Description

4-(benzoylamino)-6-[[5-[[[4-fluoro-6-[(2-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]methyl]-1-sulpho-2-naphthyl]azo]-5-hydroxynaphthalene-1,7-disulphonic acid, sodium salt is a high-performance, water-soluble anionic dye belonging to the class of reactive or direct dyes, characterized by its complex polyazo and triazine-based structure. This compound is engineered to deliver exceptional color strength, brightness, and wash-fastness, making it a critical component for demanding coloration processes. It is primarily required by manufacturers in the textile, leather, and specialty paper industries seeking vibrant and durable hues.

Application

This specialized dye is designed for high-value applications where color performance and stability are paramount.

• Textile Dyeing: Primary application for dyeing cotton, viscose, silk, and other cellulosic fibers, offering excellent exhaustion and fixation properties.
• Leather Coloring: Used in the dyeing of leather goods to achieve deep, uniform, and lightfast colors.
• Paper Staining: Employed in the production of high-grade colored papers, including decorative and security papers.
• Ink Formulation: A key pigment for manufacturing inks used in jet printing and other specialty printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific affinity.

Basic Information

Product Name	4-(benzoylamino)-6-[[5-[[[4-fluoro-6-[(2-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]methyl]-1-sulpho-2-naphthyl]azo]-5-hydroxynaphthalene-1,7-disulphonic acid, sodium salt
CAS No.	83763-64-8
Molecular Formula	C44H28F N9 Na4 O16S5 (Contact for exact isomer details)
Molecular Weight	~1250 g/mol (Contact for exact value)
Synonyms	Reactive Black 5 (Analog); C.I. Direct Black 168 (related); Sodium 4-(benzamido)-6-({5-[({4-fluoro-6-[(2-sulfophenyl)amino]-1,3,5-triazin-2-yl}amino)methyl]-1-sulfo-2-naphthyl}diazenyl)-5-hydroxy-1,7-naphthalenedisulfonate; Polyazo dye with triazine group; Anionic disazo dye; Leather Black Dye; Textile Black Dye
EINECS	Contact for details

Quality Control

Our production of this dye adheres to stringent quality management systems to ensure batch-to-batch consistency and performance reliability. Every lot is analyzed for critical parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance tests is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90% (Dye content)
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
pH (1% Solution)	6.0 - 8.0
Ash Content	Max. 20%
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.