toluidine

[ tuh-loo-i-deen, -din ]

noun

, Chemistry.

1. any of three isomeric amines having the formula C 7 H 9 N, derived from toluene: used in the dye and drug industries.

toluidine

/ tɒˈljuːɪˌdiːn /

noun

1. an amine derived from toluene existing in three isomeric forms; aminotoluene. The ortho- and meta- isomers are liquids and the para- isomer is a crystalline solid. All three are used in making dyes. Formula: C 6 H 4 CH 3 NH 2

toluidine

/ tə-lo̅o̅′ĭ-dēn′ /

1. Any of three isomeric compounds containing a benzene ring with a methyl (CH 3 ) and amino (NH 2 ) group attached to it. Toluidine is used to make dyes. Chemical formula: C 7 H 9 N.

Word History and Origins

Origin of toluidine¹

First recorded in 1840–50; tolu(ene) + -id ³ + -ine ²

Word History and Origins

Origin of toluidine¹

C19: from tolu ( ene ) + -ide + -ine ²

Example Sentences

The result is a diazo-salt; aniline, for example, giving diazobenzene chloride, and toluidine diazotoluene chloride.

From Project Gutenberg

The large quantity of aniline and toluidine now made has opened up a channel for the use of the waste borings from cast-iron.

From Project Gutenberg

It was because he was working with impure chemicals, with aniline containing a little toluidine, that he discovered mauve.

From Project Gutenberg

The aniline selected for this purpose should contain about 25% of the toluidine.

From Project Gutenberg

From this it will be evident that an aniline rich in toluidine is an essential condition for obtaining aniline red.

From Project Gutenberg