Sulphur Fast Blue 3r Sulphur Blue 5 Dyes for Cotton Denim Fabrics

Sulphur Fast Blue 3r Sulphur Blue 5 Dyes for Cotton Denim Fabrics. Deep Navy Blue with Excellent Fastness: Sulphur Fast Blue 3R (C.I. Sulphur Blue 5) delivers rich, deep navy shades with good light and wash fastness on cotton and cellulosic fibers. Versatile Cellulosic Applications: Ideal for cotton, linen, viscose, and vinylon/cotton blends. Suitable for garment dyeing, exhaust dyeing, and direct printing. Reliable Quality: Dark blue powder. Insoluble in water. Dissolves in sodium sulfide to greenish-blue. C.I. 53235 | CAS 60569-85-9 | EINECS 262-306-2. Simplify Your Sourcing: One deep blue dye for cotton, linen, viscose, and blends. The primary choice for navy blue shades---consistent, reliable, and cost-effective.