Ahmedabad Chemical Company

Sulphur Blue BRN Crude is a deep blue, water-insoluble powder dye primarily used for coloring cellulosic fibers like cotton and viscose. As a sulphur dye, it requires a reducing agent—typically sodium sulfide—for solubilization during the dyeing process. Known for its strong wash-fastness and cost-effectiveness, the crude form indicates a less refined variant, often used in bulk textile applications such as denim and corduroy. It offers stable shades and good light resistance but must be stored in dry, ventilated conditions to prevent oxidation and degradation.