Description

Benzenesulfonic Acid,3-[[4-[[5-Cyano-6-[(2-Hydroxyethyl)Amino]-4-Methyl-2-[[2-(4-Sulfophenyl)Ethyl]Amino]-3-Pyridinyl]Azo]-2,5-Dimethylphenyl]Azo]-,Disodium Salt is a high-purity, water-soluble anionic dye intermediate with a complex polyazo structure. This compound is valued for its ability to impart strong, vibrant color and excellent light and wash fastness properties when incorporated into final dye formulations. It is primarily required by manufacturers in the textile and specialty chemical industries for the synthesis of reactive and direct dyes.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-performance reactive dyes for cotton, viscose, and other cellulosic fibers.
• Direct Dye Manufacturing: Used in the production of direct dyes, offering good substantivity to cellulose materials without the need for a mordant.
• Specialty Ink Formulations: Employed in the creation of colorants for high-quality inkjet and other specialty printing inks requiring specific chromaticity and stability.
• Paper Coloring: Suitable for the coloration of paper and paperboard where water solubility and color strength are critical.
• Leather Dyeing: Used in the formulation of dyes for leather finishing, providing deep, uniform shades.
• Research & Development: Serves as a precise chemical entity for R&D laboratories developing new chromophores and studying dye properties.

Basic Information

Item	Details
Product Name	Benzenesulfonic Acid,3-[[4-[[5-Cyano-6-[(2-Hydroxyethyl)Amino]-4-Methyl-2-[[2-(4-Sulfophenyl)Ethyl]Amino]-3-Pyridinyl]Azo]-2,5-Dimethylphenyl]Azo]-,Disodium Salt
CAS No.	74499-55-1
Molecular Formula	C33H32N10Na2O8S2
Molecular Weight	806.77 g/mol
Synonyms	Reactive Dye Intermediate 74499-55-1; C.I. Reactive Orange 107 (related); Polyazo Benzenesulfonic Acid Disodium Salt; 3-[[4-[[5-Cyano-6-[(2-hydroxyethyl)amino]-4-methyl-2-[[2-(4-sulfophenyl)ethyl]amino]-3-pyridinyl]azo]-2,5-dimethylphenyl]azo]benzenesulfonic acid, disodium salt; Azo Dye Intermediate; Water-soluble Anionic Dye Intermediate; Disodium 3-[[4-[[5-cyano-6-[(2-hydroxyethyl)amino]-4-methyl-2-[[2-(4-sulfonatophenyl)ethyl]amino]pyridin-3-yl]azo]-2,5-dimethylphenyl]azo]benzenesulfonate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed using advanced techniques like HPLC to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every 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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Solubility (in Water)	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.