2,3,4,5,6-pentachlorophenol

2,3,4,5,6-pentachlorophenol is a chlorinated aromatic compound with the molecular formula C6HCl5O and CAS number 87-86-5. This substance has a molecular weight of 266.3 g/mol and belongs to the phenol family, where five chlorine atoms are substituted on the benzene ring. It is classified as a hazardous chemical with multiple danger classifications including carcinogenicity category 2 and acute toxicity. The substance requires careful handling due to its significant health and environmental risks.

2,3,4,5,6-pentachlorophenol is typically a white to light brown crystalline solid at room temperature with a characteristic phenolic odor. Due to its highly chlorinated structure, it has low water solubility but is soluble in organic solvents such as alcohols and acetone. The compound is stable under normal conditions but may decompose at high temperatures, potentially releasing toxic chlorinated compounds. Its high chlorine content gives it significant persistence in the environment.

2,3,4,5,6-pentachlorophenol is primarily used as a fungicide and wood preservative in industrial applications due to its strong antimicrobial properties. It serves as an intermediate in the synthesis of other chlorinated compounds and specialty chemicals. The substance is also utilized in certain analytical applications and research settings. 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 wearing appropriate personal protective equipment such as chemical-resistant gloves, safety goggles, and respiratory protection. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid direct skin and eye contact, and ensure emergency shower and eyewash stations are readily accessible. All personnel handling this substance should be trained in proper procedures and emergency response protocols due to its high toxicity.

2,3,4,5,6-pentachlorophenol should be stored in a cool, dry, well-ventilated area away from heat sources and incompatible materials. The substance must be kept in tightly sealed, labeled containers made of appropriate materials to prevent contamination and release. Storage areas should be equipped with secondary containment measures and restricted access due to the material's toxicity. Avoid storage near oxidizing agents, strong bases, and food or feed materials to prevent dangerous reactions or contamination.

Immediate action is required upon contact with 2,3,4,5,6-pentachlorophenol due to its high toxicity. For skin contact, immediately remove contaminated clothing and rinse the affected area with plenty of water for at least 15 minutes. In case of eye contact, flush with clean water for at least 15 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. Seek medical attention promptly in all cases of 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 specialized in handling toxic chemicals. The substance cannot be disposed of in regular waste streams or sewage systems due to its environmental persistence and toxicity. Disposal must comply with local, national, and EU regulations regarding hazardous waste. Incineration at high temperatures in specialized facilities is typically the preferred disposal method, ensuring complete destruction of the chlorinated compound.

2,3,4,5,6-pentachlorophenol is classified under ADR class 6.1 (toxic substances) packing group II, indicating high toxicity requiring special transport precautions. The substance must be packaged in UN-approved containers with appropriate labeling including GHS pictograms GHS06, GHS08, and GHS09. Transport vehicles must carry proper documentation, emergency response information, and drivers require hazardous materials training. All transport must comply with ADR regulations for toxic substances to ensure safety during transit.

2,3,4,5,6-pentachlorophenol is subject to extensive regulations under EU REACH and CLP regulations due to its classification as carcinogenic category 2 and highly toxic. The substance requires registration, authorization procedures, and strict labeling requirements including the danger signal word and specific hazard pictograms. Many uses are restricted or banned in consumer products, and industrial applications require specific risk management measures. Companies must maintain detailed safety data sheets and ensure compliance with occupational exposure limits.

2,3,4,5,6-pentachlorophenol is available through specialized chemical distributors in Europe, including OYSI, which serves as a reliable supplier of technical chemicals across European markets. Due to its hazardous classification and regulatory requirements, purchases are typically restricted to qualified industrial users with proper licensing and safety infrastructure. Buyers must demonstrate compliance with REACH regulations and provide documentation of intended use. Contact authorized distributors like OYSI for availability, technical specifications, and regulatory compliance support.