Description

Sodium 6-Amino-5-[[2-[(Ethylphenylamino)Sulphonyl]Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity azo dye intermediate and specialty chemical compound. This product is valued for its precise chemical structure, which is critical for synthesizing consistent and high-performance dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries seeking reliable intermediates for colorant production.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of acid dyes and direct dyes for textile fibers like nylon, silk, and wool.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for inks, plastics, and coatings.
• Specialty Colorants: Employed in the formulation of specialized dyes for leather, paper, and food packaging inks.
• Research & Development: A valuable compound for chemical R&D in developing new chromophores and functional dyes.
• Analytical Chemistry: Can be used as a standard or reagent in analytical methods for dye identification and quantification.

Basic Information

Product Name	Sodium 6-Amino-5-[[2-[(Ethylphenylamino)Sulphonyl]Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	70865-30-4
Molecular Formula	C24H20N5NaO6S2
Molecular Weight	569.56 g/mol
Synonyms	Acid Red 337 (Sodium Salt); C.I. 17200; 6-Amino-4-hydroxy-5-[[2-[(ethylphenylamino)sulfonyl]phenyl]azo]-2-naphthalenesulfonic acid sodium salt; Sodium 6-amino-4-hydroxy-5-[(2-[(N-ethylphenylamino)sulfonyl]phenyl)azo]-2-naphthalenesulfonate; Azo dye intermediate 70865-30-4; N-Ethyl-N-phenyl-4-[(4-sulfo-1-naphthyl)azo]-3-amino-benzenesulfonamide sodium salt; Benzenesulfonamide, N-ethyl-N-phenyl-4-[(4-sulfo-1-naphthyl)azo]-3-amino-, sodium salt
EINECS	Contact for details

Quality Control

Our Sodium 6-Amino-5-[[2-[(Ethylphenylamino)Sulphonyl]Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with each shipment to guarantee traceability and consistency for your production 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 stability and performance.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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