Description

Bis(3-Mercaptopropanoic Acid)2,2-Bis(Hydroxymethyl)-1,3-Propanediyl Ester is a specialized multifunctional thiol compound, also known as a pentaerythritol tetrakis(3-mercaptopropionate) derivative. This chemical is valued for its ability to act as a highly efficient cross-linking agent and chain transfer agent in polymer synthesis and modification. It is primarily sought by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced material research for developing polymers with tailored mechanical and thermal properties.

Application

• Cross-linking agent for UV-curable resins and coatings, enhancing scratch resistance and durability.
• Chain transfer agent (CTA) in radical polymerization to control molecular weight and polymer architecture.
• Key intermediate in the synthesis of specialty polymers and high-performance elastomers.
• Component in adhesive formulations to improve flexibility and adhesion strength.
• Modifier for epoxy resins, imparting improved impact resistance and reduced shrinkage.
• Research and development of novel polymeric materials with specific thiol-ene click chemistry applications.

Basic Information

Product Name	Bis(3-Mercaptopropanoic Acid)2,2-Bis(Hydroxymethyl)-1,3-Propanediyl Ester
CAS No.	7539-05-1
Molecular Formula	C17H28O8S2
Molecular Weight	424.53 g/mol
Synonyms	Pentaerythritol Tetrakis(3-mercaptopropionate); PETMP; 3-Mercaptopropionic Acid Pentaerythritol Tetraester; Pentaerythritol Tetrakis(3-mercaptopropanoate); Tetrakis(3-mercaptopropionyloxymethyl)methane; 1,3-Propanediol, 2,2-bis(hydroxymethyl)-, bis(3-mercaptopropanoate); Pentaerythritol Tetra(3-mercaptopropionate); Thiol-functional Pentaerythritol Ester
EINECS	231-413-6

Quality Control

Our production of Bis(3-Mercaptopropanoic Acid)2,2-Bis(Hydroxymethyl)-1,3-Propanediyl Ester adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and GC for residual solvents, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with each shipment to guarantee traceability and consistency.

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). This product is easily oxidized (store under inert atmosphere) and is light-sensitive. Keep away from strong oxidizing agents, strong bases, and sources of heat.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Thiol Content (Titration)	Contact for details
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.510 - 1.520
Density (20°C)	1.25 - 1.30 g/cm³

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