Description

2,7-Naphthalenedisulfonic Acid, 5-4-Chloro-6-4-2-(Sulfooxy)Ethylsulfonylphenylamino-1,3,5-Triazin-2-Ylamino-4-Hydroxy-3-(3-Sulfophenyl)Azo-, Tetrasodium Salt is a high-purity, water-soluble reactive dye intermediate of significant industrial importance. Its complex polyfunctional structure provides excellent binding affinity and chromophoric properties, making it a critical precursor for advanced colorants. This compound is essential for manufacturers in the textile, specialty ink, and high-performance pigment industries seeking to produce vivid, wash-fast, and light-stable dyes.

Application

• Reactive Dye Synthesis: Primary intermediate for manufacturing high-quality reactive dyes used in cotton, wool, and nylon fiber dyeing and printing.
• Textile Industry: Key component in producing dyes with superior color fastness to washing, light, and perspiration for the apparel and home furnishing sectors.
• Specialty Ink Formulation: Used in the synthesis of pigments for inks requiring high stability and intensity, such as those for digital textile printing.
• Functional Colorants: Serves as a building block for creating colorants with specific functional properties for technical textiles and non-textile applications.
• Research & Development: A valuable chemical entity for R&D laboratories focusing on novel chromophore design and dye chemistry.
• Paper Coloring: Potential use in the development of specialized dyes for high-grade paper products.

Basic Information

Product Name	2,7-Naphthalenedisulfonic Acid, 5-4-Chloro-6-4-2-(Sulfooxy)Ethylsulfonylphenylamino-1,3,5-Triazin-2-Ylamino-4-Hydroxy-3-(3-Sulfophenyl)Azo-, Tetrasodium Salt
CAS No.	135292-05-6
Molecular Formula	C31H21ClN7Na4O19S6 (or related salt form)
Molecular Weight	Contact for details
Synonyms	Tetrasodium 5-[[4-chloro-6-[[4-[2-(sulfooxy)ethylsulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(3-sulfophenyl)azo]naphthalene-2,7-disulfonate
Reactive Dye Intermediate 135292-05-6
C.I. Reactive Black 5 (related precursor)
Polyazo Reactive Dye Intermediate
Naphthalene-based Tetrasulfonate Dye Intermediate
Triazinyl Azo Dye Intermediate
Contact for additional trade names and aliases.
EINECS	Contact for details

Quality Control

Our production of this reactive dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity suitable for industrial synthesis. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles 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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect performance. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95% (or as per grade)
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Contact for details

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