Definition of tolylenediamine
: any of six isomeric crystalline bases CH3C6H3(NH2)2 derived from toluene of which some are used as dye intermediates: such as
a
: an isomer obtained by reduction of dinitrotoluene (see dinitrotoluene a); toluene-2,4-diamine — called also
meta-tolylenediamine
b
: an isomer obtained by reduction of aminoazo-toluene; toluene-2,5-diamine — called also
para-tolylenediamine; see safranine b
