Benzo[a]pyrene

Benzo[a]pyrene is a polycyclic aromatic hydrocarbon (PAH) with the molecular formula C20H12 and CAS number 50-32-8. This compound consists of five fused benzene rings and has a molecular weight of 252.3 g/mol. It is classified as a highly hazardous substance with carcinogenic, mutagenic, and reproductive toxicity properties, requiring careful handling and strict safety measures in industrial applications.

Benzo[a]pyrene is a solid crystalline compound that appears as pale yellow crystals or powder at room temperature. It has very low water solubility but is soluble in organic solvents such as benzene, toluene, and acetone. The compound is odorless and exhibits strong fluorescence under UV light. It has a high melting point and low vapor pressure, making it relatively stable under normal conditions.

Benzo[a]pyrene is primarily used as a research chemical and analytical standard in environmental monitoring and toxicology studies. It serves as a reference compound for PAH analysis in environmental samples, food testing, and air quality assessments. In industrial settings, it may be used in specialized research applications and as a marker compound for combustion processes and pollution studies.

Benzo[a]pyrene requires strict safety measures due to its carcinogenic and mutagenic properties. Always wear appropriate personal protective equipment including nitrile gloves, safety goggles, and lab coats. Work in a well-ventilated area or fume hood to prevent inhalation. Avoid skin contact and ingestion completely. Use proper handling techniques to minimize dust formation and ensure all personnel are trained in hazardous chemical procedures.

Benzo[a]pyrene should be stored in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep containers tightly sealed to prevent contamination and minimize exposure. Store in designated areas for carcinogenic substances with restricted access. Maintain storage temperature below 25°C and ensure compatibility with storage materials. Keep away from oxidizing agents and implement proper inventory management for hazardous chemicals.

Benzo[a]pyrene exposure requires immediate action due to its toxic properties. For skin contact, immediately remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush with clean water for 15 minutes. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and seek medical attention immediately. Always consult a physician after any exposure.

Benzo[a]pyrene disposal must comply with hazardous waste regulations due to its carcinogenic properties. The substance should be collected in appropriate hazardous waste containers and disposed of through licensed hazardous waste disposal companies. Never dispose of in regular waste or pour down drains. Follow local and national regulations for carcinogenic waste disposal, maintain proper documentation, and ensure proper labeling of waste containers.

Benzo[a]pyrene is classified under ADR Class 9 (Miscellaneous dangerous substances), Packing Group III for transportation purposes. It must be packaged in appropriate containers that meet UN specifications and properly labeled with hazard markings. Transport documentation must include proper shipping names and hazard information. Carriers must be trained in handling dangerous goods and follow ADR regulations for safe transportation of hazardous materials.

Benzo[a]pyrene is subject to strict regulations under REACH and CLP regulations in Europe due to its classification as carcinogenic, mutagenic, and toxic to reproduction (CMR Category 1B). It requires safety data sheets, proper labeling with GHS pictograms (GHS07, GHS08, GHS09), and adherence to occupational exposure limits. Special authorization may be required for certain uses, and it falls under environmental monitoring requirements.

Benzo[a]pyrene is available through specialized chemical distributors in Europe, including OYSI, which supplies high-quality research chemicals and analytical standards. Due to its hazardous nature, purchase is typically restricted to qualified laboratories and industrial users with proper safety protocols. Buyers must demonstrate appropriate handling capabilities and may need to provide end-use certificates. Contact authorized distributors for availability and regulatory compliance requirements.