1,2-Dichlorobenzene

1,2-Dichlorobenzene, also known as ortho-dichlorobenzene, is a chemical compound with the formula C₆H₄Cl₂. It is one of three isomers of dichlorobenzene, the others being 1,3-Dichlorobenzene and 1,4-Dichlorobenzene.

Properties

1,2-Dichlorobenzene is a colorless liquid with a pleasant, aromatic odor. It is slightly soluble in water but miscible with most organic solvents. The compound has a melting point of -17 °C and a boiling point of 180 °C. It is denser than water, with a density of 1.30 g/cm³.

Production

1,2-Dichlorobenzene is produced by the direct chlorination of benzene in the presence of a catalyst. The process yields a mixture of the three isomers, which are then separated by distillation.

Uses

1,2-Dichlorobenzene is used primarily as a solvent and as an intermediate in the production of other chemicals. It is also used in the manufacture of herbicides, insecticides, and dyes. Additionally, it serves as a degreasing agent and is used in the treatment of wool.

Health and Safety

Exposure to 1,2-dichlorobenzene can occur through inhalation, ingestion, or skin contact. It can cause irritation to the eyes, skin, and respiratory tract. Prolonged exposure may lead to more serious health effects, including liver and kidney damage. It is important to handle this chemical with appropriate safety measures, including the use of personal protective equipment.

Environmental Impact

1,2-Dichlorobenzene is considered a persistent organic pollutant. It can accumulate in the environment and pose risks to aquatic life. Efforts to minimize its release into the environment are important to reduce its ecological impact.

Also see

• 1,3-Dichlorobenzene
• 1,4-Dichlorobenzene
• Chlorobenzene
• Benzene
• Organic chemistry