Description

Disodium 7-[[4,6-Bis[(2-Hydroxyethyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-4-Hydroxy-3-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble reactive dye intermediate of significant commercial importance. Its core value lies in its ability to form strong covalent bonds with cellulosic fibers, resulting in exceptional wash and light fastness properties. This compound is essential for manufacturers in the textile and specialty chemical industries seeking to produce brilliant and durable shades, particularly in reactive dye applications.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used on cotton, viscose, and other cellulosic fibers.
• Textile Dyeing and Printing: Imparts vibrant, colorfast hues in exhaust, pad-batch, and continuous dyeing processes for apparel and home textiles.
• Specialty Ink Formulation: Used in the production of inks for digital textile printing, requiring high solubility and color strength.
• Leather Coloring: Employed in dyeing leather goods where deep penetration and fastness are critical.
• Paper Coloring: Suitable for high-grade paper products requiring specific color properties and stability.
• Research & Development: Serves as a precise chemical entity for developing new chromophores and studying dye-fiber interactions in academic and industrial R&D.

Basic Information

Item	Detail
Product Name	Disodium 7-[[4,6-Bis[(2-Hydroxyethyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-4-Hydroxy-3-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate
CAS No.	68201-95-6
Molecular Formula	C31H28N10Na2O10S2
Molecular Weight	810.72 g/mol
Synonyms	Reactive Black 5 (Parent Dye); C.I. Reactive Black 5; Remazol Black B; Disodium 4-amino-5-hydroxy-3-[[4-[(4-sulfophenyl)azo]phenyl]azo]-6-[[4,6-bis[(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]naphthalene-2,7-disulfonate; Vinylsulfone Reactive Dye Intermediate; Azo Reactive Dye Intermediate; 68201-95-6; Reactive Dye Intermediate RB5
EINECS	Contact for details

Quality Control

Our production of this reactive dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high chemical purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profile 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 tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0

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