Description

Di-2-Ethylhexyl 3,3'-Thiodipropionate is a high-performance organosulfur compound widely recognized as an effective secondary antioxidant and stabilizer. Its primary value lies in its ability to decompose hydroperoxides, thereby preventing the oxidative degradation of polymers and other sensitive materials. This product is essential for manufacturers in the plastics, lubricant, and synthetic rubber industries seeking to enhance the longevity and thermal stability of their formulations.

Application

• Primary use as a secondary antioxidant (peroxide decomposer) in polyolefins such as polypropylene (PP) and polyethylene (PE).
• Critical stabilizer component in synthetic lubricants and greases to prevent oxidation and viscosity breakdown.
• Enhances the thermal aging resistance of styrenic polymers, including ABS and polystyrene.
• Used as a stabilizer in adhesives, sealants, and elastomers to maintain performance properties.
• Functions as a synergistic co-stabilizer when combined with primary phenolic antioxidants for superior protection.
• Applied in the stabilization of polyvinyl chloride (PVC) and other halogen-containing polymers.
• Utilized in the production of food-contact compliant polymers, subject to specific regulatory approvals.
• Employed in petroleum-derived products to inhibit gum formation and oxidation.

Basic Information

Product Name	Di-2-Ethylhexyl 3,3'-Thiodipropionate
CAS No.	10526-15-5
Molecular Formula	C22H42O4S
Molecular Weight	402.63 g/mol
Synonyms	Dioctyl Thiodipropionate; DOTE; DTOP; Di(2-ethylhexyl) 3,3'-Thiodipropionate; Bis(2-ethylhexyl) 3,3'-Thiodipropionate; Antioxidant DSTDP; Thiodipropionic Acid Di(2-ethylhexyl) Ester; IONOX DLTP; Evanstab® 18
EINECS	234-093-1

Quality Control

Our production of Di-2-Ethylhexyl 3,3'-Thiodipropionate adheres to stringent quality management systems. Every batch undergoes comprehensive analytical testing, including assay, identification, and impurity profiling, to ensure it meets precise specifications. A Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with each shipment. We support compliance with relevant global regulatory frameworks, including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from strong acids and organic solvents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to minimize exposure to air and moisture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Acidity (as Thiodipropionic Acid)	≤ 0.05 %
Water Content (KF)	≤ 0.1 %
Refractive Index (20°C)	1.457 - 1.461
Specific Gravity (20/20°C)	0.960 - 0.980

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