Description

6-Amino-5-[[4-[[3-Chloro-1-Oxo-3-(Phenylsulphonyl)Propyl]Amino]-2-[(Ethylphenylamino)Sulphonyl]Phenyl]Azo]Naphthalene-1,3-Disulphonic Acid, Sodium Salt is a high-purity, complex azo dye intermediate essential for producing vibrant and colorfast pigments. Its intricate molecular structure provides excellent chromophore properties, making it a critical component for achieving specific, high-performance shades. This compound is primarily utilized by manufacturers in the specialty dyes and pigments industry, serving as a key building block for advanced colorants used in inks, coatings, and specialty polymers.

Application

• Primary Intermediate for Reactive Dyes: A key precursor in the synthesis of high-grade reactive dyes for textile coloring, particularly for cotton and cellulose fibers.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for industrial inks, including those for packaging and security printing.
• Specialty Coatings: Incorporated into formulations for specialty coatings and paints requiring specific, durable color properties.
• Functional Dyes: Serves as a starting material for creating functional dyes used in non-textile applications, such as in optical data storage or laser dyes.
• Research & Development: Utilized in R&D laboratories for developing novel chromophores and studying structure-color relationships in dye chemistry.

Basic Information

Item	Details
Product Name	6-Amino-5-[[4-[[3-Chloro-1-Oxo-3-(Phenylsulphonyl)Propyl]Amino]-2-[(Ethylphenylamino)Sulphonyl]Phenyl]Azo]Naphthalene-1,3-Disulphonic Acid, Sodium Salt
CAS No.	83784-03-6
Molecular Formula	C33H28ClN5Na2O10S4
Molecular Weight	884.28 g/mol
Synonyms	Acid Red 337 (C.I. 17215); Sodium 6-amino-5-{[4-({3-chloro-1-oxo-3-[(phenylsulfonyl)methyl]propyl}amino)-2-{[(ethylphenyl)amino]sulfonyl}phenyl]diazenyl}naphthalene-1,3-disulfonate; C.I. Acid Red 337; 6-Amino-5-{[4-({3-chloro-1-oxo-3-[(phenylsulfonyl)methyl]propyl}amino)-2-{[(ethylphenyl)amino]sulfonyl}phenyl]diazenyl}naphthalene-1,3-disulfonic acid disodium salt; Reactive Dye Intermediate AR-337; Naphthalene dye intermediate 83784-03-6
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC to verify the assay and impurity profile. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and related substances is provided with every 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 to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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