Description

(Z,Z)-Dioctadec-9-Enyl 3,3'-Thiobispropionate is a high-purity, synthetic antioxidant belonging to the class of thio-based stabilizers. This compound is valued for its exceptional ability to inhibit oxidative degradation and extend the functional lifespan of sensitive materials. It is primarily utilized by manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product stability and performance under demanding conditions.

Application

• Polymer Stabilizer: A key antioxidant and secondary stabilizer in polyolefins (e.g., polyethylene, polypropylene) to prevent thermal and oxidative degradation during processing and end-use.
• Lubricant & Grease Additive: Used in synthetic and mineral-based lubricating oils and greases to inhibit oxidation, reduce sludge formation, and extend service life.
• Adhesive & Sealant Formulations: Enhances the shelf-life and thermal stability of hot-melt adhesives, sealants, and other polymer-based bonding agents.
• Elastomer Protection: Protects synthetic rubbers and elastomers from premature aging caused by heat and oxygen exposure.
• Fat & Oil Stabilization: Acts as an antioxidant in technical-grade fats, oils, and waxes to prevent rancidity and maintain quality.
• Cosmetic & Personal Care Ingredients: Employed as a stabilizer in formulations containing unsaturated oils to prevent oxidation and spoilage.

Basic Information

Product Name	(Z,Z)-Dioctadec-9-Enyl 3,3'-Thiobispropionate
CAS No.	17043-10-6
Molecular Formula	C42H80O4S
Molecular Weight	681.2 g/mol
Synonyms	Distearyl 3,3'-Thiodipropionate; Distearyl Thiodipropionate; DSTDP; 3,3'-Thiobispropionic Acid Dioctadecyl Ester; Dioctadecyl 3,3'-Thiodipropionate; Antioxidant DSTDP; Thiodipropionic Acid Distearyl Ester; Lankromark® DSTDP
EINECS	241-121-3

Quality Control

Our (Z,Z)-Dioctadec-9-Enyl 3,3'-Thiobispropionate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including assay, melting point, and impurity profile analysis, to ensure it meets stringent specifications for industrial and specialty applications. A Certificate of Analysis (COA) documenting purity and key physical parameters is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white flake or powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	63.0 - 68.0 °C
Acid Value	≤ 1.0 mg KOH/g
Heavy Metals (as Pb)	≤ 10 ppm
Loss on Drying	≤ 0.5 %

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