Description

Disodium 2'-[4-[[2,6-Dihydroxy-3-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Phenyl]-6-Methyl[2,6'-Bibenzothiazole]-7-Sulphonate is a high-purity, water-soluble anionic dye belonging to the benzothiazole azo class, valued for its strong and stable color properties. This compound matters for its excellent lightfastness and chemical stability, making it a reliable colorant in demanding industrial applications. It is primarily needed by manufacturers in the textile, leather, and specialty paper industries seeking vibrant and durable shades.

Application

• Textile Dyeing: Primary application for dyeing natural and synthetic fibers, particularly where high wash and light fastness are required.
• Leather Coloring: Used in the dyeing of leather goods to achieve consistent, deep, and long-lasting colors.
• Paper Industry: Employed in the production of specialty colored papers, including decorative and security papers.
• Ink Formulation: A key component in the manufacture of certain types of industrial inks, including inkjet and textile printing inks.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific affinity.
• Functional Dye Intermediate: Serves as a precursor or intermediate in the synthesis of more complex dyes and pigments.

Basic Information

Product Name	Disodium 2'-[4-[[2,6-Dihydroxy-3-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Phenyl]-6-Methyl[2,6'-Bibenzothiazole]-7-Sulphonate
CAS No.	6104-53-6
Molecular Formula	C34H20N6Na2O10S3
Molecular Weight	822.78 g/mol
Synonyms	Acid Yellow 99; C.I. 13900; Disodium 6-methyl-2'-(4-((2,6-dihydroxy-3-((4-sulfophenyl)azo)phenyl)azo)phenyl)-2,6'-bibenzothiazole-7-sulfonate; 2,6'-Bibenzothiazole-7-sulfonic acid, 6-methyl-2'-[4-[[2,6-dihydroxy-3-[(4-sulfophenyl)azo]phenyl]azo]phenyl]-, disodium salt; Leather Yellow PG; Sulphon Acid Yellow G; Acid Leather Yellow PG; C.I. Acid Yellow 99
EINECS	Contact for details

Quality Control

Our Disodium 2'-[4-[[2,6-Dihydroxy-3-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Phenyl]-6-Methyl[2,6'-Bibenzothiazole]-7-Sulphonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and spectrophotometry for color strength, to ensure it meets precise customer specifications and industry benchmarks for dye content and impurity profiles. Certificates of Analysis (COA) documenting all key parameters are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Ash Content (Sulfated)	Max. 30.0%
Heavy Metals (as Pb)	Max. 20 ppm

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