Description

Dipentyl 3,3'-Thiodipropionate is a high-purity organic compound widely recognized for its role as a versatile antioxidant and stabilizer. Its primary value lies in its ability to effectively inhibit oxidative degradation, thereby extending the service life and maintaining the performance integrity of various polymeric materials. This makes it an essential additive for manufacturers in the plastics, rubber, and lubricant industries seeking to enhance product durability and stability under demanding conditions.

Application

• Plastic Additive: Acts as a secondary antioxidant and thioester-type stabilizer in polyolefins (e.g., polypropylene, polyethylene) to prevent thermal and oxidative degradation during processing and long-term use.
• Rubber Industry: Used as a non-staining, non-discoloring antioxidant in synthetic rubbers and elastomers to protect against heat aging and maintain elasticity.
• Lubricant & Grease Stabilizer: Incorporated into synthetic lubricants and greases to prevent oxidation, reduce sludge formation, and extend oil life.
• Food Contact Materials: Employed as a stabilizer in polymers used for food packaging applications where regulatory compliance for indirect food contact is required.
• Adhesive & Sealant Formulations: Enhances the thermal stability and shelf-life of hot-melt adhesives and various sealants.
• Cosmetic & Personal Care: Serves as a stabilizer in polymer-based ingredients used in cosmetic formulations to prevent rancidity and maintain product quality.

Basic Information

Product Name	Dipentyl 3,3'-Thiodipropionate
CAS No.	4275-36-9
Molecular Formula	C16H30O4S
Molecular Weight	318.48 g/mol
Synonyms	Dipentyl Thiodipropionate; Di-n-pentyl 3,3'-Thiodipropionate; DPTDP; Thiodipropionic Acid Dipentyl Ester; Pentyl 3,3'-Thiodipropionate; Antioxidant DPTDP; Bis(3-carboxypentyl) Sulfide, Dipentyl Ester; 3,3'-Thiobis(propanoic acid) dipentyl ester
EINECS	224-273-5

Quality Control

Our Dipentyl 3,3'-Thiodipropionate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets precise specifications for industrial and specialty applications. A Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every shipment to guarantee traceability and consistent quality.

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). Keep away from strong oxidizing agents, heat sources, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC/HPLC)	≥ 98.0 %
Refractive Index (n20D)	1.460 - 1.470
Density (20°C)	0.970 - 0.990 g/cm³
Acid Value	≤ 1.0 mg KOH/g
Sulfur Content	9.8 - 10.2 %

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