Description

Disodium 7-(Benzoylamino)-4-Hydroxy-3-[[2-Methyl-4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing vibrant and stable azo dyes and pigments, particularly for demanding applications requiring specific color fastness and chemical resistance. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of high-value, complex azo dyes for textiles, leather, and paper.
• Pigment Manufacturing: Used in the production of organic pigments for printing inks, including flexographic and gravure inks.
• Specialty Coatings: Employed in the formulation of industrial and automotive coatings where color stability and durability are paramount.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel dye chemistry, photochromic materials, or chemical sensors.
• Functional Dyes: Potential use in the development of dyes for non-textile applications, such as in lasers or as biological stains.

Basic Information

Item	Detail
Product Name	Disodium 7-(Benzoylamino)-4-Hydroxy-3-[[2-Methyl-4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate
CAS No.	5873-24-5
Molecular Formula	C30H21N5Na2O8S2
Molecular Weight	697.62 g/mol
Synonyms	Acid Red 337; C.I. 17210; Disodium 7-benzamido-4-hydroxy-3-[(2-methyl-4-[(4-sulfophenyl)azo]phenyl)azo]naphthalene-2-sulfonate; 7-Benzamido-4-hydroxy-3-[(2-methyl-4-[(4-sulfophenyl)azo]phenyl)azo]-2-naphthalenesulfonic acid disodium salt; Azo Rubine S; Azo Rubine; C.I. Acid Red 337; Benzenesulfonic acid, 4-[[2-methyl-4-[(7-(benzoylamino)-4-hydroxy-3-sulfo-2-naphthalenyl)azo]phenyl]azo]-, disodium salt
EINECS	Contact for details

Quality Control

Our production of Disodium 7-(Benzoylamino)-4-Hydroxy-3-[[2-Methyl-4-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate adheres to a stringent quality management system. Every batch is analyzed to ensure it meets precise chemical identity, purity, and compositional specifications critical for consistent dye synthesis. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment to guarantee traceability and performance reliability for your manufacturing process.

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 material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product quality and handling properties.

Specification

Item	Specification
Appearance	Reddish-brown to dark 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.