Description

Isononyl 3-Mercaptopropionate is a specialized organosulfur compound widely utilized as a chain transfer agent (CTA) and a reactive intermediate. Its primary value lies in its ability to precisely control polymer molecular weight and architecture during free-radical polymerization processes. This chemical is essential for manufacturers in the polymer and specialty chemical industries seeking to produce tailored acrylic resins, adhesives, and coatings with specific performance characteristics.

Application

• Chain Transfer Agent (CTA) in Acrylic Polymerization: Used to regulate molecular weight and polydispersity in the production of acrylic resins, polyacrylates, and methacrylates.
• Synthesis of Specialty Polymers: Serves as a key intermediate for introducing thiol functional groups into polymer backbones for cross-linking or further modification.
• Adhesive and Sealant Formulations: Imparts specific rheological and curing properties in high-performance industrial adhesives and sealants.
• Coating Resins: Employed in the manufacture of solvent-based and water-based coatings to enhance film formation, flexibility, and durability.
• Lubricant and Fuel Additive Intermediate: Acts as a precursor in the synthesis of extreme pressure (EP) additives and anti-wear agents.
• Photopolymer and UV-Curable Systems: Functions as a reactive diluent or modifier in resins cured by ultraviolet light.

Basic Information

Product Name	Isononyl 3-Mercaptopropionate
CAS No.	56841-50-0
Molecular Formula	C12H24O2S
Molecular Weight	232.38 g/mol
Synonyms	3-Mercaptopropionic Acid Isononyl Ester; Isononyl 3-Mercaptopropanoate; INMP; 3-(Isononyloxy)-3-oxopropane-1-thiol; Thioglycolic Acid Isononyl Ester (related); Chain Transfer Agent for Acrylics; Thiol Ester
EINECS	Contact for details

Quality Control

Our Isononyl 3-Mercaptopropionate is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including assay (GC/HPLC), identity confirmation (IR), and impurity profiling, to ensure it meets precise specifications for use in sensitive polymerization processes. Certificates of Analysis (COA) documenting purity, color, and specific gravity are provided with every shipment to guarantee batch-to-batch consistency and reliability.

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 prevent oxidation. Recommended storage temperature is 15-25°C. Keep away from heat, sparks, open flames, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Color (APHA)	≤ 50
Specific Gravity (20°C)	0.93 - 0.97
Water Content (KF)	≤ 0.1%

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