Description

7-[4-[4-Chloro-6-(p-Vinylsulfonylanilino)-1,3,5-Triazin-2-Ylamino]-2-Ureidophenylazo]-1,3,6-Naphthalenetrisulfonic Acid Trisodium Salt is a high-purity, reactive dye intermediate of significant commercial importance. Its core value lies in its triazine and vinyl sulfone functional groups, which enable strong covalent bonding with substrates like cellulose and polyamide fibers. This compound is essential for manufacturers in the textile, leather, and specialty paper industries seeking to produce vibrant, wash-fast colors.

Application

• Reactive Dye Synthesis: Primary intermediate for manufacturing high-performance fiber-reactive dyes, particularly for cotton, viscose, and other cellulosic materials.
• Textile Printing & Dyeing: Used in formulations for printing inks and dye baths to achieve excellent color yield and superior wet fastness properties.
• Leather Coloring: Key component in dye systems for leather finishing, providing deep, uniform coloration with good lightfastness.
• Paper Dyeing: Employed in the production of specialty colored papers where high color stability is required.
• Biomolecule Labeling: Potential use in research applications for labeling proteins or other biomolecules due to its reactive vinyl sulfone group.
• Chemical Research: Serves as a valuable building block in organic synthesis and the development of new chromophoric systems.

Basic Information

Item	Details
Product Name	7-[4-[4-Chloro-6-(p-Vinylsulfonylanilino)-1,3,5-Triazin-2-Ylamino]-2-Ureidophenylazo]-1,3,6-Naphthalenetrisulfonic Acid Trisodium Salt
CAS No.	95042-29-8
Molecular Formula	C29H20ClN9Na3O13S4
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 Vinyl Sulfone Intermediate; C.I. Reactive Black 5 VS Form; 4-Amino-5-hydroxy-6-[(4-[(2-(sulfonatooxy)ethyl)sulfonyl]phenyl]azo]-2,7-naphthalenedisulfonic Acid Trisodium Salt (related); Vinylsulfonyl Reactive Dye Precursor; Trisodium 7-[4-[4-chloro-6-[(4-ethenylsulfonylphenyl)amino]-1,3,5-triazin-2-yl]amino]-2-ureidophenyl]azo]-1,3,6-naphthalenetrisulphonate; Azo-Triazine Dye Intermediate; p-Vinylsulfonyl Aniline Triazine Derivative
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 high chemical purity. Each lot is analyzed using advanced techniques including HPLC and spectroscopic methods to verify identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every shipment to support your quality assurance processes.

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

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Clear solution at 1%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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