Found 1 items, similar to benzidine dyes.
English → English (gcide) Definition: benzidine dyes Congo group \Con"go group\ [From Congo red.] A group of artificial dyes with an affinity for vegetable fibers, so that no mordant is required. Most of them are azo compounds derived from benzidine or tolidine. Called also benzidine dyes. [Webster 1913 Suppl.]