Chem.
any of a group of azo dyes derived from benzidine that will dye cotton and other vegetable fibers without the aid of a mordant. Also called Congo dye .
Chem.
any of a group of azo dyes derived from benzidine that will dye cotton and other vegetable fibers without the aid of a mordant. Also called Congo dye .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012