Description

2,7-Naphthalenedisulfonic acid, 4-4-5-amino-4-sulfo-2-4-2-(sulfooxy)ethylsulfonylphenylazophenylamino-6-chloro-1,3,5-triazin-2-ylamino-5-hydroxy-6-(1-sulfo-2-naphthalenyl)azo-, sodium salt is a high-performance, polyfunctional reactive dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple sulfonic acid groups, a reactive triazine ring, and azo linkages, provides exceptional binding affinity and chromophore properties. This compound is primarily utilized in the synthesis of advanced, wash-fast reactive dyes and pigments for the textile industry, where it delivers vibrant colors and superior performance on cellulosic fibers like cotton and viscose.

Application

• Primary Intermediate for Reactive Dyes: Key building block for manufacturing high-quality reactive dyes used in textile dyeing and printing, particularly for cotton, linen, and other cellulosic fabrics.
• Specialty Pigment Synthesis: Used in the production of complex organic pigments for inks, coatings, and plastics requiring high color strength and stability.
• Functional Dye Manufacturing: Serves as a precursor for dyes used in technical applications, including paper coloring and leather finishing.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Textile Chemical Production: Integral to formulating specialized dyeing auxiliaries and finishing agents that enhance color fastness.

Basic Information

Item	Details
Product Name	2,7-Naphthalenedisulfonic acid, 4-4-5-amino-4-sulfo-2-4-2-(sulfooxy)ethylsulfonylphenylazophenylamino-6-chloro-1,3,5-triazin-2-ylamino-5-hydroxy-6-(1-sulfo-2-naphthalenyl)azo-, sodium salt
CAS No.	157707-94-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Red 268; Reactive Red 268; Sodium 5-[[4-chloro-6-[[5-[[2-(ethenylsulfonyl)phenyl]azo]-2-sulfophenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[1-sulfo-2-naphthyl]azo]-2,7-naphthalenedisulfonate; Reactive Dye Intermediate RR268; 4-[[4-Chloro-6-[[5-[[2-(ethenylsulfonyl)phenyl]azo]-2-sulfophenyl]amino]-1,3,5-triazin-2-yl]amino]-5-hydroxy-6-[(1-sulfo-2-naphthyl)azo]-2,7-naphthalenedisulfonic acid sodium salt
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 high purity. The manufacturing process is monitored against rigorous internal specifications focusing on critical parameters such as chromophore content, reactive group integrity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing assay (HPLC), identification (IR), and relevant physical-chemical parameters is provided with each shipment to guarantee it meets your specific application requirements.

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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90%
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals	Max. 20 ppm

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