Acid Dyes is usually a type of Acid Violet Dyes that act as bases. These are, in fact, aniline dyes used for dyeing leather because of the characteristic that it is capable of combining directly with vegetable-tanned leather without the use of a mordant. As a leading manufacturer and exporter of Acid Violet Dyes, we offer excellent quality Acid Violet Dyes. It has great strength and brightness but is not usually light-fast. We deal in various grades of this to meet the different requirements by our customers.