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[Chemical Knowledge]：Properties and Uses of Yellow Phosphorus

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Yellow phosphorus is a very important raw material for chemical production, and its properties and uses are very extensive. This article will detail the properties and uses of yellow phosphorus.

1. the nature of yellow phosphorus

yellow phosphorus is a non-metallic element, chemical symbol P, atomic number 15. At room temperature, yellow phosphorus is a solid with a silvery white luster, but it becomes a liquid at high temperatures. The density of yellow phosphorus is about 1.82g/cm³, the melting point is 44.1 ℃, the boiling point is 280 ℃, and the ignition point is 30 ℃. Yellow phosphorus is insoluble in water, but can be dissolved in nitric acid, sulfuric acid and other acidic solutions. The chemical properties of

yellow phosphorus are very active and can react with oxygen, halogen, metal, etc. In the air, yellow phosphorus reacts with oxygen to produce phosphorus pentoxide, which is a white smoke with a strong pungent odor. In aqueous solution, yellow phosphorus can react with acid to form the corresponding phosphate.

2. the use of yellow phosphorus

1. Preparation of phosphoric acid and phosphate

of yellow phosphorus is an important raw material for the preparation of phosphoric acid and phosphate. Phosphoric acid is a widely used chemical raw material, which can be used to produce fertilizers, food additives, detergents and other products. Phosphate can be used in water treatment, metal processing, medicine and other fields.

2. Production of Phosphide

Yellow phosphorus can also react with metals to produce the corresponding phosphide. These phosphides have excellent wear resistance, corrosion resistance and high temperature resistance, and can be used to manufacture high-temperature alloys, cutting tools, wear-resistant parts, etc.

3. Making matches and fireworks

yellow phosphorus has a low ignition point and can ignite spontaneously after friction or heating, so it can be used to make matches and fireworks.

4. Preparation of Semiconductor Material

yellow phosphorus can be used to prepare semiconductor materials, such as gallium phosphide, indium phosphide, etc. These materials have a wide range of applications in electronic devices, optoelectronic devices and other fields.

In short, yellow phosphorus, as an important raw material for chemical production, has been widely used in various fields. Because of its unique chemical properties, yellow phosphorus has become an indispensable component in the production of many chemical products.

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