a biocide by disrupting microbial cell membranes at controlled dosage levels. Textile and leather processors apply it as a catalyst in finishing reactions, where its Lewis acid character activates cross-linking agents to improve fabric dimensional stability. Personal care formulators incorporate it as an antimicrobial skin conditioner in oral hygiene and topical products.
Zinc chloride is supplied in technical and pharmaceutical grades, with Ph.Eur. and FCC specifications available to meet pharmaceutical and food-contact requirements. The substance is registered under REACH and classified accordingly. Standard packaging includes 25 kg bags and bulk quantities, with HS code 28273600 applicable for import and export documentation.
In water treatment, zinc chloride acts as a biocide by disrupting microbial cell membranes at controlled dosage levels. Textile and leather processors apply it as a catalyst in finishing reactions, where its Lewis acid character activates cross-linking agents to improve fabric dimensional stability. Personal care formulators incorporate it as an antimicrobial skin conditioner in oral hygiene and topical products.
Zinc chloride is supplied in technical and pharmaceutical grades, with Ph.Eur. and FCC specifications available to meet pharmaceutical and food-contact requirements. The substance is registered under REACH and classified accordingly. Standard packaging includes 25 kg bags and bulk quantities, with HS code 28273600 applicable for import and export documentation.
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)
Danger GHS05 GHS07 GHS09 GHS08 GHS06
H
H302H310H314H318H330H332H335H341H361H370H372H400H410
P
P203P260P261P262P264P270P271P273P280P284P316P317P318P319P320P321P330P363P391P405P501P264+P265P301+P317P302+P352P304+P340P308+P316P361+P364P403+P233P301+P330+P331P302+P361+P354P305+P354+P338
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 |
Other Names
dichlorozincZnCl₂ZnCl2Z 00148VTE 1LKnittex ZH
Related Products
Raw Materials
Derivatives
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