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[Chemical Knowledge]：Properties and uses of paraformaldehyde

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Paraformaldehyde is an important raw material for chemical production and has a wide range of applications. This article will detail the properties and uses of paraformaldehyde. The properties of

1. paraformaldehyde

paraformaldehyde is a white or yellowish amorphous solid with high purity and chemical activity. It has a strong pungent odor, is easily soluble in water, and decomposes into formaldehyde in water. The melting point of paraformaldehyde is low, generally between 60-70 ° C, so it is easier to melt. In addition, paraformaldehyde also has good thermal stability and can remain stable at higher temperatures.

2. paraformaldehyde use

1. disinfectant

paraformaldehyde is widely used as disinfectant, can effectively kill bacteria, viruses and fungi and other microorganisms. In the fields of medical treatment, hygiene and food processing, paraformaldehyde is widely used as disinfectant and preservative to ensure the hygienic quality of products.

2. plastic additive

paraformaldehyde can be used as plastic additives to improve the hardness and strength of plastics and other properties. In PVC, polyethylene and other plastic products, paraformaldehyde is widely used as a plasticizer and stabilizer to improve the performance of plastic products.

3. synthetic resin

paraformaldehyde can also be used to synthesize resin, such as phenolic resin, urea formaldehyde resin. These resins have good water resistance, heat resistance and corrosion resistance, and are widely used in construction, automobile, electrical and other fields.

4. Pesticide

Paraformaldehyde is also used as a pesticide to control pests and diseases. In agricultural production, paraformaldehyde is widely used as a fungicide and insecticide to improve the yield and quality of crops.

In short, as an important raw material for chemical production, paraformaldehyde has a wide range of applications. In the future development, with the progress of science and technology and the continuous expansion of application, the application field of paraformaldehyde will be more extensive.

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