Toxicology
Aniline is toxic by inhalation of the vapour, ingestion, or percutaneous absorption. The IARC lists it in Group 3 (not classifiable as to its carcinogenicity to humans) due to the limited and contradictory data available. The early manufacture of aniline resulted in increased incidents of bladder cancer, but these effects are now attributed to naphthylamines, not anilines.
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