Description

Dihexadecyl 3,3'-Thiobispropionate is a high-molecular-weight organosulfur compound widely recognized as an effective secondary antioxidant and metal deactivator. Its primary value lies in its ability to provide long-term thermal stability and prevent oxidative degradation in polymer systems. This product is essential for manufacturers in the plastics, rubber, and lubricant industries seeking to enhance the durability and lifespan of their materials under demanding conditions.

Application

• As a secondary antioxidant (peroxide decomposer) in polyolefins such as polyethylene (PE) and polypropylene (PP).
• To provide synergistic stabilization when combined with primary phenolic antioxidants in engineering plastics and elastomers.
• As a metal deactivator in wire and cable insulation compounds to mitigate catalytic degradation from metal ions.
• For thermal stabilization of lubricating oils, greases, and synthetic base fluids.
• In the formulation of adhesives and sealants to prevent embrittlement and maintain elasticity.
• As a stabilizing additive in food-contact compliant polymers and packaging materials (subject to regulatory approval).

Basic Information

Product Name	Dihexadecyl 3,3'-Thiobispropionate
CAS No.	3287-12-5
Molecular Formula	C38H76O4S
Molecular Weight	629.07 g/mol
Synonyms	Dilauryl Thiodipropionate; DLTP; DLTDP; Di-n-dodecyl 3,3'-thiodipropionate; Thiodipropionic Acid Didodecyl Ester; Antioxidant DLTP; CAS 123-28-4 (Note: Common synonym, verify specific isomer); Bis(3-dodecoxy-3-oxopropyl) Sulfide; 3,3'-Thiobispropanoic Acid Dihexadecyl Ester
EINECS	Contact for details

Quality Control

Our production of Dihexadecyl 3,3'-Thiobispropionate adheres to stringent quality management protocols. Each batch is tested against established internal specifications to ensure consistent purity, performance, and safety. A comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, melting point, and appearance is provided with every shipment to guarantee supply reliability and product traceability.

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 heat sources and incompatible materials. Under these conditions, the product is stable for extended periods.

Specification

Item	Specification
Appearance	White to off-white crystalline flakes or powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0 %
Melting Point	39 - 42 °C
Acid Value	≤ 1.0 mg KOH/g
Sulfur Content	5.0 - 5.2 %

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