naphthalin

Naphthalin is a polycyclic aromatic hydrocarbon with the chemical formula C10H8. It consists of two fused benzene rings. Naphthalin is a white, crystalline solid with a characteristic strong odor, often associated with mothballs. It is insoluble in water but soluble in organic solvents like ethanol and ether.

Historically, naphthalin was primarily produced from coal tar. It is now also synthesized from petroleum. Its most well-known application was as a fumigant for repelling moths and other insects, though this use has declined due to health concerns. Naphthalin is a precursor in the production of various chemicals, including phthalic anhydride, which is used in the manufacture of plastics, dyes, and resins. It also finds use in the production of insecticides and tanning agents.

Exposure to naphthalin can occur through inhalation, ingestion, or skin contact. It is considered a hazardous substance and can cause various health effects, including hemolytic anemia, particularly in individuals with a deficiency of the enzyme glucose-6-phosphate dehydrogenase. Long-term exposure has also been linked to potential carcinogenic effects. Due to these concerns, its use and handling are subject to regulatory guidelines.