Description

4-[[3-Methoxy-4-[(4-Methoxyphenyl)Azo]Phenyl]Azo]Benzenesulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate and analytical reagent. This compound is valued for its consistent chromophoric properties and its role as a key building block in the synthesis of specialized dyes and pigments. It is primarily utilized by manufacturers in the colorant, textile, and research chemical industries seeking reliable and high-quality intermediates for their production processes.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a critical precursor in the synthesis of orange to red-shade azo dyes used in textiles, inks, and plastics.
• Analytical Chemistry Reagent: Employed as a chromogenic agent or indicator in various spectrophotometric and complexometric titration methods.
• Research & Development: Used in academic and industrial R&D for studying azo coupling reactions and developing new functional colorants.
• Specialty Chemical Synthesis: Acts as a building block for creating more complex sulfonated aromatic compounds with specific ionic or surfactant properties.

Basic Information

Product Name	4-[[3-Methoxy-4-[(4-Methoxyphenyl)Azo]Phenyl]Azo]Benzenesulfonic Acid Sodium Salt
CAS No.	72152-92-2
Molecular Formula	C20H17N4O5SNa
Molecular Weight	448.43 g/mol
Synonyms	Sodium 4-[(3-methoxy-4-[(4-methoxyphenyl)azo]phenyl)azo]benzenesulfonate; Benzenesulfonic acid, 4-[[3-methoxy-4-[(4-methoxyphenyl)azo]phenyl]azo]-, sodium salt; CI 14720; Acid Orange 67; Azo dye intermediate OA; 4-[(E)-[4-[(E)-(4-Methoxyphenyl)diazenyl]-2-methoxyphenyl]diazenyl]benzenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our production of 4-[[3-Methoxy-4-[(4-Methoxyphenyl)Azo]Phenyl]Azo]Benzenesulfonic Acid Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency meet the high standards required for industrial and research applications. A Certificate of Analysis (COA) detailing specific results for purity, heavy metals, and other critical parameters is provided with each shipment.

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 sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Clear solution

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