Description

Disodium 6-Amino-5-[[4-(Benzoylamino)-2-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate known for its excellent chromophore properties. This compound is critical for manufacturers requiring consistent, high-quality colorants with strong tinctorial strength and good lightfastness. It is primarily utilized by producers of dyes and pigments for textiles, inks, and specialty coatings who demand reliable supply and strict adherence to technical specifications.

Application

• Primary intermediate for the synthesis of acid dyes and direct dyes used in textile coloration, particularly for nylon, silk, and wool.
• Key chromophore component in the manufacturing of pigments for inks, including packaging and printing inks.
• Used in the production of specialty dyes for leather and paper applications.
• Potential use as a colorant precursor in the formulation of functional dyes for non-textile applications.
• Serves as a research chemical for developing novel azo compounds with specific optical properties.

Basic Information

Item	Details
Product Name	Disodium 6-Amino-5-[[4-(Benzoylamino)-2-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	63192-51-8
Molecular Formula	C23H16N4Na2O8S2
Molecular Weight	590.50 g/mol
Synonyms	Acid Red 337; C.I. 17200; Disodium 6-amino-4-hydroxy-5-[[4-[(phenylcarbonyl)amino]-2-sulfophenyl]azo]-2-naphthalenesulfonate; 6-Amino-4-hydroxy-5-[[4-[(phenylcarbonyl)amino]-2-sulfophenyl]azo]-2-naphthalenesulfonic acid disodium salt; Benzenesulfonic acid, 4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-2-[(phenylcarbonyl)amino]-, disodium salt; Azo dye intermediate 63192-51-8
EINECS	Contact for details

Quality Control

Our production of Disodium 6-Amino-5-[[4-(Benzoylamino)-2-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed against rigorous internal specifications using advanced analytical techniques. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF)	≤ 5.0%
Sulfated Ash	≤ 20.0%
Water Solubility	Freely soluble

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