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[Chemical Knowledge]：Properties and Uses of Ammonium Bifluoride

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Ammonium bifluoride is an important inorganic chemical, widely used in chemical industry, metallurgy, electronics, medicine and other fields. This article will detail the properties and uses of ammonium bifluoride.

1. The properties of ammonium bifluoride

1. Physical properties

Ammonium bifluoride is a white crystalline powder with a strong pungent odor. It is easily soluble in water, and its solubility increases with increasing temperature. Ammonium bifluoride is stable in dry air, but decomposes in humid air to produce ammonia and hydrogen fluoride.

2. chemical properties

ammonium bifluoride in water dissociate ammonium ion and fluoride ion, with strong acidity. It reacts with alkali, metal oxides, etc. to generate the corresponding salts. In addition, ammonium bifluoride is also reductive and can be oxidized by strong oxidants.

2. the use of ammonium bifluoride

1. Glass industry

In the glass industry, ammonium bifluoride is used as a fluorine source for the production of fluorine-containing glass. Fluorine-containing glass has low refractive index and high corrosion resistance, and is widely used in optical instruments, chemical containers and other fields.

2. Ceramic Industry

In the ceramic industry, ammonium bifluoride is used as an additive to improve the density and mechanical properties of ceramics. At the same time, ammonium bifluoride can also reduce the sintering temperature of ceramics and save energy.

3. Metallurgical industry

In the metallurgical industry, ammonium bifluoride is used as a smelting aid for the extraction of metal elements. For example, in the smelting process of bauxite, the addition of ammonium bifluoride can improve the extraction rate of aluminum.

4. Electronic industry

In the electronic industry, ammonium bifluoride is used to prepare electronic grade hydrofluoric acid, which can be used as cleaning agent, etching agent, etc. In addition, ammonium bifluoride can also be used to prepare high-purity fluorides for the production of semiconductors, solar cells, etc.

5.

of the pharmaceutical industry In the pharmaceutical industry, ammonium bifluoride can be used as pharmaceutical raw materials or excipients for the production of antibacterial drugs, antineoplastic drugs and other drugs. For example, ammonium bifluoride can be used to prepare fluorouracil, a commonly used anti-tumor drug.

In short, ammonium bifluoride, as an important inorganic chemical, has a wide range of applications in the field of chemical production raw materials.

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