2,3,4,5,6-pentachlorophenol

2,3,4,5,6-pentachlorophenol is a chlorinated phenolic compound with the molecular formula C6HCl5O and CAS number 87-86-5. This organochlorine substance has a molecular weight of 266.3 g/mol and belongs to the family of polychlorinated phenols. It is classified as a hazardous chemical with multiple health and environmental risks, including carcinogenic properties (Category 2) and acute toxicity. The compound requires careful handling due to its dangerous classification under GHS regulations.

2,3,4,5,6-pentachlorophenol is typically a white to light yellow crystalline solid at room temperature with a characteristic phenolic odor. The compound has low water solubility but dissolves well in organic solvents such as alcohols, acetone, and benzene. It exhibits stability under normal conditions but can decompose when heated, potentially releasing toxic chlorinated compounds. The substance's high chlorine content contributes to its persistence in the environment and bioaccumulation potential.

2,3,4,5,6-pentachlorophenol is primarily used as a biocide and preservative in industrial applications. It serves as a wood preservative, fungicide, and bactericide in various industrial processes. The compound is also utilized in the synthesis of other chemical intermediates and as a component in some specialty chemical formulations. However, its use has become increasingly restricted due to environmental and health concerns, with many applications being phased out in favor of safer alternatives.

2,3,4,5,6-pentachlorophenol requires strict safety measures including chemical-resistant gloves, safety goggles, and respiratory protection when handling. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Protective clothing should cover all exposed skin due to the substance's skin irritation properties. Avoid direct contact, ingestion, and inhalation. Emergency eyewash stations and safety showers should be readily accessible, and personnel should be trained in proper handling procedures.

2,3,4,5,6-pentachlorophenol should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep containers away from strong bases, oxidizing agents, and reactive metals. Storage areas should be secured and accessible only to authorized personnel. Containers should be properly labeled according to GHS requirements and regularly inspected for integrity. Maintain storage temperatures below decomposition point and protect from moisture to prevent degradation.

In case of skin contact with 2,3,4,5,6-pentachlorophenol, immediately remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. For eye contact, rinse immediately with clean water for 15-20 minutes and remove contact lenses if present. If inhaled, move person to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult a physician after exposure and provide the safety data sheet to medical personnel.

2,3,4,5,6-pentachlorophenol must be disposed of as hazardous waste through licensed waste management facilities capable of handling toxic and potentially carcinogenic materials. The substance cannot be disposed of in regular waste streams or sewage systems due to its environmental persistence and toxicity. Incineration at high temperatures in specialized facilities may be required. Always consult local environmental authorities and follow applicable waste disposal regulations including proper documentation and manifesting procedures.

2,3,4,5,6-pentachlorophenol is classified under ADR as Class 6.1 (Toxic substances), Packing Group II, indicating moderate toxicity requiring specific transport precautions. Packages must be properly labeled with appropriate hazard labels and markings according to dangerous goods regulations. Transport vehicles should carry appropriate emergency equipment and documentation. Drivers must be trained in dangerous goods transport, and shipments require proper dangerous goods declarations. Ensure compliance with national and international transport regulations for toxic substances.

2,3,4,5,6-pentachlorophenol is subject to strict regulations under REACH, CLP, and various national chemical control laws due to its carcinogenic and toxic properties. The substance requires safety data sheets, proper classification and labeling according to GHS standards with 'Danger' signal word. Its use may be restricted or prohibited in certain applications, particularly consumer products. Companies must comply with registration requirements, exposure assessments, and risk management measures. Regular monitoring of regulatory updates is essential as restrictions continue to evolve.

2,3,4,5,6-pentachlorophenol can be sourced through OYSI, a European distributor of technical chemicals specializing in hazardous and regulated substances. OYSI provides proper documentation, safety data sheets, and regulatory compliance support for professional customers. Due to the substance's hazardous classification and regulatory restrictions, purchases are typically limited to qualified industrial users with legitimate applications. Contact OYSI's technical team for availability, specifications, and regulatory guidance to ensure compliant procurement and handling.