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[Chemical Knowledge]：Properties and Uses of Zinc Chloride

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Zinc chloride is an important raw material for chemical production, which has a wide range of properties and uses. This article will detail the properties of zinc chloride, production methods and applications in different fields.

1. the nature of zinc chloride

zinc chloride is a colorless, transparent, crystalline solid, with strong hygroscopicity. It is soluble in water, but also soluble in ethanol, methanol, acetone and other organic solvents. Zinc chloride is very deliquescent in air, so it needs to be kept dry during storage and use.

zinc chloride has high chemical reactivity and can react with a variety of metals, non-metals, acids, alkalis and other substances. In addition, zinc chloride also has good thermal stability and corrosion resistance.

2. zinc chloride production methods

zinc chloride can be produced by a variety of methods, of which the common ones are the following:

1. Acidolysis: zinc oxide or zinc carbonate reacts with hydrochloric acid to produce zinc chloride and water.
2. Metal zinc and hydrochloric acid reaction method: the metal zinc is directly added to hydrochloric acid, and the reaction generates zinc chloride and hydrogen.
3. Ammonium chloride method: zinc oxide and ammonium chloride are mixed and heated to generate zinc chloride, ammonia gas and water. In the actual production process of

, the appropriate production method can be selected according to factors such as the source of raw materials and production costs.

3. the use of zinc chloride

zinc chloride in the field of chemical production raw materials has a wide range of uses, the following list of several main aspects:

1. catalyst: zinc chloride can be used as a catalyst for many chemical reactions, such as esterification reaction, condensation reaction.
2. Desiccant: Using the hygroscopicity of zinc chloride, it can be used as a desiccant to remove moisture in gas or liquid.
3. Plating solution: Zinc chloride can be used to prepare electroplating solution, which is deposited on the metal surface during the electroplating process to improve the corrosion resistance and appearance quality of the metal.
4. Preservative: Zinc chloride can be used as a preservative for wood, leather and other materials to extend its service life.

In short, zinc chloride plays an important role in the field of chemical production raw materials. By understanding its properties, production methods and applications in different fields, we can better play the role of zinc chloride and promote the development of chemical industry.

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