Description

2,2-Bis(Hydroxymethyl)Butyl 3-Mercaptopropionate is a specialty multifunctional thiol monomer, a key building block for advanced polymer synthesis. This compound matters for its ability to act as a chain transfer agent and crosslinker, imparting enhanced properties like improved flexibility, adhesion, and chemical resistance to final materials. Industries such as polymer manufacturing, coatings, adhesives, and sealants require this high-purity intermediate for developing high-performance products.

Application

• As a chain transfer agent (CTA) in radical polymerizations to control molecular weight and polymer architecture.
• As a crosslinking agent in the production of polyurethane, epoxy, and acrylic resins to enhance network density and durability.
• In the synthesis of high-performance coatings and adhesives requiring superior flexibility and chemical resistance.
• As a key intermediate for UV-curable resins and inks, contributing to rapid curing and final film properties.
• In the manufacture of optical materials and lenses where precise refractive index control is needed.
• For research and development of novel thiourethane and polythioether polymers with specialized characteristics.

Basic Information

Product Name	2,2-Bis(Hydroxymethyl)Butyl 3-Mercaptopropionate
CAS No.	67905-23-1
Molecular Formula	C10H20O5S
Molecular Weight	252.33 g/mol
Synonyms	2,2-Bis(hydroxymethyl)butyl 3-mercaptopropanoate; 3-Mercaptopropionic Acid 2,2-Bis(hydroxymethyl)butyl Ester; Trimethylolpropane Mono(3-mercaptopropionate); TMP Mono(3-MP); 2,2-Bis(hydroxymethyl)butyl β-mercaptopropionate; 3-Mercaptopropionic Acid Trimethylolpropane Monoester; Thiol Functional Polyol Ester; CAS 67905-23-1
EINECS	Contact for details

Quality Control

Our 2,2-Bis(Hydroxymethyl)Butyl 3-Mercaptopropionate is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen) in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its easily oxidized nature, minimize headspace and exposure to air after opening.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC or HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Acid Value	≤ 2.0 mg KOH/g
Refractive Index (20°C)	Contact for details
Density (20°C)	Contact for details

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