1,4-Dichlorobenzene

1,4-Dichlorobenzene is a white crystalline solid at room temperature with a characteristic pungent, chlorinated odor and moderate volatility. It is an aromatic organochloride compound, specifically a disubstituted benzene derivative. Industrially, it serves primarily as a chemical intermediate in the synthesis of dyes, pigments, and agrochemicals—including certain herbicides and fungicides—and is used in the production of polyphenylene sulfide (PPS) polymers. Its applications span polymer manufacturing, pesticide formulation, and specialty chemical synthesis, where its thermal stability and reactivity profile support controlled electrophilic substitution reactions.

The compound 1,4-dichlorobenzene is most commonly referred to as para-DCB or p-DCB. It is widely used as a moth killer, in space deodorizers, and in the production of polyphenylene sulfide. It is also used in the manufacture of certain resins, in the pharmaceutical industry, and as a general insecticide in farming. At room temperature, 1,4- dichlorobenzene is a white or colorless crystalline solid with a characteristic penetrating odor. When exposed to air, it is slowly transformed from its solid state into a vapor; the released vapor then acts as a deodorizer and insect killer. It is practically insoluble in water and is soluble in alcohol, acetone, ether, chloroform, carbon disulfide, and benzene. Its chemical formula is C6H4Cl2. There is limited evidence that 1,4-dichlorobenzene can damage a developing fetus. Exposure can damage the lungs, liver, kidneys, and blood cells, causing anemia; it can also cause swelling of the eyes, hands, and feet. It can damage the nervous system, causing weakness, trembling, and numbness in the arms and legs. It may cause a skin allergy, which when developed can cause itching and a skin rash. Higher levels of the chemical in air, such as the levels that are sometimes associated with industrial exposure, can cause headaches, nausea, clumsiness, slurred speech, and dizziness. Levels that would result in death would be associated with an odor so intense that it would be very unpleasant, if not intolerable, and would serve as a danger warning. In industrial situations, workers exposed to 1,4- dichlorobenzene at high levels are usually directed to wear respirators. Workers involved in the production of the chemical may be exposed to concentrations significantly higher than those encountered by the general population. High exposure levels may result from some consumer products of moth repellents and room deodorizers. Approximately 95% of the environmental release of 1,4- dichlorobenzene occurs during its use, rather than during its manufacture or processing.
colourless or white crystals

This chemical is included in Fine Chemicals. See more about what is 1,4-Dichlorobenzene and 1,4-Dichlorobenzene SDS information.

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