tolylenediamine

noun

tolylene·​diamine

"+

: 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 sense 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 sense b

Word History

Etymology

tolylene + diamine

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