Description

2-Mercaptoacetic Acid sec-Butyl Ester is a specialized organosulfur compound widely used as a key intermediate and chain transfer agent in polymer synthesis. Its value lies in its ability to efficiently modify polymer molecular weight and architecture, enabling precise control over material properties. This chemical is essential for manufacturers in the polymer, rubber, and specialty chemical industries seeking to develop products with tailored performance characteristics.

Application

• Polymerization Modifier: Acts as an effective chain transfer agent (CTA) in free-radical polymerization processes to control molecular weight and polydispersity.
• Rubber & Elastomer Production: Used in the synthesis and modification of synthetic rubbers, influencing cross-linking density and final elastomer properties.
• Specialty Monomer Synthesis: Serves as a crucial intermediate for the production of other functional monomers containing thiol or ester groups.
• Adhesive & Sealant Formulations: Imparts specific rheological and curing characteristics in high-performance adhesive and sealant systems.
• Lubricant & Fuel Additive Precursor: Utilized in the manufacture of extreme pressure (EP) additives and other performance-enhancing compounds for lubricants.
• Pharmaceutical & Agrochemical Intermediates: Employed in the synthesis of active ingredients and fine chemicals where the thioester functionality is required.

Basic Information

Product Name	2-Mercaptoacetic Acid sec-Butyl Ester
CAS No.	16849-96-0
Molecular Formula	C6H12O2S
Molecular Weight	148.22 g/mol
Synonyms	sec-Butyl Thioglycolate; 2-Butyl Thioglycolate; Thioglycolic Acid sec-Butyl Ester; sec-Butyl Mercaptoacetate; 2-Mercaptoacetic Acid 1-Methylpropyl Ester; Butan-2-yl 2-sulfanylacetate (IUPAC); 2-Butoxy-2-thioacetic Acid; sec-BuTGA
EINECS	240-876-5

Quality Control

Our 2-Mercaptoacetic Acid sec-Butyl Ester is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including GC, HPLC, and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials such as strong oxidizing agents, bases, and acids. Recommended storage temperature is 2-25°C. Keep container tightly sealed when not in use to minimize moisture absorption and prevent volatilization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.460 - 1.470
Density (20°C)	1.00 - 1.05 g/mL

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