1,2,3,4,5-pentachlorobenzene

1,2,3,4,5-pentachlorobenzene is a chlorinated aromatic compound with the molecular formula C6HCl5 and CAS number 608-93-5. This substance consists of a benzene ring with five chlorine atoms attached at positions 1,2,3,4, and 5. With a molecular weight of 250.3 g/mol, it belongs to the family of polychlorinated benzenes and is classified as a hazardous substance requiring careful handling due to its flammability and toxicity properties.

1,2,3,4,5-pentachlorobenzene is a solid crystalline compound at room temperature with limited water solubility due to its highly chlorinated structure. The substance exhibits typical characteristics of chlorinated aromatics, including chemical stability and persistence. Its high degree of chlorination contributes to its lipophilic nature and bioaccumulation potential. The compound's physical properties make it suitable for specific industrial applications while requiring appropriate safety measures during handling and storage.

1,2,3,4,5-pentachlorobenzene is primarily used as an intermediate in chemical synthesis and research applications. The compound serves in the production of specialized chemicals and may be utilized in analytical chemistry as a reference standard. Its applications are generally limited to professional and industrial use due to its hazardous classification. The substance may also find use in specific research contexts where chlorinated aromatic compounds are required for synthetic or analytical purposes.

1,2,3,4,5-pentachlorobenzene requires careful handling with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. As a flammable solid (Class 1), keep away from ignition sources, heat, and sparks. Handle with care to avoid dust formation and ensure proper grounding when transferring the material to prevent static electricity buildup.

1,2,3,4,5-pentachlorobenzene should be stored in a cool, dry, well-ventilated area away from heat sources and ignition points due to its flammable solid classification. Keep containers tightly closed and store separately from incompatible materials such as strong oxidizers. The storage area should have appropriate fire prevention measures and be designed for hazardous chemical storage. Ensure proper labeling with GHS pictograms and maintain inventory records for regulatory compliance and safety management.

In case of skin contact with 1,2,3,4,5-pentachlorobenzene, immediately remove contaminated clothing and wash affected areas thoroughly with soap and water for at least 15 minutes. If eye contact occurs, rinse immediately with clean water for 15 minutes and seek medical attention. In case of inhalation, move the person to fresh air and seek medical advice if symptoms develop. For ingestion, do not induce vomiting and seek immediate medical attention. Always consult the safety data sheet for specific first aid measures.

1,2,3,4,5-pentachlorobenzene must be disposed of as hazardous waste through licensed waste management companies in accordance with local and European regulations. The substance cannot be disposed of in regular waste streams due to its environmental hazard classification (Aquatic Acute 1, Aquatic Chronic 1). Contaminated materials, containers, and equipment should also be treated as hazardous waste. Consult local authorities and waste management specialists for specific disposal requirements and approved treatment methods.

1,2,3,4,5-pentachlorobenzene is classified as ADR Class 4.1 (Flammable solids), Packing Group II, requiring compliance with dangerous goods transportation regulations. The substance must be packaged in approved containers with proper labeling including GHS pictograms (GHS02, GHS07, GHS09) and hazard information. Transportation documents must include the correct shipping name, UN number, and hazard class. Only qualified personnel should handle transport operations, and vehicles must meet ADR requirements for Class 4.1 substances.

1,2,3,4,5-pentachlorobenzene is subject to REACH and CLP regulations in Europe, requiring proper classification, labeling, and safety data sheet provision. The substance is classified with multiple hazard categories including Flam. Sol. 1, Acute Tox. 4, and aquatic toxicity classes, necessitating compliance with dangerous goods and environmental protection regulations. While not currently listed as SVHC, its hazardous properties require strict adherence to occupational safety, transportation, and waste management regulations across EU member states.

1,2,3,4,5-pentachlorobenzene is available through OYSI, a specialized European distributor of chemical products. As a professional chemical supplier, OYSI can provide this regulated substance to qualified industrial and research customers with proper documentation and safety data sheets. Due to its hazardous classification, purchase may be restricted to licensed users with appropriate handling facilities. Contact OYSI directly for availability, specifications, and regulatory compliance requirements for your specific application needs.