o-Anisidine (2-anisidine) is a yellow liquid with a melting point of -1 to 5 °C and a density of 1.09 g/cm3. The vapor pressure is 0.05 mbar at 20 °C but increases greatly with temperature. It has an aromatic smell and is well absorbed by inhalation, oral ingestion and skin contact. o-Anisidine is a very toxic agent that causes blood, enzyme and nerve damage with cyanosis and the danger of suffocation.The agent is an experimental carcinogen and is strongly suspected to be a human carcinogen also. o-Anisidine has dangerous pollutant properties for water. Non-wastewaters from the production of dyes containing o-Anisidine are listed as RCRA hazardous waste, with the code K181