Direct Blue 1 is a classic and highly versatile disazo direct dye that produces a deep, navy blue shade. It is a widely used and economical workhorse dye with a very strong affinity for cellulosic and protein-based substrates. Its primary applications are in the paper and leather industries, where it is valued for its ability to produce deep, uniform shades with good performance and reliability.
Applications
Paper Colouring: A staple for dyeing various grades of paper and board, especially for deep blue and black shades.
Leather Finishing: Extensively used for dyeing all types of leather to a solid navy blue.
Textile Dyeing: Suitable for dyeing cotton, viscose, and silk, particularly for dark shades.