| 释义 |
tol·i·dine
\ˈtäləˌdēn, -_də̇n\ noun
(-s)
Etymology: International Scientific Vocabulary tol- + -idine
: any of several isomeric aromatic diamines [−C6H3(CH3)NH2]2 that are homologues of benzidine and made from the nitrotoluenes by alkaline reduction: as
a. : a pearly crystalline compound made from ortho-nitrotoluene and used as a dye intermediate and in chemical analysis (as in testing for free chlorine after chlorination of water because of the intense blue color it gives with chlorine); 3,3′-dimethyl-benzidine — called also ortho-tolidine
b. : a crystalline compound made from meta-nitrotoluene and used as a dye intermediate; 2,2′-dimethyl-benzidine — called also meta-tolidine |