2naphthylamine6sulfonic

2-Naphthylamine, also known as beta-naphthylamine, is an organic compound with the chemical formula C10H9N. It is an amine derived from naphthalene. Historically, 2-naphthylamine was used in the production of azo dyes. Its industrial applications have largely ceased due to its significant health risks.

The primary concern associated with 2-naphthylamine is its carcinogenicity. It is classified as a Group 1 carcinogen by the International Agency for Research on Cancer (IARC), meaning it is carcinogenic to humans. Exposure to 2-naphthylamine is strongly linked to an increased risk of bladder cancer. Due to this hazard, its production, import, and use are heavily restricted or banned in many countries.

Exposure can occur through inhalation, skin absorption, or ingestion. In occupational settings, workers involved in its historical manufacture or handling were at the highest risk. Although its use has diminished, understanding its properties and risks remains important for historical context and for managing any remaining contamination or legacy issues.

2-Naphthylamine is a solid at room temperature. It is structurally similar to 1-naphthylamine, but the position of the amino group on the naphthalene ring leads to different chemical properties and significantly different toxicological profiles, with 2-naphthylamine being the far more dangerous isomer.