Description

Mercaptomethyl Methacrylate is a bifunctional monomer containing both a polymerizable methacrylate group and a reactive thiol group. This unique structure makes it a critical intermediate for introducing thiol functionality into polymer chains, enabling cross-linking, chain transfer, and surface modification. It is essential for manufacturers in the polymer, coatings, and adhesive industries seeking to enhance material properties such as adhesion, flexibility, and chemical resistance.

Application

• Cross-linking Agent in acrylic and other polymer systems to improve thermal and mechanical properties.
• Chain Transfer Agent in free-radical polymerization to control molecular weight and polymer architecture.
• Surface Modifier for particles and fillers to improve dispersion and compatibility in polymer matrices.
• Adhesive Formulations, particularly for UV-curable systems where the thiol group participates in thiol-ene reactions.
• Dental and Biomedical Materials as a component in resin-based composites and cements.
• Optical Materials for lenses and coatings with high refractive index.
• Antioxidant Precursor in the synthesis of polymer additives.

Basic Information

Product Name	Mercaptomethyl Methacrylate
CAS No.	94201-46-4
Molecular Formula	C5H8O2S
Molecular Weight	132.18 g/mol
Synonyms	2-(Mercaptomethyl)-2-propenoic acid methyl ester; Methacryloyloxymethyl mercaptan; (Methacryloyloxy)methyl mercaptan; MMA-SH; Mercaptomethyl 2-methyl-2-propenoate; Thiomethyl methacrylate; 2-Methyl-2-propenoic acid (mercaptomethyl) ester
EINECS	Contact for details

Quality Control

Our Mercaptomethyl Methacrylate is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay by GC or HPLC and impurity profiling, to ensure it meets the high-purity standards required for sensitive polymerization processes. A Certificate of Analysis (COA) detailing specific results is provided with every shipment.

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 2-8°C to minimize oxidation and polymerization. Keep away from heat, sparks, and open flame. This product is easily oxidized (store under inert atmosphere).

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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