Description

Tetrasodium 2-[[4-[[4-[[4-chloro-6-[N-(sulphonatomethyl)anilino]-1,3,5-triazin-2-yl]amino]-7-sulphonato-1-naphthyl]azo]-5-methoxy-o-tolyl]azo]benzene-1,4-disulphonate is a high-purity, water-soluble anionic dye belonging to the reactive dye class, characterized by its complex polyazo and triazine structure. This compound is engineered for exceptional color strength and fastness properties, making it a critical component for achieving durable and vibrant coloration. It is primarily utilized by manufacturers in the textile and specialty chemical industries who require reliable, high-performance dyes for demanding applications.

Application

• Textile Dyeing and Printing: Primary application for dyeing cellulosic fibers (e.g., cotton, viscose) and their blends, offering excellent wash and light fastness.
• Leather Coloration: Used in the dyeing of leather goods, providing deep, uniform shades with good penetration.
• Paper Coloring: Employed in the production of specialty colored papers and paper products.
• Ink Formulation: A key component in the manufacture of certain types of industrial inks, including inks for textiles and plastics.
• Research & Development: Serves as a standard or intermediate in chemical research for developing new dye molecules and studying chromophore systems.

Basic Information

Product Name	Tetrasodium 2-[[4-[[4-[[4-chloro-6-[N-(sulphonatomethyl)anilino]-1,3,5-triazin-2-yl]amino]-7-sulphonato-1-naphthyl]azo]-5-methoxy-o-tolyl]azo]benzene-1,4-disulphonate
CAS No.	29779-15-5
Molecular Formula	C39H26ClN9Na4O16S4
Molecular Weight	1127.3 g/mol (approx.)
Synonyms	Reactive Black 5 (Tetrasodium Salt); C.I. Reactive Black 5; Remazol Black B; Lanasol Black B; Drimarene Black B; Sumifix Supra Black B; Tetrasodium 4-amino-5-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylazo)-2,7-naphthalenedisulfonate (related isomer); Tetrasodium 8-[[4-[[4-[[4-chloro-6-[(methylphenylamino)sulfonyl]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]azo]-1-naphthyl]azo]-5-oxo-1-(4-sulfophenyl)-4-[[4-sulfophenyl]azo]-3H-pyrazole-3-carboxylate (common alternative naming).
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 2-[[4-[[4-[[4-chloro-6-[N-(sulphonatomethyl)anilino]-1,3,5-triazin-2-yl]amino]-7-sulphonato-1-naphthyl]azo]-5-methoxy-o-tolyl]azo]benzene-1,4-disulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and impurity profile, spectrophotometry for color strength, and verification of key physical parameters. A detailed Certificate of Analysis (COA) documenting these results is provided with each shipment to ensure traceability and compliance with your specifications.

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 (moisture-sensitive) nature, the container must be kept tightly sealed when not in use 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)	≥ 90% (Dye Content)
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Completely soluble
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.