Description

4-[[4-Chloro-6-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-5-hydroxy-6-[(2-sulfophenyl)azo]-1,7-naphthalenedisulfonic acid tetrasodium salt is a high-performance, water-soluble reactive dye intermediate and colorant. This compound is valued for its ability to form strong covalent bonds with cellulosic fibers, providing excellent wash and light fastness properties. It is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries seeking to produce vibrant and durable colors.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-quality reactive dyes for cotton, viscose, and other cellulosic fibers.
• Textile Dyeing and Printing: Imparts bright, deep shades with superior fastness to washing, light, and rubbing in textile applications.
• Inkjet Inks: Used in the formulation of specialty inks for digital textile printing, offering high color strength and stability.
• Leather Coloring: Employed in dyeing leather to achieve consistent and durable coloration.
• Paper Dyeing: Suitable for coloring paper where high wet-fastness is required.
• Research & Development: Serves as a critical building block in chemical R&D for developing new chromophores and functional dyes.

Basic Information

Product Name	4-[[4-Chloro-6-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-5-hydroxy-6-[(2-sulfophenyl)azo]-1,7-naphthalenedisulfonic acid tetrasodium salt
CAS No.	73157-48-9
Molecular Formula	C29H19ClN8Na4O18S5
Molecular Weight	1087.2 g/mol (approx.)
Synonyms	Reactive Black 5 (Tetrasodium Salt); C.I. Reactive Black 5; Remazol Black B; Tetrasodium 4-amino-5-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-6-[(2-sulfophenyl)azo]-1,7-naphthalenedisulfonate; Levafix Black EB; Procion Black H-EXL; Drimarene Black K-2B; CAS 17095-24-8 (parent acid)
EINECS	Contact for details

Quality Control

Our production of 4-[[4-Chloro-6-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-5-hydroxy-6-[(2-sulfophenyl)azo]-1,7-naphthalenedisulfonic acid tetrasodium salt adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including purity, color strength, and solubility. Certificates of Analysis (COA) documenting these results are available upon request 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 room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 85% (as Tetrasodium Salt)
Color Strength	≥ 95% (vs. Standard)
Water Solubility	Clear solution at 1% w/v
Moisture Content	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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