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Toluene is aromatic hydrocarbons and is found largely in coal tar. It is a light and flammable liquid and is used as a solvent in various industries such as paints and resins.
Polyvinyl chloride (PVC) is a very popular plastic material. In the present situation, it is one of the most valuable products of the petrochemical industry.
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A mixture of the three xylene isomers is widely used as solvent. Mixed xylene usually contains about 40-65% m-xylene and up to 20% each of o-xylene and p-xylene and ethylbenzene.
Benzene is a faded, fragrant and volatile liquid that burns with a yellow flame with soot, and in industrial production, a group of materials such as polystyrene, synthetic rubber, and nylon is used.