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[Chemical Knowledge]：How to distinguish between vinyl chloride, allyl chloride and neoprene?

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Vinyl chloride, allyl chloride and chloroprene are common chemicals that play an important role in industrial production and daily life. However, due to the differences in their chemical structures and properties, it is necessary to take corresponding means to distinguish them. This article will introduce several common methods to help you better distinguish these three chemicals.

1. Appearance and physical properties
vinyl chloride is a colorless and transparent liquid with a pungent odor; allyl chloride is a colorless liquid with an odor similar to ethylene; chloroprene is a colorless and transparent liquid with a pungent odor. In terms of appearance and odor, the difference between these three chemicals is not obvious, so further analysis is required.

2. Chemical properties
The chemical formula of vinyl chloride is C2H3Cl, which is a polar unsaturated compound that can undergo addition reactions and polymerization reactions; the chemical formula of chloropropene is C3H5Cl, which is also an unsaturated compound, but because of its There are two carbon-carbon bonds in the molecule, the reactivity is weaker than that of vinyl chloride; the chemical formula of chloroprene is C4H7Cl, which is an unsaturated compound with weak reactivity. Through the analysis of chemical properties, the three chemicals can be better distinguished.

3. Use Scenario
Vinyl chloride is mainly used for the preparation of allyl chloride, vinyl acetate fiber, etc.; allyl chloride is used for the production of acrylonitrile, acrylate and other compounds; chloroprene is mainly used for the production of synthetic rubber. Depending on the usage scenario, their possible nature can also be inferred.

In short, there are certain differences in the chemical structure and properties of vinyl chloride, allyl chloride and chloroprene. It can be better distinguished by observing the appearance and odor, chemical properties, and use scenarios. However, in actual operation, caution is still needed to avoid confusion and use, so as to avoid accidents.

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