Naphtho[1,2-b]phenanthrene

Naphtho[1,2-b]phenanthrene is a polycyclic aromatic hydrocarbon (PAH) with the molecular formula C22H14 and CAS number 53-70-3. This complex organic compound consists of fused benzene rings forming a characteristic naphtho-phenanthrene structure. With a molecular weight of 278.3 g/mol, it belongs to a class of compounds known for their carcinogenic properties and environmental persistence.

Naphtho[1,2-b]phenanthrene is typically a crystalline solid at room temperature with a characteristic aromatic structure. As a polycyclic aromatic hydrocarbon, it exhibits low water solubility but dissolves in organic solvents like benzene and toluene. The compound has a relatively high melting point due to its extensive π-electron system and intermolecular interactions typical of PAH compounds.

Naphtho[1,2-b]phenanthrene is primarily used in research applications and as an intermediate in organic synthesis. It serves as a starting material for the production of specialized dyes, pharmaceuticals, and other complex organic compounds. Due to its carcinogenic classification (Carc. 1B), its industrial applications are limited and strictly controlled, with most uses confined to laboratory research and specialized chemical manufacturing processes.

Naphtho[1,2-b]phenanthrene requires strict safety measures due to its carcinogenic properties (GHS08 pictogram). Workers must wear appropriate personal protective equipment including respiratory protection, chemical-resistant gloves, and protective clothing. Handle only in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid skin contact and ensure proper training on carcinogenic substance handling procedures before use.

Naphtho[1,2-b]phenanthrene should be stored in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Use tightly sealed containers to prevent environmental release, considering its aquatic toxicity classification (GHS09). Store in designated areas for carcinogenic substances with restricted access and appropriate labeling. Maintain storage conditions that prevent degradation and minimize exposure risks to personnel and environment.

Immediate action is required due to the carcinogenic nature of naphtho[1,2-b]phenanthrene. For skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water. In case of eye contact, rinse immediately with plenty of clean water for at least 15 minutes. If inhaled, move to fresh air immediately. Seek medical attention promptly and inform healthcare providers about the carcinogenic properties of the substance.

Naphtho[1,2-b]phenanthrene requires disposal as hazardous waste due to its carcinogenic and aquatic toxic properties. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Never dispose of this substance through regular waste streams or release into the environment. Follow local and national regulations for carcinogenic waste disposal, including proper documentation and tracking requirements throughout the disposal process.

Naphtho[1,2-b]phenanthrene is classified as ADR Class 9 (Miscellaneous dangerous substances), Packing Group III for transportation. Packages must be properly labeled with appropriate hazard pictograms (GHS08, GHS09) and danger signal word. Use approved packaging that prevents leakage and environmental contamination. Transport documentation must include proper shipping names, hazard classes, and emergency response information according to ADR regulations.

Naphtho[1,2-b]phenanthrene is subject to strict regulations under CLP Regulation due to its classification as Carc. 1B and aquatic toxicity. It falls under REACH registration requirements for chemical substances. While not currently listed as SVHC, its carcinogenic properties require compliance with occupational exposure limits and environmental protection measures. Specific authorization may be required for certain uses under various national and European chemical safety regulations.

Naphtho[1,2-b]phenanthrene is available through specialized chemical distributors like OYSI, a European distributor of technical chemicals. Due to its carcinogenic classification and regulatory requirements, purchase is typically restricted to qualified industrial and research users. Buyers must demonstrate appropriate handling capabilities and regulatory compliance. Contact OYSI for availability, technical specifications, and regulatory documentation required for safe handling and use.