Description

Sulphur Blue 11 is a synthetic organic dye belonging to the sulfur dye class, known for its deep blue color and excellent fastness properties. It is a critical coloring agent valued for its ability to produce durable, wash-fast shades on various substrates. This product is essential for manufacturers in the textile and leather industries seeking high-performance, cost-effective dyes for their coloration processes.

Application

• Primary dyeing of cotton textiles, including yarn, fabric, and denim.
• Coloration of viscose rayon and other cellulosic fibers.
• Dyeing of leather goods to achieve deep, uniform blue shades.
• Used in the production of paper for specialty coloring applications.
• Potential applications in the coloration of wood and other porous materials.

Basic Information

Product Name	Sulphur Blue 11
CAS No.	1326-98-3
Molecular Formula	C28H16N4O6S4
Molecular Weight	656.70 g/mol
Synonyms	Sulfur Blue 11; C.I. 53235; C.I. Sulphur Blue 11; Hydron Blue R; Immedial Blue GL; Kayaku Sulphur Blue G; Leuco Sulphur Blue 11; Mitsui Sulphur Blue G; Sulphur Blue G; Sulphur Dark Blue G; Thion Blue G
EINECS	215-483-8

Quality Control

Our Sulphur Blue 11 is manufactured under a strict quality management system. Each batch undergoes comprehensive testing for key parameters including color strength, shade, solubility, and impurity profile to ensure consistent performance and batch-to-batch uniformity. Certificates of Analysis (COA) detailing these specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to minimize moisture absorption and dust contamination.

Specification

Item	Specification
Appearance	Dark Blue to Bluish-Black Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	To be determined
Ash Content	≤ 1.0%
Particle Size (Passing 80 mesh)	≥ 95%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.