Description

4-Amino-3,6-Bis[[5-[[4-Chloro-6-[(o-Tolyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-2-Sulphophenyl]Azo]-5-Hydroxynaphthalene-2,7-Disulphonic Acid is a high-performance, polyfunctional reactive dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages, sulphonic acid groups, and a chlorotriazine reactive center, makes it a critical precursor for synthesizing deep, vibrant, and wash-fast dyes. This compound is essential for manufacturers in the textile and specialty chemical industries seeking to produce high-quality reactive dyes for cotton and other cellulosic fibers, where color strength and durability are paramount.

Application

• Primary Intermediate for Reactive Dyes: Serves as the key chromophore and reactive component in the synthesis of high-grade reactive dyes, particularly for dyeing and printing cotton, viscose, and other natural fibers.
• Textile Industry: Used to manufacture dyes that offer excellent fixation, brilliant shades (often reds, blues, or blacks), and superior fastness properties including wash, light, and perspiration fastness.
• Specialty Pigments: Can be utilized in the development of complex, high-performance pigments for niche applications requiring specific color properties and stability.
• Research & Development: Acts as a valuable building block in chemical R&D for creating novel chromophores and studying structure-property relationships in dye chemistry.
• Ink Formulation: Potential use as a precursor for specialized inks where color intensity and chemical resistance are critical requirements.

Basic Information

Product Name	4-Amino-3,6-Bis[[5-[[4-Chloro-6-[(o-Tolyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-2-Sulphophenyl]Azo]-5-Hydroxynaphthalene-2,7-Disulphonic Acid
CAS No.	81173-72-0
Molecular Formula	C52H36ClN15O14S4
Molecular Weight	1290.66 g/mol
Synonyms	Reactive Dye Intermediate 81173-72-0; C.I. Reactive Black 5 Precursor; Bis(monochlorotriazinyl) Azo Dye Intermediate; Tetrasulfonated Bisazo Reactive Dye Intermediate; 4-Amino-5-hydroxy-3,6-bis[[5-[[4-chloro-6-[(2-methylphenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]azo]naphthalene-2,7-disulfonic acid; Polyazo Reactive Dye Intermediate; Azo-Triazine Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, assay, impurity profile, and physical specifications is provided with every shipment to support your quality assurance and production planning.

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 stability and performance.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content (KF)	Max. 5.0%
Sulfated Ash	Max. 1.0%
Solubility (in Water)	Partially to fully soluble
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.