Description

7-Benzoylamino-4-Hydroxy-3-[[2-Methoxy-4-[(4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its ability to impart vibrant and stable color properties in demanding industrial applications. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking reliable and consistent performance in their formulations.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-performance, water-soluble azo dyes for textiles, leather, and paper.
• Textile Dyeing and Printing: Used in the production of dyes for coloring natural and synthetic fibers, offering good wash and light fastness.
• Inkjet and Printing Inks: Serves as a colorant precursor in the formulation of inks for digital and industrial printing applications.
• Specialty Pigments and Coatings: Employed in the development of pigments and colorants for paints, coatings, and plastics.
• Biological Staining Reagents: Potential use as an intermediate for histochemical stains and diagnostic reagents in laboratory settings.
• Research & Development: A valuable chemical for academic and industrial R&D focused on novel dye chemistry and material science.

Basic Information

Product Name	7-Benzoylamino-4-Hydroxy-3-[[2-Methoxy-4-[(4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	5873-27-8
Molecular Formula	C30H21N5Na2O9S2
Molecular Weight	729.62 g/mol
Synonyms	Acid Red 337; C.I. 17210; 7-Benzamido-4-hydroxy-3-((2-methoxy-4-((4-sulfophenyl)azo)phenyl)azo)-2-naphthalenesulfonic acid disodium salt; Benzenesulfonic acid, 4-((4-((7-(benzoylamino)-4-hydroxy-3-sulfo-2-naphthalenyl)azo)-3-methoxyphenyl)azo)-, disodium salt; 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((2-methoxy-4-((4-sulfophenyl)azo)phenyl)azo)-, disodium salt; C.I. Acid Red 337; Disodium 4-[(4-{[7-(benzoylamino)-4-hydroxy-3-sulphonato-2-naphthyl]azo}-3-methoxyphenyl)azo]benzenesulphonate
EINECS	227-525-5

Quality Control

Our production of 7-Benzoylamino-4-Hydroxy-3-[[2-Methoxy-4-[(4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and 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.

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). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which may affect product performance and stability.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
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.