1,2-Dichlorobenzene, identified by its CAS number 95-50-1, is a chemical compound that holds significant importance across various industrial sectors. Characterized as a colorless transparent liquid, it is primarily recognized for its utility as a precursor in the synthesis of agrochemicals and pharmaceuticals, as well as a specialized industrial solvent. For professionals involved in chemical procurement, R&D, and manufacturing, a thorough understanding of its properties, applications, and safe handling practices is indispensable.

The chemical structure of 1,2-Dichlorobenzene consists of a benzene ring with two chlorine atoms positioned adjacent to each other. This arrangement defines its ortho-isomer status and influences its reactivity. With a molecular weight of approximately 147 g/mol, it exhibits a high boiling point and is miscible with most organic solvents, while showing low solubility in water. These characteristics make it an effective solvent for specific materials, including fullerenes, and a useful component in certain cleaning and degreasing applications, particularly in metallurgy for removing carbon-based contamination.

In the realm of synthesis, 1,2-Dichlorobenzene serves as a crucial intermediate. Its role in the production of other chemicals, such as 1,2-dichloro-4-nitrobenzene, highlights its importance in creating more complex molecules used in pesticides and dyes. The requirement for high purity, typically exceeding 99.0%, is a common standard for these applications, ensuring the integrity of the end products. Suppliers often emphasize low water content (≤0.03%) and controlled acid values as key quality indicators.

Safety considerations are paramount when working with 1,2-Dichlorobenzene. While useful, it is classified as hazardous. Occupational exposure limits, such as Permissible Exposure Limits (PELs) and Recommended Exposure Limits (RELs), are set by regulatory bodies to protect workers. Inhalation of vapors can cause irritation to the respiratory tract, eyes, and skin. Prolonged or repeated exposure may lead to more serious health effects, including potential damage to the liver and kidneys. Therefore, appropriate personal protective equipment (PPE), such as chemical-resistant gloves, safety goggles, and respiratory protection in poorly ventilated areas, is essential. Adequate ventilation is critical in workspaces to maintain exposure levels below recommended limits.

Storage recommendations typically involve keeping the chemical in a cool, dry place to maintain its stability. The product generally has a shelf life of 12 months when properly packaged. For businesses looking to buy 1,2-Dichlorobenzene, sourcing from reputable manufacturers in China or globally ensures access to high-quality material with detailed specifications and safety data sheets (SDS).

In summary, 1,2-Dichlorobenzene is a versatile chemical with vital roles in agrochemical and pharmaceutical synthesis, as well as an industrial solvent. Its valuable properties are matched by the necessity for careful handling and adherence to safety protocols. For any organization involved in its use, partnering with a dependable manufacturer and supplier is key to accessing this important compound effectively and safely.