1,3-dichlorobenzene

1,3-dichlorobenzene is an organic chemical compound with the molecular formula C6H4Cl2, where two chlorine atoms are attached to a benzene ring at the 1 and 3 positions (meta-dichlorobenzene). This aromatic chlorinated compound has a molecular weight of 147 g/mol and is classified under CAS number 541-73-1. It belongs to the dichlorobenzene family of compounds and is widely used in industrial applications as an intermediate in chemical synthesis.

1,3-dichlorobenzene is a colorless to pale yellow liquid at room temperature with a characteristic aromatic odor. It has a boiling point of approximately 173°C and a melting point around -24°C. The compound is practically insoluble in water but readily soluble in organic solvents such as ethanol, ether, and benzene. It has a density of about 1.29 g/cm³ and exhibits low volatility compared to other chlorinated aromatics.

1,3-dichlorobenzene is primarily used as an intermediate in the production of various chemicals including pesticides, herbicides, and pharmaceuticals. It serves as a precursor in the synthesis of dyes, particularly azo dyes, and is utilized in the manufacturing of specialty chemicals. The compound also finds application as a solvent in certain industrial processes and as a raw material for producing other chlorinated aromatic compounds in the chemical industry.

1,3-dichlorobenzene requires careful handling due to its Acute Tox. 4 classification and GHS07 warning pictogram. Wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Ensure adequate ventilation to prevent vapor accumulation. Avoid skin and eye contact, and prevent inhalation of vapors. Work in well-ventilated areas or under fume hoods, and have emergency eyewash and shower facilities readily available.

1,3-dichlorobenzene should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers away from incompatible materials such as strong oxidizing agents and bases. Store in appropriate chemical storage areas with secondary containment to prevent environmental release. Maintain storage temperatures below 25°C and ensure containers are properly labeled according to CLP regulations.

In case of skin contact with 1,3-dichlorobenzene, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for at least 15 minutes and seek medical attention. If inhaled, move the person to fresh air and monitor breathing. If ingested, do not induce vomiting and seek immediate medical attention while providing safety data sheet information to medical personnel.

1,3-dichlorobenzene must be disposed of as hazardous waste according to local and European waste regulations. Contact licensed hazardous waste disposal companies for proper collection and treatment. Do not discharge into sewers, waterways, or soil due to its Aquatic Chronic 2 classification. Incineration at authorized high-temperature facilities is typically the preferred disposal method. Maintain proper documentation of waste disposal and follow the waste hierarchy principles where possible.

1,3-dichlorobenzene is classified under ADR as Class 6.1 (toxic substances), Packing Group III, requiring specific transport regulations. Use approved packaging materials and ensure proper labeling with GHS07 and GHS09 pictograms plus ADR transport labels. Vehicles must carry appropriate emergency equipment and drivers need ADR training certification. Transport documents must include proper shipping names, hazard classes, and emergency response information according to European dangerous goods transport regulations.

1,3-dichlorobenzene is regulated under European REACH and CLP regulations, requiring registration for import/manufacture above one tonne per year. It is not currently listed as a Substance of Very High Concern (SVHC). The compound must be classified and labeled according to CLP with Warning signal word and appropriate hazard pictograms GHS07 and GHS09. Users must comply with occupational exposure limits and environmental discharge restrictions under various EU directives.

1,3-dichlorobenzene is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. OYSI provides quality chemical products with proper documentation, safety data sheets, and regulatory compliance support. As a professional chemical distributor, OYSI ensures reliable supply chains and technical expertise for industrial applications. Contact OYSI directly for availability, specifications, and delivery options tailored to your specific requirements.