Description

Bis(2-Ethylhexyl) 3,3'-[Methylenebis(Thio)]Bispropionate is a specialized organosulfur compound primarily used as a high-performance stabilizer and antioxidant. This chemical matters for its ability to effectively scavenge free radicals and inhibit degradation processes in sensitive formulations, thereby extending product shelf life and maintaining performance integrity. It is critically needed by manufacturers in the polymer, lubricant, and specialty chemical industries where long-term stability under demanding conditions is a key requirement.

Application

• Primary antioxidant and stabilizer in polyolefins (e.g., polyethylene, polypropylene) and other polymers.
• Additive in synthetic lubricants and greases to prevent oxidative degradation and viscosity change.
• Stabilizing agent in adhesives, sealants, and elastomers to enhance weatherability and thermal stability.
• Component in fuel and oil additives to improve oxidation resistance and prevent sludge formation.
• Intermediate in the synthesis of more complex sulfur-containing specialty chemicals.
• Stabilizer for technical and industrial grades of oils and fats.

Basic Information

Product Name	Bis(2-Ethylhexyl) 3,3'-[Methylenebis(Thio)]Bispropionate
CAS No.	93803-44-2
Molecular Formula	C27H52O4S2
Molecular Weight	504.82 g/mol
Synonyms	3,3'-Thiodipropionic Acid, Bis(2-ethylhexyl) Ester; Dioctyl Thiodipropionate; DOTE; Antioxidant DOTE; Thiodipropionic Acid Dioctyl Ester; Bis(2-ethylhexyl) 3,3'-Thiodipropionate; Lankromark DOTE; CAS 93803-44-2
EINECS	Contact for details

Quality Control

Our production of Bis(2-Ethylhexyl) 3,3'-[Methylenebis(Thio)]Bispropionate adheres to stringent quality management protocols. Every 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 specific impurities are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. For long-term storage, consider using an inert atmosphere to minimize oxidative degradation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Color (APHA)	≤ 50
Refractive Index (20°C)	1.460 - 1.470
Density (20°C)	0.950 - 0.970 g/mL
Acid Value	≤ 0.5 mg KOH/g
Water Content (KF)	≤ 0.1%

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