Description

Tetraethylene Glycol Bis(3-Mercaptopropionate) is a high-purity, multi-functional thiol compound widely used as a chain transfer agent and crosslinking modifier. Its value lies in its ability to precisely control polymer molecular weight and introduce reactive thiol groups for enhanced material properties. This product is essential for manufacturers in the polymer, adhesive, and advanced materials sectors seeking to fine-tune product performance and stability.

Application

• Polymer Synthesis: Acts as an efficient chain transfer agent (CTA) in radical polymerizations (e.g., acrylics, styrenics) to control molecular weight and polydispersity.
• Thiol-Ene Chemistry: Serves as a tetra-functional crosslinker in UV-curable coatings, adhesives, and resins due to its four reactive thiol groups.
• Optical Materials: Used in the formulation of high-refractive-index lenses and optical adhesives where precise curing and clarity are critical.
• Surface Modification: Imparts thiol functionality to polymer surfaces or nanoparticles for subsequent conjugation or improved adhesion.
• Rubber and Elastomer Production: Functions as a crosslinking co-agent or plasticizer modifier to enhance thermal stability and mechanical properties.
• Pharmaceutical Intermediates: Employed in the synthesis of specialized drug delivery systems and biodegradable polymers.

Basic Information

Product Name	Tetraethylene Glycol Bis(3-Mercaptopropionate)
CAS No.	68891-92-9
Molecular Formula	C18H34O8S2
Molecular Weight	442.58 g/mol
Synonyms	Tetraethylene Glycol Dimercaptopropionate; 3,3'-[Oxybis(2,1-ethanediyloxy-2,1-ethanediyloxy)]bis-1-propanethiol; Tetraglycol Dimercaptopropionate; TEGBMP; Bis(3-mercaptopropionyloxy)tetraethylene Glycol; 2,2'-(Ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl) bis(3-sulfanylpropanoate); Tetrathiol Crosslinker
EINECS	Contact for details

Quality Control

Every batch of Tetraethylene Glycol Bis(3-Mercaptopropionate) is produced under strict quality management systems. We employ advanced analytical techniques, including GC and titration, to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C) under an inert atmosphere (e.g., nitrogen) to prevent oxidation. Keep away from heat, sparks, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Thiol Content	≥ 7.0 meq/g
Water Content (KF)	≤ 0.2%
Refractive Index (n20D)	1.490 - 1.500
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.