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[Chemical Knowledge]：Properties and Uses of Chloroacetic Acid (Sulfur Method)

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Chloroacetic acid (sulfur method) in the chemical production of raw materials in the field of nature and use

Chloroacetic acid is an important organic chemical raw materials, has a wide range of uses. Among them, the sulfur method is a common method for the production of chloroacetic acid. This article will detail the properties and uses of chloroacetic acid (sulfur method).

1. the properties of chloroacetic acid (sulfur method)

1. Physical properties
chloroacetic acid is a colorless or slightly yellow transparent liquid with a pungent odor. It is insoluble in water, but miscible with organic solvents such as ethanol and ether. Chloroacetic acid has a high boiling point of 186~188 ℃ and a melting point of -11.5 ℃.

2. chemical properties
chloroacetic acid molecules contain carboxyl groups and chlorine atoms, so it has strong reactivity. It can react with alcohols, amines, esters and other compounds to produce the corresponding derivatives. In addition, chloroacetic acid is acidic and can be neutralized with alkali.

2. the use of chloroacetic acid (sulfur method)

chloroacetic acid has a wide range of uses in the chemical industry, mainly for the production of various derivatives and intermediates. The following are the main uses of chloroacetic acid:

1. Production of pesticides and pharmaceutical intermediates
Chloroacetic acid can be used as pesticides and pharmaceutical intermediates for the production of fungicides, herbicides and pharmaceutical raw materials. For example, chloroacetic acid can be reacted with aniline to give chloroacetanilide, an important pesticide intermediate that can be used in the production of fungicides and herbicides.

2. Production of Dye and Pigment Intermediates
Chloroacetic acid can be used to produce intermediates for dyes and pigments. For example, it reacts with phenol to form phenyl chloroacetate, which can be further reacted to form various dyes and pigments.

3. Production of plastic and rubber additives
Chloroacetic acid can be used as an additive for plastics and rubber to improve the processing performance and physical properties of materials. For example, chloroacetic acid can be used to produce plasticizers and flame retardants, among others.

4. Production of Other Organic Compound
In addition to the above uses, chloroacetic acid can also be used to produce other organic compounds, such as acetyl chloride, diethyl malonate, etc.

In conclusion, chloroacetic acid (sulfur method), as an important organic chemical raw material, has a wide range of uses in the field of chemical production raw materials.

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