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 chemical consists of a benzene ring substituted with five chlorine atoms, making it a highly chlorinated derivative. With a molecular weight of 250.3 g/mol, it belongs to the family of polychlorinated benzenes. It is classified as a flammable solid with toxic and environmental hazard properties.

1,2,3,4,5-pentachlorobenzene is typically a white to off-white crystalline solid at room temperature. As a highly chlorinated aromatic compound, it exhibits low water solubility but dissolves readily in organic solvents. The substance has a characteristic chemical odor and is stable under normal conditions. Its high chlorine content contributes to its persistence in the environment and bioaccumulative potential.

1,2,3,4,5-pentachlorobenzene is primarily used as an intermediate in chemical synthesis and manufacturing processes. It serves as a precursor for the production of other chlorinated compounds and specialty chemicals. The substance may also be utilized in research applications and as a reference standard in analytical chemistry. Its specific applications are limited due to environmental and health concerns associated with highly chlorinated compounds.

1,2,3,4,5-pentachlorobenzene must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Given its flammable solid classification and acute toxicity, avoid heat sources, sparks, and direct skin contact. Ensure proper grounding when handling 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 sealed and store separately from incompatible materials such as strong oxidizers and bases. Storage areas should be equipped with appropriate fire suppression systems and spill containment measures. Maintain storage temperatures below 25°C when possible.

Immediate action is required upon contact with 1,2,3,4,5-pentachlorobenzene. For skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15-20 minutes. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and seek medical attention promptly. Always consult a physician after any significant exposure.

1,2,3,4,5-pentachlorobenzene must be disposed of as hazardous waste through licensed waste management companies due to its environmental hazard classification. The substance cannot be discharged to sewers or surface waters given its aquatic toxicity. Incineration at high temperatures in specialized facilities is typically the preferred disposal method. Always consult local environmental regulations and waste disposal authorities for specific requirements and approved disposal facilities.

1,2,3,4,5-pentachlorobenzene is classified under ADR as Class 4.1 (Flammable Solids), Packing Group II, indicating moderate danger level during transport. Packages must comply with specific UN packaging requirements and display appropriate hazard labels including flammable solid and environmental hazard markings. Transport vehicles require proper placarding and emergency response information. Only authorized carriers with appropriate permits should handle the transportation of this regulated substance.

1,2,3,4,5-pentachlorobenzene is subject to various European regulations including REACH registration requirements and CLP classification and labeling obligations. The substance must be handled according to its hazard classification as a flammable solid with acute toxicity and environmental hazards. While not currently listed as an SVHC, its environmental persistence may subject it to future regulatory scrutiny under various environmental protection frameworks.

1,2,3,4,5-pentachlorobenzene is available through OYSI, a specialized European distributor of technical chemicals. OYSI provides this regulated substance to qualified industrial customers with proper handling capabilities and regulatory compliance. As a controlled chemical requiring specialized handling and documentation, purchases are restricted to professional users with demonstrated technical need and appropriate safety infrastructure for handling flammable and toxic materials.