Description

Thiopropionic Acid S-Undecyl Ester is a specialized organosulfur compound with a unique combination of a thioester linkage and a long alkyl chain. This structure is critical for its function as a highly effective stabilizer and antioxidant in polymer systems, protecting materials from oxidative degradation. It is an essential additive for manufacturers in the plastics, rubber, and lubricant industries seeking to enhance the longevity and performance of their products under demanding conditions.

Application

• Primary antioxidant and stabilizer for polyolefins, including polyethylene (PE) and polypropylene (PP).
• Thermal stabilizer for synthetic rubbers and elastomers to prevent chain scission and cross-linking.
• Additive in lubricating oils and greases to inhibit oxidation and extend service life.
• Stabilizing agent for adhesives and sealants to maintain performance and prevent gelation.
• Intermediate in the synthesis of more complex specialty chemicals and surfactants.
• Component in coatings and films where long-term resistance to heat and light is required.

Basic Information

Product Name	Thiopropionic Acid S-Undecyl Ester
CAS No.	2432-46-4
Molecular Formula	C₁₄H₂₈O₂S
Molecular Weight	260.44 g/mol
Synonyms	Undecyl 3-mercaptopropionate; S-Undecyl 3-mercaptopropionate; 3-Mercaptopropionic acid S-undecyl ester; Undecyl 3-sulfanylpropanoate; Thiopropionic acid undecyl ester; Antioxidant 1076 derivative (thioester); DLTDP analogue (C11); Propanoic acid, 3-mercapto-, S-undecyl ester
EINECS	219-403-8

Quality Control

Our production of Thiopropionic Acid S-Undecyl Ester adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Every lot is analyzed using advanced chromatographic and spectroscopic techniques to verify identity, potency, and the absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Refractive Index (n20D)	1.460 - 1.470
Density (20°C)	0.92 - 0.96 g/mL
Sulfur Content	11.5 - 12.5 %

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