indamine Chem.
(ˈɪndəmiːn)
[f. indo-2 + amine.]
A blue dye, NH2·C6H4·N: C6H4:NH (also called phenylene blue); also, any of the derivatives of this compound, which form a group of blue and green dyes now important only as intermediates for safranine dyes.
| 1888 Jrnl. Chem. Soc. LIV. 949 (heading) Indamines and indophenols. 1903 C. Salter tr. G. von Georgievics's Chem. Dye-Stuffs 265 When di-p.-amidodiphenylamine is oxidised with potassium bichromate, there is formed a blue dye-stuff, known as Indamine or Phenylene Blue... From this are derived a whole group of dye-stuffs, which are, therefore, named ‘Indamines’. 1961 L. F. & M. Fieser Adv. Org. Chem. xxvi. 852 The highly pigmented N-phenyl derivatives of quinonimine and quinonediimine, indophenol and indamine, are relatively stable, crystallizable substances. |