Description

5-[[4-Chloro-6-[(4-Sulfophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-4-Hydroxy-3-[(2-Sulfophenyl)Azo]-2,7-Naphthalenedisulfonic Acid is a high-purity, reactive dye intermediate and specialty chemical with a complex polyfunctional structure. Its value lies in its ability to act as a key building block for synthesizing high-performance dyes and pigments, particularly reactive azo dyes for textiles. This compound is essential for manufacturers and R&D facilities in the dye, textile, and specialty chemical industries seeking to develop products with enhanced color fastness and specific chromatic properties.

Application

• Primary Intermediate for Reactive Dyes: Serves as a critical precursor in the synthesis of high-grade reactive dyes, especially for cotton and other cellulosic fibers.
• Textile Dyeing and Printing: Used to manufacture dyes that form covalent bonds with fabric, resulting in excellent wash and light fastness.
• Specialty Pigment Production: Acts as a key component in the creation of complex organic pigments for inks, coatings, and plastics.
• Research & Development: Utilized in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.
• Functional Chemical Synthesis: Its multiple reactive sites (chloro, azo, sulfonic acid) make it valuable for creating other functional molecules and polymers.

Basic Information

Product Name	5-[[4-Chloro-6-[(4-Sulfophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-4-Hydroxy-3-[(2-Sulfophenyl)Azo]-2,7-Naphthalenedisulfonic Acid
CAS No.	91023-88-0
Molecular Formula	C25H16ClN7O11S3
Molecular Weight	754.08 g/mol
Synonyms	Reactive Black 5 Intermediate; C.I. Reactive Black 5 precursor; 5-[(4-Chloro-6-[(4-sulfophenyl)amino]-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[(2-sulfophenyl)diazenyl]naphthalene-2,7-disulfonic acid; Azo dye intermediate 91023-88-0; Tetrasulfonated azo-triazine dye intermediate; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]-
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling and spectroscopic identification (IR, UV-Vis). A detailed Certificate of Analysis (COA) documenting purity, identity, and relevant physical parameters is provided with every 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (1% in Water)	Complete, clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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