Description

Diheptyl 3,3'- Thiodipropionate is a high-performance antioxidant and secondary stabilizer belonging to the thioester chemical class. This compound is valued for its ability to effectively interrupt the degradation cycle of polymers, thereby extending their service life and maintaining their physical properties. It is an essential additive for manufacturers in the plastics, rubber, and lubricant industries seeking to enhance the thermal stability and longevity of their products.

Application

• Primary or synergistic antioxidant in polyolefins such as polypropylene (PP) and polyethylene (PE).
• Stabilizer for synthetic rubbers and elastomers to prevent heat aging and cracking.
• Additive in lubricating oils and greases to inhibit oxidation and viscosity change.
• Stabilizing agent for adhesives and sealants to improve shelf-life and performance consistency.
• Used in the production of food-contact compliant polymers, subject to specific regulatory approvals.
• Component in cable insulation and jacketing compounds to protect against thermal degradation.

Basic Information

Product Name	Diheptyl 3,3'- Thiodipropionate
CAS No.	4275-38-1
Molecular Formula	C20H38O4S
Molecular Weight	374.58 g/mol
Synonyms	3,3'-Thiodipropionic Acid Diheptyl Ester; Di-n-heptyl 3,3'-thiodipropionate; Heptyl 3,3'-thiodipropionate; DHTDP; Antioxidant DHTDP; Thiodipropionic Acid Diheptyl Ester; Bis(heptyloxycarbonylethyl) Sulfide
EINECS	224-265-7

Quality Control

Our Diheptyl 3,3'- Thiodipropionate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, color, and acid value are available upon request to support your quality assurance protocols.

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 and heat sources.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Acid Value	≤ 1.0 mg KOH/g
Saponification Value	285 - 305 mg KOH/g
Color (APHA)	≤ 50
Refractive Index (20°C)	1.458 - 1.462
Density (20°C)	0.950 - 0.970 g/cm³

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