Description

Pentasodium 2-[[8-[[4-chloro-6-[[3-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-1-hydroxy-3,6-disulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate is a high-performance, water-soluble reactive dye intermediate characterized by its complex poly-sulphonated azo-triazine structure. This compound is engineered to provide exceptional color strength and covalent bonding properties to cellulosic fibers, ensuring superior wash and light fastness in the final textile product. It is a critical raw material for dye manufacturers and specialty chemical producers serving the global textile, leather, and paper coloration industries.

Application

• Primary use in the synthesis of high-grade reactive dyes for cotton, viscose, and other cellulosic fabrics.
• Manufacturing of dyes for exhaust dyeing and continuous dyeing processes in the textile industry.
• Production of colorants for leather finishing and paper coloration where high wet-fastness is required.
• Key intermediate for developing specialty inks and pigments with enhanced solubility and stability.
• Used in research and development for creating novel chromophores and functional dyes with specific optical properties.

Basic Information

Product Name	Pentasodium 2-[[8-[[4-chloro-6-[[3-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-1-hydroxy-3,6-disulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate
CAS No.	77365-64-1
Molecular Formula	C41H22ClN8Na5O22S6
Molecular Weight	~1410.5 g/mol (Contact for exact details)
Synonyms	Reactive Black 5 Intermediate; C.I. Reactive Black 5 Sodium Salt; Pentasodium 6-amino-4-hydroxy-3-[[7-sulfo-4-[(4-sulfophenyl)azo]-1-naphthyl]azo]-5-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-2,7-naphthalenedisulfonate (related structure); Azo Triazine Dye Intermediate; Sulphonated Azo Dye; CAS 77365-64-1; Reactive Dye Precursor
EINECS	Contact for details

Quality Control

Our production of this reactive dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical methods including HPLC for purity, spectrophotometry for color strength, and titration for functional group analysis. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to support your quality assurance and regulatory compliance 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 sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100% ± 5% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	Max. 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.