Description

3-Mercaptopropionic Acid Isopropyl Ester is a versatile organosulfur compound valued for its dual functional groups, which make it an effective intermediate and chain transfer agent. Its primary commercial significance lies in its ability to modify polymer properties and act as a precursor in organic synthesis. This product is essential for manufacturers in the polymer, pharmaceutical, and specialty chemical industries seeking to control molecular weight or introduce specific functionalities.

Application

• Polymer Industry: Acts as a highly effective chain transfer agent (CTA) in free-radical polymerization processes, such as for acrylics and styrenics, to control molecular weight and polydispersity.
• Pharmaceutical Intermediates: Serves as a key building block for synthesizing active pharmaceutical ingredients (APIs) and other bioactive molecules containing thiol or ester functionalities.
• Lubricant & Fuel Additives: Used in the formulation of extreme pressure (EP) additives and antioxidants to enhance performance and stability.
• Crosslinking Agent: Employed in the production of specialty resins, coatings, and adhesives where sulfur-based crosslinks are required.
• Chemical Synthesis: Functions as a versatile reagent for introducing the 3-mercaptopropionate moiety into more complex organic structures.
• Rubber & Elastomer Production: Utilized as a modifier or curing agent to alter the physical properties of synthetic rubbers.

Basic Information

Product Name	3-Mercaptopropionic Acid Isopropyl Ester
CAS No.	7383-64-4
Molecular Formula	C6H12O2S
Molecular Weight	148.22 g/mol
Synonyms	Isopropyl 3-Mercaptopropionate; Isopropyl β-Mercaptopropionate; 3-Mercaptopropionic Acid Isopropyl Ester; Isopropyl 3-Sulfanylpropanoate; Isopropyl Ester of 3-Mercaptopropionic Acid; β-Mercaptopropionic Acid Isopropyl Ester; Propanoic acid, 3-mercapto-, 1-methylethyl ester; 1-Methylethyl 3-mercaptopropanoate
EINECS	230-964-6

Quality Control

Our 3-Mercaptopropionic Acid Isopropyl Ester is produced under strict quality management systems. Every batch undergoes comprehensive analytical testing, including assay, purity, and impurity profile determination via GC and/or HPLC, to ensure it meets exacting specifications for industrial and fine chemical applications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area under an inert atmosphere (e.g., nitrogen) to minimize oxidation. Recommended storage temperature is 2-8°C for extended shelf life. Keep away from heat, sparks, open flames, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.460 - 1.470
Density (g/mL, 20°C)	1.040 - 1.080

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