Description

Ethyl 3-Mercaptopropionate is a versatile sulfur-containing ester with a distinctive thiol functionality. This compound is valued for its role as a key intermediate and building block in the synthesis of more complex molecules, particularly in the pharmaceutical and agrochemical sectors. Industries such as fine chemicals, flavors & fragrances, and polymer modification utilize this material for its ability to introduce thiol groups or act as a chain transfer agent. Its balanced reactivity and ester group make it a practical choice for various organic transformations.

Application

• Pharmaceutical Intermediate: A crucial building block for synthesizing active pharmaceutical ingredients (APIs), especially those containing sulfur moieties.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides where the thiol group is integral to biological activity.
• Flavor & Fragrance Industry: Serves as a precursor for sulfur-containing flavor compounds that impart meaty, roasted, or tropical notes.
• Polymer Chemistry: Functions as a chain transfer agent (CTA) in radical polymerizations to control molecular weight and as a modifier for specialty polymers.
• Organic Synthesis Reagent: Employed in Michael additions, thiol-ene "click" chemistry, and other reactions to introduce protected or free thiol groups.
• Crosslinking Agent: Used in the formulation of adhesives, sealants, and coatings that cure via thiol-based reactions.

Basic Information

Product Name	Ethyl 3-Mercaptopropionate
CAS No.	5466-06-8
Molecular Formula	C5H10O2S
Molecular Weight	134.20 g/mol
Synonyms	3-Mercaptopropionic Acid Ethyl Ester; Ethyl 3-Mercaptopropanoate; Ethyl β-Mercaptopropionate; 3-Thiopropionic Acid Ethyl Ester; Ethyl 3-Sulfanylpropanoate; EMP; Ethyl Ester of 3-Mercaptopropionic Acid
EINECS	226-764-1

Quality Control

Our Ethyl 3-Mercaptopropionate is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, purity, and impurity profile determination, to ensure it meets the high standards required for industrial and fine chemical applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be kept in the original packaging or in amber glass until use.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Refractive Index (n20/D)	1.456 - 1.460
Density (20°C)	1.090 - 1.110 g/mL
Water Content (KF)	≤ 0.5%

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