Category:Toluidine

To*lu"i*dine, n. (chem.)

Defn: any one of three metameric amido derivatives of toluene Analogous to aniline, and called respectively orthtoluidine, Metatoluidine, and paratoluidine; especially, the commonest one, or Paratoluidine, which is obtained as a white crystalline substance.

Note: it is used in the aniline dye industry, and constitutes the Essential nucleus or radical of those dyes.