Description

Pentaerythritol Tetra(3-Mercaptopropionate) is a tetrafunctional thiol compound, widely recognized as a key crosslinking agent and chain transfer agent in polymer chemistry. Its value lies in its ability to introduce multiple thiol groups into a system, enabling efficient thiol-ene click reactions, polymer modification, and the formation of high-performance networks. This product is essential for manufacturers in the polymer, coatings, adhesives, and advanced materials sectors seeking to enhance properties like flexibility, adhesion, and curing efficiency.

Application

• Crosslinking Agent for Polymers: Used in the production of polyurethanes, epoxy resins, and acrylics to improve mechanical strength, chemical resistance, and thermal stability.
• Thiol-Ene Click Chemistry: Serves as a versatile tetra-thiol component in photo-initiated or thermally initiated thiol-ene reactions for creating precise polymer networks and surface modifications.
• Chain Transfer Agent (CTA): Controls molecular weight and polydispersity in radical polymerizations, such as in the synthesis of acrylic resins and rubber.
• Adhesive & Sealant Formulations: Imparts enhanced curing speed, adhesion, and flexibility to industrial and construction adhesives.
• Optical Material Production: Utilized in the manufacture of high-refractive-index lenses and optical coatings due to its ability to form clear, durable matrices.
• Surface Modification & Coatings: Acts as a adhesion promoter and modifier in specialty coatings to improve substrate wetting and durability.

Basic Information

Product Name	Pentaerythritol Tetra(3-Mercaptopropionate)
CAS No.	7575-23-7
Molecular Formula	C17H28O8S4
Molecular Weight	488.66 g/mol
Synonyms	PETMP; Pentaerythritol Tetrakis(3-mercaptopropionate); Tetrakis(3-mercaptopropionyloxymethyl)methane; 3-Mercaptopropionic Acid Pentaerythritol Tetraester; Pentaerythritol Tetrathiolglycolate; Tetra(3-mercaptopropionyloxymethyl)methane; Pentaerythritol Tetra(3-mercaptopropanoate); Pentaerythritol Tetrakis(β-mercaptopropionate)
EINECS	231-472-0

Quality Control

Our Pentaerythritol Tetra(3-Mercaptopropionate) is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay, impurity profiling, and physical property verification, to ensure it meets precise specifications for industrial and research applications. A Certificate of Analysis (COA) detailing purity, thiol content, and other critical parameters is provided with every shipment to guarantee consistency and performance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product 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 bases, and sources of heat.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Thiol Content)	≥ 98.0 %
Purity (HPLC)	≥ 99.0 %
Refractive Index (n20D)	1.520 - 1.530
Density (20°C)	1.28 - 1.32 g/cm³
Water Content (KF)	≤ 0.2 %

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