Description

Dipropyl 3,3’-Thiodipropionate is a sulfur-containing diester compound widely recognized for its role as an antioxidant and stabilizer in various industrial formulations. Its primary value lies in its ability to inhibit oxidative degradation, thereby extending the shelf life and maintaining the performance integrity of sensitive materials. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking reliable additive solutions.

Application

• Primary antioxidant and stabilizer in polyolefins and other polymers to prevent thermal and oxidative degradation during processing and service life.
• Additive in lubricating oils and greases to enhance oxidative stability and prevent sludge formation.
• Stabilizing agent for synthetic fibers and elastomers to retain mechanical properties.
• Intermediate in the synthesis of other specialty chemicals, including plasticizers and further functional additives.
• Component in adhesive and sealant formulations to improve long-term aging characteristics.
• Used in research and development for studying antioxidant mechanisms and developing new stabilization systems.

Basic Information

Product Name	Dipropyl 3,3’-Thiodipropionate
CAS No.	4275-35-8
Molecular Formula	C12H22O4S
Molecular Weight	262.37 g/mol
Synonyms	3,3'-Thiodipropionic Acid Dipropyl Ester; Dipropyl 3,3'-Thiodipropionate; Propyl 3,3'-Thiodipropionate; DTPP; Antioxidant DTPP; Thiodipropionic Acid Dipropyl Ester; Bis(3-carboxypropyl) Sulfide Dipropyl Ester; Di-n-propyl 3,3'-thiodipropanoate
EINECS	224-273-3

Quality Control

Our Dipropyl 3,3’-Thiodipropionate is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance 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). This material is easily oxidized; for long-term storage, consider maintaining under an inert atmosphere such as nitrogen. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Refractive Index (20°C)	1.460 - 1.470
Density (20°C)	1.05 - 1.10 g/cm³
Water Content (KF)	≤ 0.5 %
Acid Value	≤ 1.0 mg KOH/g

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