Ammonium chloride
Chemical compound
Ammonium Chloride[edit | edit source]
Ammonium chloride is an inorganic compound with the formula NH₄Cl. It is a white crystalline salt that is highly soluble in water, producing a mildly acidic solution. Ammonium chloride is commonly used in fertilizers, as a flavoring agent in some types of licorice, and in the textile and leather industries.
Chemical Properties[edit | edit source]
Ammonium chloride is composed of ammonium (NH₄⁺) and chloride (Cl⁻) ions. It is a product of the reaction between ammonia (NH₃) and hydrochloric acid (HCl). The compound is known for its ability to sublimate, meaning it can transition from a solid to a gas without passing through a liquid phase under certain conditions.
Production[edit | edit source]
File:08. Директна синтеза на амониум хлорид.webm Ammonium chloride is produced on a large scale by combining ammonia and hydrogen chloride. This reaction can be represented by the equation:
NH₃ + HCl → NH₄Cl
This process is often carried out in a controlled environment to ensure the purity of the product. Ammonium chloride can also be obtained as a byproduct of the Solvay process, which is used to produce sodium carbonate.
Uses[edit | edit source]
Ammonium chloride has a variety of applications:
- Fertilizers: It is used as a nitrogen source in fertilizers, particularly for rice and wheat crops.
- Food Industry: In the food industry, ammonium chloride is used as a flavoring agent in some types of licorice.
- Textile and Leather: It is used in the textile and leather industries for dyeing, tanning, and printing.
- Metalwork: Ammonium chloride is used as a flux in preparing metals to be tin coated, galvanized, or soldered.
Health and Safety[edit | edit source]
Ammonium chloride is generally considered safe when handled properly. However, exposure to high concentrations can cause irritation to the eyes, skin, and respiratory tract. It is important to use appropriate protective equipment when handling the compound.
Decomposition[edit | edit source]
Upon heating, ammonium chloride decomposes into ammonia and hydrogen chloride gases. This decomposition is reversible, and the gases can recombine to form ammonium chloride upon cooling.
Crystallography[edit | edit source]
Ammonium chloride crystallizes in a cubic lattice structure. The crystals are typically white and can be grown from an aqueous solution by evaporation.
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