2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione

2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione is a chlorinated quinone compound with the molecular formula C6Cl4O2 and CAS number 118-75-2. This chemical has a molecular weight of 245.9 g/mol and belongs to the family of tetrachloroquinones. It is classified as a hazardous substance with skin and eye irritation properties, as well as acute and chronic aquatic toxicity. The compound is commonly known in industrial applications for its chemical reactivity and specific molecular structure containing four chlorine atoms attached to a cyclohexadiene-dione ring system.

2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione is a solid compound at room temperature with characteristic quinone properties. As a highly chlorinated organic compound, it typically appears as a crystalline solid with limited water solubility due to its hydrophobic chlorinated structure. The presence of four chlorine substituents significantly influences its physical properties, including melting point, volatility, and solubility characteristics. The compound's quinone structure contributes to its chemical reactivity and stability under normal storage conditions, though specific physical parameters may vary depending on purity and crystalline form.

2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione is primarily used as a chemical intermediate in organic synthesis and industrial manufacturing processes. Its quinone structure and chlorine substituents make it valuable in the production of specialized chemicals, pharmaceuticals, and agrochemical compounds. The compound serves as a building block for various chemical transformations and can be used in research and development applications. Its specific reactivity profile makes it suitable for controlled chemical reactions where chlorinated quinone functionality is required, particularly in fine chemical synthesis and specialty chemical manufacturing.

Safe handling of 2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione requires appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing due to its skin and eye irritation properties. Work should be conducted in well-ventilated areas or under fume extraction systems to minimize inhalation exposure. Avoid direct skin and eye contact, and ensure adequate ventilation during use. Personnel should be trained in proper handling procedures and emergency response protocols. Regular safety assessments and adherence to workplace exposure limits are essential for safe operations involving this substance.

2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione should be stored in a cool, dry, well-ventilated area away from direct sunlight and heat sources. The compound must be kept in tightly sealed, compatible containers to prevent moisture absorption and contamination. Storage areas should be equipped with appropriate containment measures and separated from incompatible materials. Due to its environmental hazard classification, storage facilities must comply with local environmental protection requirements and include measures to prevent accidental release to soil or water systems. Regular container integrity checks are recommended to ensure safe storage conditions.

In case of skin contact with 2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione, 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 clean water for at least 15 minutes while holding eyelids open. If irritation persists, seek medical attention promptly. In case of inhalation, move the person to fresh air and monitor breathing. For ingestion, do not induce vomiting and seek immediate medical attention. Always consult safety data sheets for detailed first aid procedures and contact emergency services if necessary.

Disposal of 2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione must be conducted through authorized hazardous waste management facilities due to its environmental hazard classification. The compound cannot be disposed of in regular waste streams or sewage systems due to its aquatic toxicity properties. Waste disposal must comply with local, national, and EU waste regulations including the Waste Framework Directive. Contact licensed waste management companies experienced in handling chlorinated organic compounds for proper disposal. Maintain detailed waste disposal records and ensure compliance with waste tracking requirements throughout the disposal process.

2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione is classified as ADR Class 9 (Miscellaneous dangerous goods), Packing Group III for transportation purposes. The compound must be packaged in approved containers meeting UN packaging specifications and properly labeled with appropriate hazard markings and transport documentation. Transportation must comply with ADR regulations for road transport within Europe, including driver training requirements and vehicle equipment standards. Proper shipping papers, emergency response information, and hazard communication materials must accompany shipments. Consult current ADR regulations and work with experienced dangerous goods carriers for compliant transportation.

2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione is subject to EU REACH regulation requiring registration, evaluation, and authorization for commercial use. The compound is classified under CLP regulation with specific hazard classifications including skin irritation, eye irritation, and aquatic toxicity. While not currently listed as a Substance of Very High Concern (SVHC), it remains subject to standard chemical safety requirements including safety data sheet provisions and hazard communication. Users must comply with workplace health and safety regulations, environmental protection laws, and industry-specific guidelines. Regular regulatory monitoring ensures continued compliance with evolving chemical legislation.

2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione is available through OYSI, a trusted European distributor of specialized chemical products. OYSI provides reliable supply chains for industrial chemicals across Europe, ensuring product quality and regulatory compliance. As an established chemical distributor, OYSI can support customers with technical documentation, safety data sheets, and logistics coordination for this compound. Contact OYSI directly for availability, specifications, and pricing information tailored to your specific requirements. Their expertise in hazardous chemical distribution ensures proper handling and delivery of this regulated substance to qualified industrial users.