Description

Isooctyl 3-Mercaptopropionate is a specialized organosulfur compound widely utilized as a chain transfer agent and stabilizer in polymer chemistry. Its primary value lies in its ability to efficiently control polymer molecular weight and architecture, leading to improved material properties and process efficiency. This product is essential for manufacturers in the polymer, adhesive, and specialty chemical industries seeking to fine-tune the performance of acrylic and vinyl-based systems.

Application

• Polymer Synthesis: Acts as a highly effective chain transfer agent (CTA) in the free-radical polymerization of acrylics, methacrylates, and styrenics to control molecular weight and polydispersity.
• Adhesive Formulation: Used in the production of pressure-sensitive adhesives (PSAs) and structural adhesives to modify rheology and enhance peel strength.
• Coatings & Resins: Incorporated into coating formulations to regulate viscosity and film formation, improving application properties and final finish.
• Stabilizer Function: Serves as an auxiliary stabilizer or co-stabilizer in polymer systems to mitigate degradation during processing and extend product life.
• Specialty Monomer Production: Employed as an intermediate in the synthesis of other functional monomers and specialty chemicals.
• Rubber Modification: Utilized in the modification of synthetic rubbers to achieve specific elasticity and processing characteristics.

Basic Information

Product Name	Isooctyl 3-Mercaptopropionate
CAS No.	30374-01-7
Molecular Formula	C11H22O2S
Molecular Weight	218.36 g/mol
Synonyms	3-Mercaptopropionic Acid Isooctyl Ester; Isooctyl 3-Mercaptopropanoate; Isooctyl β-Mercaptopropionate; Isooctyl Ester of 3-Mercaptopropionic Acid; 2-Ethylhexyl 3-Mercaptopropionate (common trade name); Thioglycolic Acid Isooctyl Ester (related); Chain Transfer Agent CTA; Isooctyl Mercaptopropionate
EINECS	250-142-1

Quality Control

Our Isooctyl 3-Mercaptopropionate is produced under stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including Gas Chromatography (GC) and titration to verify critical parameters such as assay and mercaptan content. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C/59-77°F). Due to its easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term storage. Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Specific Gravity (20°C)	0.950 - 0.980
Refractive Index (20°C)	1.455 - 1.465
Water Content (KF)	≤ 0.1 %

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