1,2-dichlorobenzene

1,2-dichlorobenzene is an organochlorine compound with the molecular formula C6H4Cl2 and CAS number 95-50-1. This aromatic compound consists of a benzene ring with two chlorine atoms attached to adjacent carbon atoms (ortho position). With a molecular weight of 147 g/mol, it belongs to the dichlorobenzene isomer family and is classified as a hazardous chemical requiring proper handling and safety measures.

1,2-dichlorobenzene is a colorless to pale yellow liquid at room temperature with a characteristic aromatic odor. It has a boiling point of approximately 180°C and a melting point of -17°C. The compound is practically insoluble in water but readily soluble in organic solvents such as alcohol, ether, and benzene. It has a density higher than water and exhibits low volatility at ambient temperatures.

1,2-dichlorobenzene serves primarily as an industrial solvent and chemical intermediate in various manufacturing processes. It is commonly used in the production of dyes, pesticides, and other organic chemicals. The compound also finds applications as a degreasing agent, in metal cleaning operations, and as a process solvent in chemical synthesis. Additionally, it may be used in specialized applications requiring its specific solvent properties.

1,2-dichlorobenzene requires careful handling due to its classification as Acute Tox. 4, Skin Irrit. 2, and Eye Irrit. 2. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Ensure adequate ventilation to prevent inhalation exposure. Avoid direct skin and eye contact, and never eat, drink, or smoke while handling. Work in well-ventilated areas or use local exhaust ventilation systems.

1,2-dichlorobenzene should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, ignition sources, and direct sunlight. Keep containers upright and protected from physical damage. Store separately from incompatible materials such as strong oxidizing agents, strong bases, and reactive metals. Ensure storage areas are equipped with appropriate spill containment measures and maintain temperatures below 25°C when possible.

In case of skin contact with 1,2-dichlorobenzene, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, rinse immediately with plenty of clean water for at least 15 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. Seek medical attention if irritation persists or if symptoms develop. Never induce vomiting if swallowed.

1,2-dichlorobenzene must be disposed of as hazardous waste in accordance with local, national, and international regulations. Never dispose of it down drains, into soil, or with regular waste. Contact licensed hazardous waste disposal companies for proper treatment and disposal. The waste classification includes both toxicity and aquatic environment hazard categories. Ensure proper waste characterization and documentation for regulatory compliance before disposal.

1,2-dichlorobenzene is classified under ADR as Class 6.1 (toxic substances) Packing Group III, indicating moderate toxicity during transport. It must be packaged in UN-approved containers with proper labeling including GHS07 and GHS09 pictograms and 'Warning' signal word. Transport documents must include the proper shipping name, UN number, and hazard class. Vehicles must carry appropriate emergency equipment and drivers require ADR certification for toxic materials.

1,2-dichlorobenzene is subject to various European regulations including REACH registration requirements and CLP classification as Acute Tox. 4, STOT SE 3, Skin Irrit. 2, Eye Irrit. 2, and Aquatic hazard categories. While not currently listed as an SVHC (Substance of Very High Concern), it requires safety data sheets and appropriate hazard communication. Users must comply with occupational exposure limits and environmental protection measures under relevant national implementations.

1,2-dichlorobenzene is available through OYSI, a European distributor of technical chemicals specializing in industrial and professional applications. OYSI provides this regulated substance to qualified customers with proper documentation, safety data sheets, and regulatory compliance support. As a specialized chemical distributor, OYSI ensures product quality, proper packaging, and adherence to European chemical regulations including REACH and CLP requirements for professional users.