Description

4,4'-Bis[[4-(3-Chloro-2-Hydroxypropoxy)Phenyl]Azo]Stilbene-2,2'-Disulphonic Acid is a high-purity, functionalized azo-stilbene derivative with significant commercial value in advanced material synthesis. Its molecular structure, featuring dual azo linkages, sulphonic acid groups, and reactive chlorohydrin moieties, makes it a versatile intermediate for creating polymers and dyes with specific optical and chemical properties. This compound is essential for industrial R&D and production in sectors requiring specialized chromophores or cross-linking agents.

Application

• Optical Brightening Agent (OBA) Intermediate: Serves as a key precursor in the synthesis of high-performance fluorescent whitening agents for paper, textiles, and plastics.
• Functional Dye Synthesis: Used to manufacture specialized azo dyes and pigments for inks, coatings, and imaging technologies due to its chromophoric structure.
• Polymer Modification: Acts as a reactive monomer or cross-linking agent to introduce photo-responsive or ionic properties into advanced polymer systems.
• Liquid Crystal Materials: Employed in the research and development of dye-doped liquid crystals for display and electro-optical applications.
• Analytical Chemistry Reagent: Functions as a standard or a complexing agent in specific spectrophotometric and chromatographic analytical methods.
• Research Chemical: Utilized in academic and industrial laboratories for studying azo compound chemistry, photoisomerization, and supramolecular assembly.

Basic Information

Item	Details
Product Name	4,4'-Bis[[4-(3-Chloro-2-Hydroxypropoxy)Phenyl]Azo]Stilbene-2,2'-Disulphonic Acid
CAS No.	94042-70-3
Molecular Formula	C38H34Cl2N4O12S2
Molecular Weight	889.72 g/mol
Synonyms	4,4'-Bis[4-(3-chloro-2-hydroxypropoxy)phenylazo]stilbene-2,2'-disulfonic acid; Stilbene derivative CAS 94042-70-3; Azo stilbene disulfonic acid derivative; 94042-70-3; Brightener intermediate; Fluorescent whitening agent intermediate; Reactive azo dye intermediate; Disodium 4,4'-bis[[4-(3-chloro-2-hydroxypropoxy)phenyl]azo]stilbene-2,2'-disulphonate (salt form)
EINECS	Contact for details

Quality Control

Our 4,4'-Bis[[4-(3-Chloro-2-Hydroxypropoxy)Phenyl]Azo]Stilbene-2,2'-Disulphonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent high-grade performance. Certificates of Analysis (COA) documenting 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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