Zinc Chloride
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Molecular Formula: ZnCl₂
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Molecular Weight: 136.3
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CAS NO.: 7646-85-7
Description
Product name:
Zinc Chloride
Specification:
| Index | Standard Indicators |
| Total Zinc ( measured in ZnCl2) % | ≥98.0 |
| Acid insoluble matter % | ≤0.02 |
| Basic salt (measured in ZnO)% | ≤1.8 |
| Sulfate (measured in SO4) % | ≤0.01 |
| Iron (Fe )% | ≤0.0005 |
| Lead (Pb) % | ≤0.0003 |
| Barium (Ba)% | ≤0.05 |
| Calcium (Ca)% | ≤0.2 |
| Moisture% | <0.5 |
| Appearance | White powder |
Properties:
A white, deliquescent crystalline solid, zinc chloride (ZnCl₂) has a density of 2.907 g/cm³ and a molar mass of 136.315 g/mol, melting at 290 °C and boiling at 732 °C; it is odorless, highly soluble in water (432 g per 100 mL at 25 °C) and also dissolves readily in ethanol, glycerol and acetone.As a Lewis acid, anhydrous zinc chloride forms complexes with many bases and releases acidic, corrosive fumes upon hydrolysis or heating.
Application:
In industry, zinc chloride serves as a versatile reagent and additive: it functions as a mordant in textile processing to improve dye uptake and colorfastness, and as a flux—often mixed with ammonium chloride—in soldering and galvanizing to cleanse metal surfaces and promote strong joints. It is widely employed as a catalyst in organic syntheses (for example, in the production of benzaldehyde from toluene), as a dehydrating and wood-preserving agent, and in specialty applications such as battery electrolytes, metal plating and smoke-screen formulations
Package and Storage:
25KG/Bags.Stored in a cool, dry, well-ventilated warehouse at ambient temperature (ideally 2–40 °C).Away from moisture and incompatible materials (strong bases, oxidizers, metals), with containers kept tightly closed.





