Description

7-[4-Amino-6-(3-Sodiosulfoanilino)-1,3,5-Triazin-2-Ylamino]-4-Hydroxy-3-[4-(4-Sodiosulfophenylazo)Phenylazo]-2-Naphthalenesulfonic Acid Sodium Salt is a high-purity, water-soluble anionic dye intermediate with a complex polyazo structure. This compound is valued for its ability to impart strong, vibrant color and excellent light and wash fastness properties in final formulations. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking reliable and consistent chromophores for demanding applications. The product is supplied as a high-grade material to ensure optimal performance in synthesis and downstream processing.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-performance reactive dyes for cotton, wool, and polyamide fibers.
• Textile Dyeing and Printing: Used to produce dyes offering excellent color yield, brightness, and superior fastness to light, washing, and perspiration.
• Inkjet Ink Formulations: Serves as a critical colorant component in the manufacture of industrial and graphic arts inks, providing vivid hues and stability.
• Specialty Coatings and Paints: Incorporated into formulations where specific color properties and chemical resistance are required.
• Paper Coloring: Used in the production of dyes for high-quality paper and packaging materials.
• Research & Development: A valuable chemical for R&D laboratories developing new dye molecules, colorants, and functional materials.

Basic Information

Product Name	7-[4-Amino-6-(3-Sodiosulfoanilino)-1,3,5-Triazin-2-Ylamino]-4-Hydroxy-3-[4-(4-Sodiosulfophenylazo)Phenylazo]-2-Naphthalenesulfonic Acid Sodium Salt
CAS No.	106095-77-6
Molecular Formula	C31H20N10Na3O11S3
Molecular Weight	914.78 g/mol
Synonyms	Reactive Black 5 Intermediate; C.I. Reactive Black 5 (key precursor); Sodium 7-[4-amino-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[4-[(4-sulfophenyl)azo]phenyl]azo]naphthalene-2-sulfonate; Polyazo Dye Intermediate; 106095-77-6; Azo Triazine Dye; Anionic Polyazo Compound
EINECS	Contact for details

Quality Control

Every batch of this dye intermediate is produced under a strict quality management system to ensure chemical identity, purity, and batch-to-batch consistency. Our quality control includes comprehensive analytical testing such as HPLC for purity, spectrophotometry for color strength, and verification of key physical parameters. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to support your quality assurance and regulatory needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	95 - 105% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Ash Content (Sulfated)	≤ 20.0%

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