Description

Benzenesulfonic Acid, 2,2-(1,2-Ethenediyl)Bis5-4-(3-Hydroxypropoxy)Phenylazo-, Disodium Salt is a high-purity, water-soluble anionic dye intermediate and functional chemical. This compound is valued for its strong chromophoric properties and ability to form stable complexes, making it a critical component in advanced material synthesis. It is primarily sought by manufacturers in the specialty dyes, optical materials, and high-performance polymer industries for applications requiring precise color control and chemical functionality.

Application

• Specialty Dye Manufacturing: Serves as a key intermediate for producing high-grade azo dyes and pigments used in textiles, inks, and coatings.
• Functional Polymer Synthesis: Used in the creation of polymers with specific optical or ionic properties for advanced material science applications.
• Optical Data Storage Media: A potential component in the formulation of dyes for recordable CDs (CD-R) and other optical storage devices.
• Liquid Crystal Displays (LCDs): Can be utilized in the synthesis of dyes for color filters and alignment layers in display technologies.
• Analytical Chemistry: Employed as a chromogenic agent or complexometric indicator in specific spectrophotometric analyses.
• Research & Development: Used in academic and industrial R&D for exploring new photonic materials and chemical sensors.

Basic Information

Product Name	Benzenesulfonic Acid, 2,2-(1,2-Ethenediyl)Bis5-4-(3-Hydroxypropoxy)Phenylazo-, Disodium Salt
CAS No.	73507-48-9
Molecular Formula	C34H34N4Na2O10S2
Molecular Weight	776.81 g/mol
Synonyms	2,2'-(1,2-Ethenediyl)bis[5-[4-(3-hydroxypropoxy)phenyl]azo]benzenesulfonic acid disodium salt; C.I. Direct Yellow 142; Direct Yellow 142; Solvent Yellow 163; Azo dye intermediate 73507-48-9; 1,2-Bis[5-(4-(3-hydroxypropoxy)phenylazo)-2-sulfophenyl]ethene disodium salt; Disodium 4,4'-[1,2-ethenediylbis(5-azo-2,1-phenyleneoxy-3,1-propanediyloxy-4,1-phenylene)]bis[benzenesulfonate]
EINECS	Contact for details

Quality Control

Our production of Benzenesulfonic Acid, 2,2-(1,2-Ethenediyl)Bis5-4-(3-Hydroxypropoxy)Phenylazo-, Disodium Salt adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed using advanced techniques including HPLC and spectrophotometry to verify identity, strength, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain 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	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, complete solution

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