Description

Dipentaerythritol Hexakis(3-Mercaptopropionate) is a high-purity, multi-functional thiol compound widely used as a crosslinking agent and chain transfer agent in advanced polymer synthesis. Its six reactive thiol (-SH) groups per molecule enable efficient network formation and precise control over polymer architecture and properties. This product is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producers of optical resins and high-performance composites seeking to enhance material durability and refractive index.

Application

• Optical Lens & Adhesive Resins: A key crosslinker in the production of high-refractive-index optical plastics for lenses, LED encapsulants, and optical adhesives.
• UV-Curable Coatings & Inks: Functions as a reactive diluent and thiol-ene click chemistry component for fast-curing, low-shrinkage, and flexible surface coatings.
• Polymer Modification & Chain Transfer Agent: Used to regulate molecular weight and introduce thiol end-groups in various polymerization processes (e.g., radical, epoxy-thiol).
• Sealants & Elastomers: Imparts enhanced flexibility, adhesion, and chemical resistance when incorporated into polysulfide or polyurethane-based formulations.
• Electronic Encapsulation Materials: Employed in potting compounds and underfill materials to improve thermal stability and mechanical protection for electronic components.
• 3D Printing Resins: Serves as a functional additive in photopolymer resins to modify toughness and reduce polymerization stress during printing.

Basic Information

Product Name	Dipentaerythritol Hexakis(3-Mercaptopropionate)
CAS No.	25359-71-1
Molecular Formula	C33H56O12S6
Molecular Weight	829.15 g/mol
Synonyms	DPETMP; Dipentaerythritol Hexa(3-mercaptopropionate); 3-Mercaptopropionic Acid Dipentaerythritol Ester; Hexakis(3-mercaptopropionyloxy)dipentaerythritol; Dipentaerythritol Hexakis(3-thiopropionate); Thiol-terminated Dipentaerythritol Ester; Multi-functional Thiol Crosslinker; 1,1,1-Tris[[3-[(3-mercapto-1-oxopropoxy)methyl]-3-[(3-mercapto-1-oxopropoxy)methyl]butoxymethyl]ethyl] Propane
EINECS	Contact for details

Quality Control

Our Dipentaerythritol Hexakis(3-Mercaptopropionate) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay, thiol content determination, and impurity profiling, to ensure consistent high purity and performance. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We support compliance with relevant global regulatory frameworks, including REACH.

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, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve thiol functionality. Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Thiol Content	≥ 5.8 mmol/g
Color (APHA)	≤ 100
Water Content (KF)	≤ 0.2%

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