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[Chemical Knowledge]：Properties and Uses of Formaldehyde

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Formaldehyde is a colorless, pungent odor gas, common in the field of chemical production raw materials. It has many important properties and uses, which will be described in detail below.

1. the nature of formaldehyde

1. Physical properties
formaldehyde is a colorless gas with a strong pungent odor. Its boiling point is -19.5 ℃, melting point is -92 ℃, soluble in water and ethanol and other organic solvents.

2. chemical properties of
formaldehyde has a strong reduction, easy to be oxidized to formic acid. At the same time, it can also occur with many compounds, such as addition reaction, condensation reaction. Formaldehyde can also react with proteins to denature them.

2. the use of formaldehyde

1. preservatives
formaldehyde can be used as a preservative to prevent the growth of bacteria, mold and other microorganisms. It is often used in wood, paper, leather and other materials of anti-corrosion treatment.

2. Disinfectant
Formaldehyde can be used for disinfection, especially in medical and hygiene products. It can kill many bacteria and viruses, including influenza virus and HIV.

3. Production
of plastics and synthetic fibers Formaldehyde can be used as one of the raw materials for the production of many plastics and synthetic fibers, such as phenolic plastics, urea-formaldehyde plastics, melamine-formaldehyde resins, etc. These materials have excellent heat resistance, electrical insulation resistance, water resistance and other properties, and are widely used in electrical appliances, automobiles, construction and other fields.

4. Pharmaceutical intermediates
formaldehyde can be used as a pharmaceutical intermediate for the production of many drugs, such as vitamin B6, p-aminobenzoic acid and so on.

In short, formaldehyde has a wide range of uses in the field of chemical production raw materials, but it should be noted that formaldehyde is a toxic and harmful gas, which has a certain impact on human health and the environment. Therefore, in the process of production and use, it is necessary to strictly abide by the relevant safety regulations and operating procedures to ensure the safety of personnel and the environment.

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