Description

3-[(4-Methoxyphenyl)Azo]-4-Hydroxy-5-(4-Methylphenylsulfonylamino)-2,7-Naphthalenedisulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate and specialty chemical. This compound is valued for its precise molecular structure, which imparts specific chromophoric and functional properties critical for advanced applications. It is primarily sought by manufacturers in the dye and pigment, pharmaceutical, and advanced materials research sectors for synthesizing high-performance colorants and functional molecules.

Application

• Key intermediate for the synthesis of high-value, water-soluble azo dyes and pigments.
• Used in the production of specialized colorants for inks, textiles, and coatings requiring specific light-fastness and solubility profiles.
• Potential precursor in the development of pharmaceutical active ingredients or diagnostic agents due to its sulfonic acid and azo functionalities.
• Employed in analytical chemistry as a reagent or standard for method development and calibration.
• Research chemical for developing novel functional materials, such as sensors or light-harvesting complexes.
• May serve as a photographic chemical or in other imaging technologies.

Basic Information

Product Name	3-[(4-Methoxyphenyl)Azo]-4-Hydroxy-5-(4-Methylphenylsulfonylamino)-2,7-Naphthalenedisulfonic Acid Disodium Salt
CAS No.	72796-91-9
Molecular Formula	C24H19N3Na2O10S3
Molecular Weight	659.58 g/mol
Synonyms	Acid Red 337; C.I. 17200; 2,7-Naphthalenedisulfonic acid, 3-[(4-methoxyphenyl)azo]-4-hydroxy-5-[(4-methylphenyl)sulfonyl]amino]-, disodium salt; Disodium 3-[(4-methoxyphenyl)azo]-4-hydroxy-5-[(toluene-4-sulfonyl)amino]naphthalene-2,7-disulphonate; 5-[(4-Methylphenyl)sulfonyl]amino]-3-[(4-methoxyphenyl)azo]-4-hydroxynaphthalene-2,7-disulfonic acid disodium salt; Toluene-4-sulphonamide derivative of an azo dye
EINECS	Contact for details

Quality Control

Our production of 3-[(4-Methoxyphenyl)Azo]-4-Hydroxy-5-(4-Methylphenylsulfonylamino)-2,7-Naphthalenedisulfonic Acid Disodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing all critical parameters are provided and available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, handling and storage procedures should minimize exposure to direct light to preserve product integrity.

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	Contact for details
Heavy Metals	< 20 ppm
Solubility (Water)	Freely soluble

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