Benzo[a]anthracene

Benzo[a]anthracene is a polycyclic aromatic hydrocarbon (PAH) with the molecular formula C18H12 and CAS number 56-55-3. This compound consists of four fused benzene rings forming a distinctive angular structure. With a molecular weight of 228.3 g/mol, it appears as a colorless to pale yellow crystalline solid at room temperature. Benzo[a]anthracene is classified as a dangerous substance due to its carcinogenic properties and environmental hazards, requiring careful handling and specialized safety measures in professional applications.

Benzo[a]anthracene is a crystalline solid that appears colorless to pale yellow at room temperature. It has a high melting point typical of polycyclic aromatic compounds and exhibits very low water solubility due to its hydrophobic nature. The compound is more soluble in organic solvents such as benzene, toluene, and chloroform. It shows characteristic fluorescence under UV light and has low volatility at ambient temperatures, though it can sublime when heated.

Benzo[a]anthracene is primarily used as a research chemical and analytical standard in laboratory applications. It serves as a reference material for environmental analysis, particularly in studies of PAH contamination in soil, water, and air samples. The compound is also utilized in photochemical research, fluorescence studies, and as a starting material for synthesizing other organic compounds. Due to its carcinogenic classification, its use is strictly limited to controlled professional and research environments with appropriate safety measures.

Benzo[a]anthracene must be handled with extreme caution due to its carcinogenic properties (Carc. 1B classification). Essential personal protective equipment includes nitrile gloves, safety goggles, and respiratory protection when dust formation is possible. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation. Avoid skin contact, ingestion, and dust generation. Use appropriate tools to minimize direct handling and ensure all personnel are trained in proper safety procedures before working with this hazardous material.

Benzo[a]anthracene should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from heat sources, ignition sources, and direct sunlight. Storage areas must be restricted to authorized personnel only due to the carcinogenic nature of the compound. Keep containers upright and clearly labeled with appropriate hazard warnings. Avoid storage near incompatible materials such as strong oxidizing agents. Regular inspection of containers for damage or leaks is essential to maintain safe storage conditions.

In case of skin contact with benzo[a]anthracene, 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 15 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. For ingestion, do not induce vomiting and seek medical attention immediately. In all cases of exposure, contact emergency services and provide the safety data sheet to medical personnel for proper treatment guidance.

Benzo[a]anthracene must be disposed of as hazardous waste through licensed waste management companies specializing in carcinogenic substances. Never dispose of this material in regular waste streams, sewers, or the environment. Small quantities should be collected in appropriate containers and labeled clearly for hazardous waste pickup. Incineration at high temperatures in authorized facilities is typically the preferred disposal method. Always consult local environmental regulations and your waste management provider for specific disposal requirements and documentation procedures.

Benzo[a]anthracene is classified under ADR Class 9 (Miscellaneous Dangerous Substances), Packing Group III for transportation purposes. It must be packaged in appropriate UN-approved containers with proper labeling including hazard pictogrammes GHS08 and GHS09. Transport documents must include the correct shipping name, UN number, and hazard classification. Only authorized carriers experienced in handling carcinogenic materials should transport this substance. Special precautions are required to prevent spillage and ensure emergency response capabilities during transit.

Benzo[a]anthracene is subject to strict regulatory control under various European legislation including REACH regulation for chemical registration and evaluation. The CLP regulation governs its classification, labeling, and packaging requirements, mandating specific hazard pictogrammes and safety information. As a carcinogenic substance, it may be subject to occupational exposure limits and workplace safety regulations. Additionally, environmental regulations control its release into water bodies due to its aquatic toxicity classification (Aquatic Acute 1, Aquatic Chronic 1).

Benzo[a]anthracene is available through OYSI, a specialized European distributor of technical chemicals serving professional and research markets. As a controlled carcinogenic substance, purchases are restricted to qualified organizations with appropriate handling capabilities and safety measures. Buyers must typically provide documentation of their intended use and safety protocols. OYSI ensures compliance with all relevant European regulations including REACH registration requirements and provides comprehensive safety documentation with each shipment to authorized customers across Europe.