Description

3-Mercaptopropionic Acid 2-Ethoxyethyl Ester is a specialized organosulfur compound that serves as a versatile intermediate and functional additive. Its molecular structure, featuring both a thiol (mercapto) group and an ester linkage, makes it a valuable reagent for introducing sulfur-containing moieties and modifying polymer properties. This product is primarily sought by manufacturers in the polymer, coatings, and specialty chemical industries for applications requiring adhesion promotion, cross-linking, or as a chain transfer agent.

Application

• Polymer Modification: Acts as a chain transfer agent (CTA) in free-radical polymerization to control molecular weight and polymer architecture.
• Adhesion Promoter: Used in coatings, sealants, and adhesive formulations to enhance bonding to various substrates, particularly metals.
• Cross-linking Agent: Utilized in the synthesis of cross-linked polymers and resins, where the thiol group participates in thiol-ene click chemistry reactions.
• Chemical Intermediate: Serves as a key building block for synthesizing more complex molecules in pharmaceutical and agrochemical research.
• Lubricant Additive: Incorporated as an extreme pressure (EP) or anti-wear additive in specialty lubricant formulations.
• Photopolymerization: Functions as a reactive diluent or modifier in UV-curable resin systems.

Basic Information

Product Name	3-Mercaptopropionic Acid 2-Ethoxyethyl Ester
CAS No.	91219-53-3
Molecular Formula	C7H14O3S
Molecular Weight	178.25 g/mol
Synonyms	2-(2-Ethoxyethoxy)ethyl 3-mercaptopropionate; 3-Mercaptopropionic Acid 2-(2-Ethoxyethoxy)ethyl Ester; Ethylene Glycol Monoethyl Ether 3-Mercaptopropionate; β-Mercaptopropionic Acid 2-Ethoxyethyl Ester; 2-Ethoxyethyl 3-Mercaptopropanoate; Thiol-functional Ester; CAS 91219-53-3
EINECS	Contact for details

Quality Control

Our production of 3-Mercaptopropionic Acid 2-Ethoxyethyl Ester adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay (by GC or HPLC), identity confirmation (IR), and impurity profiling, to ensure consistency and high purity. A Certificate of Analysis (COA) detailing all test results is provided with each shipment, guaranteeing traceability and compliance with your technical requirements.

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. Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Specific Gravity (20°C)	1.10 - 1.15
Refractive Index (n20D)	1.460 - 1.470

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