Description

5-[[4-Chloro-6-(1-Naphthalenylamino)-1,3,5-Triazin-2-Yl]Amino]-4-Hydroxy-3-[(4-Methoxy-2-Sulfophenyl)Azo]2,7-Naphthalenedisulfonic Acid, Trisodium Salt is a high-purity, water-soluble anionic dye intermediate belonging to the class of reactive azo dyes. This compound is engineered for exceptional color strength and binding affinity to cellulosic and synthetic fibers, making it a critical component in the production of high-performance dyes. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking vibrant, wash-fast colors.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton, wool, and nylon dyeing.
• Textile Printing Inks: Used in the formulation of inks for digital and screen printing on fabrics, providing excellent sharpness and color yield.
• Leather Coloring: Employed in dye baths for leather goods, offering deep, uniform penetration and good lightfastness.
• Paper Dyeing: Suitable for coloring high-grade papers and specialty boards where color consistency is paramount.
• Research & Development: Serves as a reference standard and starting material in R&D labs for developing new chromophores and functional dyes.
• Specialty Coatings: Can be incorporated into coatings where specific color properties and chemical resistance are required.

Basic Information

Product Name	5-[[4-Chloro-6-(1-Naphthalenylamino)-1,3,5-Triazin-2-Yl]Amino]-4-Hydroxy-3-[(4-Methoxy-2-Sulfophenyl)Azo]2,7-Naphthalenedisulfonic Acid, Trisodium Salt
CAS No.	341026-59-3
Molecular Formula	C30H20ClN8Na3O12S3
Molecular Weight	925.17 g/mol
Synonyms	Reactive Black 5 Intermediate; Trisodium 5-[[4-chloro-6-(naphthalen-1-ylamino)-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(4-methoxy-2-sulfophenyl)diazenyl]naphthalene-2,7-disulfonate; C.I. Reactive Black 5, trisodium salt; 1-Naphthalenamine, 4-chloro-6-[[4-hydroxy-3-[(4-methoxy-2-sulfophenyl)azo]-2,7-disulfo-1-naphthalenyl]amino]-1,3,5-triazin-2-yl]-, trisodium salt; Azo Reactive Dye Intermediate; Acid Black 5G Trisodium Salt (related); Naphthalene trisulfonic acid derivative
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and reliability. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to verify critical parameters including purity, color value, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each 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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	98 - 102% (vs. Standard)
Moisture Content (KF)	≤ 5.0%
Water Solubility	Clear solution at 1%
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.