Description

Bis(2-Mercaptoethyl) 3,3'-Thiobispropionate is a specialized sulfur-containing organic compound, specifically a dithiol derivative. This chemical is valued for its dual functionality, serving as a versatile intermediate and a reactive modifier in advanced material synthesis. It is primarily sought by R&D and production teams in the polymer, pharmaceutical, and specialty chemical industries for applications requiring thiol-ene chemistry, cross-linking, or as a chain transfer agent.

Application

• Polymer Modification & Cross-linking Agent: Used to introduce thiol functional groups into polymer backbones for enhanced properties like adhesion, flexibility, and thermal stability.
• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs) and drug conjugates.
• Thiol-ene Click Chemistry: An essential component in UV-curable resins, adhesives, and coatings due to its efficient radical-mediated reactions.
• Chain Transfer Agent (CTA): Regulates molecular weight and polydispersity in radical polymerization processes for controlled polymer architectures.
• Ligand Synthesis for Metal Complexes: Utilized in preparing chelating agents and catalysts for various chemical transformations.
• Surface Functionalization: Modifies material surfaces (e.g., nanoparticles, gold surfaces) to impart specific chemical reactivity or biocompatibility.

Basic Information

Product Name	Bis(2-Mercaptoethyl) 3,3'-Thiobispropionate
CAS No.	67874-44-6
Molecular Formula	C10H18O4S3
Molecular Weight	298.44 g/mol
Synonyms	3,3'-Thiodipropionic Acid Bis(2-mercaptoethyl) Ester; 2,2'-(3,3'-Thiodipropionylbis(oxy))diethanethiol; Di(2-mercaptoethyl) 3,3'-thiodipropionate; Bis(2-sulfanylethyl) 3,3'-sulfanediyldipropionate; Dithiol-diester crosslinker; 67874-44-6
EINECS	Contact for details

Quality Control

Our Bis(2-Mercaptoethyl) 3,3'-Thiobispropionate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider maintaining under an inert atmosphere (e.g., nitrogen or argon) to preserve stability and purity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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