Description

Dibutyl Mercaptosuccinate is a specialized organosulfur compound widely utilized as a versatile intermediate and additive. Its unique chemical structure, featuring both ester and thiol functionalities, makes it a valuable component in the synthesis of advanced materials and performance chemicals. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product properties or develop novel formulations. Dibutyl Mercaptosuccinate CAS NO 7529-08-0 is recognized for its role as a chain transfer agent, stabilizer, and precursor in various chemical processes.

Application

• Polymer Industry: Acts as an effective chain transfer agent (CTA) in free-radical polymerization processes to control molecular weight and polymer architecture.
• Lubricant & Fuel Additives: Serves as an antioxidant and anti-wear additive, helping to improve the oxidative stability and performance longevity of industrial lubricants and fuels.
• Chemical Synthesis: A key intermediate in the production of other mercapto-compounds, pharmaceuticals, and agrochemicals due to its reactive thiol group.
• Rubber & Elastomer Processing: Functions as a peptizing agent or plasticizer to modify the viscosity and processing characteristics of synthetic rubbers.
• Adhesive & Sealant Formulations: Used as a cross-linking agent or modifier to enhance adhesion, flexibility, and curing properties.
• Stabilizer for Plastics: Imparts heat and light stability to PVC and other halogenated polymers, preventing degradation during processing and use.

Basic Information

Product Name	Dibutyl Mercaptosuccinate
CAS No.	7529-08-0
Molecular Formula	C12H22O4S
Molecular Weight	262.37 g/mol
Synonyms	Dibutyl Thiomalate; Butyl 2-(Butoxycarbonyl)ethanethioate; Dibutyl 2-Mercaptosuccinate; Succinic Acid, Mercapto-, Dibutyl Ester; Thiomalic Acid Dibutyl Ester; DBMS; Mercaptosuccinic Acid Dibutyl Ester
EINECS	231-393-6

Quality Control

Our Dibutyl Mercaptosuccinate is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling. Certificates of Analysis (COA) documenting all critical quality attributes are provided with every shipment. We adhere to relevant industrial standards and can support customer-specific qualification requirements.

Storage

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

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Refractive Index (n20D)	1.460 - 1.470
Density (20°C)	1.05 - 1.10 g/mL
Water Content (KF)	≤ 0.5%

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