Description

3,3'-[1,2-Ethanediylbis(Thio)]Bis-1-Propanol is a sulfur-containing diol compound, also known as 2,2'-(Ethylenedithio)diethanol, with the CAS number 4756-21-2. This bifunctional molecule is valued for its ability to act as a versatile building block and cross-linking agent in advanced material synthesis. It is primarily needed by manufacturers in the polymer, pharmaceutical, and specialty chemical industries for applications requiring thioether linkages and terminal hydroxyl functionality.

Application

• Polymer Chemistry: Serves as a chain extender or cross-linking agent in the synthesis of polyurethanes, polyesters, and epoxy resins, imparting flexibility and chemical resistance.
• Pharmaceutical Intermediates: Used in the synthesis of drug candidates and active pharmaceutical ingredients (APIs) where the thioether and diol groups are key functional handles.
• Ligand Synthesis: Acts as a precursor for chelating ligands in coordination chemistry and catalyst design for various organic transformations.
• Surface Modification: Employed to create functionalized surfaces or self-assembled monolayers (SAMs) on metals and other substrates.
• Adhesive & Sealant Formulations: Functions as a reactive modifier to enhance the adhesion properties and durability of industrial adhesives and sealants.
• Specialty Surfactants: Can be utilized to synthesize novel surfactants and emulsifiers with unique properties for niche applications.

Basic Information

Product Name	3,3'-[1,2-Ethanediylbis(Thio)]Bis-1-Propanol
CAS No.	4756-21-2
Molecular Formula	C8H18O2S2
Molecular Weight	210.36 g/mol
Synonyms	2,2'-(Ethylenedithio)diethanol; Bis(2-hydroxyethylthio)ethane; 1,2-Bis(2-hydroxyethylthio)ethane; Ethylene bis(2-hydroxyethyl sulfide); 2,2'-(Ethane-1,2-diylbis(sulfanediyl))diethanol; 3,3'-(Ethane-1,2-diylbis(sulfanediyl))dipropan-1-ol; EDHES; Contact for additional trade names.
EINECS	225-287-9

Quality Control

Our 3,3'-[1,2-Ethanediylbis(Thio)]Bis-1-Propanol is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the specifications required for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources. The product may be hygroscopic; ensure containers are sealed after use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.520 - 1.530
Density (20°C)	1.15 - 1.20 g/cm³

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