Description

Bis(2-Methylpropyl) 3,3'-Thiobispropionate is a high-performance sulfur-containing antioxidant and stabilizer widely used in polymer manufacturing. Its primary function is to protect materials from thermal and oxidative degradation, thereby extending product lifespan and maintaining performance integrity. This compound is essential for manufacturers in the plastics, rubber, and synthetic fiber industries who require reliable stabilization for sensitive polymers.

Application

• Polymer Stabilization: Acts as a secondary antioxidant and thioester synergist in polyolefins (PP, PE), polyurethanes, and ABS resins to prevent thermal degradation during processing and long-term use.
• Rubber Industry: Used as a non-discoloring stabilizer in synthetic rubbers and elastomers to protect against heat aging and maintain elasticity.
• Synthetic Fibers: Incorporated into nylon and polyester fibers to enhance thermal stability during high-temperature spinning and processing.
• Adhesives & Sealants: Improves the heat resistance and longevity of hot-melt adhesives and industrial sealants.
• Lubricant & Fuel Additive: Functions as an antioxidant in synthetic lubricants and industrial oils to reduce sludge formation and oxidative breakdown.
• Food Contact Materials: Suitable for use in polymer applications where regulatory compliance for indirect food contact is required, subject to specific grade and local regulations.

Basic Information

Product Name	Bis(2-Methylpropyl) 3,3'-Thiobispropionate
CAS No.	22695-02-9
Molecular Formula	C14H26O4S
Molecular Weight	290.42 g/mol
Synonyms	Dilauryl Thiodipropionate; DLTDP; Diisodecyl 3,3'-Thiodipropionate; Bis(isobutyl) 3,3'-Thiodipropionate; 3,3'-Thiobispropionic Acid Diisobutyl Ester; Antioxidant DLTDP; Thiodipropionic Acid Diisobutyl Ester; CAS 22695-02-9
EINECS	245-208-7

Quality Control

Our Bis(2-Methylpropyl) 3,3'-Thiobispropionate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	39 - 42 °C
Acid Value	≤ 1.0 mg KOH/g
Color (APHA)	≤ 50
Heavy Metals (as Pb)	≤ 10 ppm

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