Description

2-Mercaptoethyl Stearate is a sulfur-containing fatty acid ester, specifically the stearic acid ester of 2-mercaptoethanol. This compound is valued for its dual functionality, combining the long hydrocarbon chain of stearate with a reactive thiol (-SH) group, making it a versatile intermediate and additive. It is primarily utilized in the polymer, lubricant, and specialty chemical industries where its properties as a stabilizer, chain transfer agent, or surface modifier are required. The product is supplied under the identifier CAS NO 27564-01-8.

Application

• As a chain transfer agent (CTA) or modifier in free-radical polymerization processes to control molecular weight.
• As a stabilizer or antioxidant precursor in plastics and synthetic rubbers to enhance thermal and oxidative stability.
• As a surface-active agent or lubricant additive to impart specific frictional or anti-wear properties.
• As a key chemical intermediate for the synthesis of more complex thioether or disulfide compounds.
• In the formulation of specialty coatings and adhesives where thiol-ene click chemistry is employed.
• Potential use as a crosslinking agent or co-agent in certain elastomer and resin systems.

Basic Information

Product Name	2-Mercaptoethyl Stearate
CAS No.	27564-01-8
Molecular Formula	C₂₀H₄₀O₂S
Molecular Weight	344.60 g/mol
Synonyms	Stearic acid 2-mercaptoethyl ester; 2-Mercaptoethyl octadecanoate; Octadecanoic acid, 2-mercaptoethyl ester; Thioglycolic acid stearyl ester; Mercaptoethyl stearate; β-Mercaptoethyl stearate; NSC 3341
EINECS	248-531-6

Quality Control

Our 2-Mercaptoethyl Stearate is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) documenting key parameters such as assay, appearance, and specific impurities is available for every shipment. We are committed to meeting the specifications required for your industrial applications.

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 material is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	White to off-white waxy solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Melting Point	Contact for details
Heavy Metals	< 10 ppm
Loss on Drying	< 0.5%

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