Description

1,5-Naphthalenedisulfonic acid, 2-8-4-chloro-6-8-hydroxy-4,6-disulfo-7-4-2-(sulfooxy)ethylsulfonylphenylazo-1-naphthalenylamino-1,3,5-triazin-2-ylamino-1-hydroxy-3,6-disulfo-2-naphthalenylazo-, potassium sodium salt is a high-performance, water-soluble reactive dye intermediate characterized by its complex polyazo and triazine structure. This compound is engineered to deliver exceptional color strength, wash-fastness, and covalent bonding to cellulosic fibers, making it a critical component for premium textile coloration. It is primarily utilized by manufacturers in the textile dyeing and printing, specialty ink, and advanced material coating industries seeking vibrant and durable hues.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-grade reactive dyes used in cotton, viscose, and other cellulose fiber dyeing.
• Textile Printing Inks: Provides intense and stable coloration for digital and screen printing applications on natural fabrics.
• Leather Coloring: Used in the production of dyes for achieving deep, uniform shades on leather goods with good fastness properties.
• Paper Dyeing: Employed in specialty paper production where high color yield and lightfastness are required.
• Functional Material Coatings: Potential use in creating colored layers for sensors or light-filtering materials due to its chromophoric structure.
• Research & Development: Serves as a sophisticated chemical building block in organic synthesis and new chromophore development for academic and industrial R&D.

Basic Information

Item	Details
Product Name	1,5-Naphthalenedisulfonic acid, 2-8-4-chloro-6-8-hydroxy-4,6-disulfo-7-4-2-(sulfooxy)ethylsulfonylphenylazo-1-naphthalenylamino-1,3,5-triazin-2-ylamino-1-hydroxy-3,6-disulfo-2-naphthalenylazo-, potassium sodium salt
CAS No.	146632-12-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 Analog Intermediate; Polyazo Reactive Dye Intermediate; Potassium Sodium Salt of a Sulfonated Azo-Triazine Dye; C.I. Reactive Black 5 related compound; 1,3,5-Triazine-2-amino linked naphthalene disulfonic acid azo dye; Multisulfonated Azo Dye Intermediate; Textile Reactive Dye Precursor
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical testing including HPLC for purity, spectrophotometry for color strength, and titration for active content. A detailed Certificate of Analysis (COA) documenting all relevant specifications is provided with each 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 room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after use to prevent moisture absorption, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90%
Color Strength	95 - 105% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	Max. 20 ppm

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