Description

2-(1,1-Dimethylethyl)-4-[[5-(1,1-Dimethylethyl)-4-Hydroxy-2-Methylphenyl]Thio]-5-Methylphenyl 3-(Dodecylthio)Propionate is a high-performance, multi-functional antioxidant and stabilizer designed for demanding polymer applications. Its molecular structure provides exceptional protection against thermal and oxidative degradation, extending the service life of finished products. This compound is essential for manufacturers in the plastics, rubber, and synthetic fiber industries seeking to enhance material durability and performance under harsh conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during processing and end-use.
• Lubricant & Fuel Additive: Used in formulating industrial lubricants, greases, and fuels to inhibit oxidation, reduce sludge formation, and extend fluid life.
• Adhesive & Sealant Formulations: Enhances the shelf-life and long-term stability of hot-melt and reactive adhesive systems by preventing resin degradation.
• Elastomer Production: Protects synthetic rubbers like SBR, EPDM, and NBR from scorching during compounding and from aging during service.
• Fiber & Textile Processing: Incorporated into synthetic fibers (e.g., polypropylene fibers) to maintain strength and color stability during high-temperature extrusion and processing.
• Masterbatch & Compound Manufacturing: A key ingredient in antioxidant and stabilizer concentrate masterbatches for efficient dispersion in final polymer matrices.

Basic Information

Product Name	2-(1,1-Dimethylethyl)-4-[[5-(1,1-Dimethylethyl)-4-Hydroxy-2-Methylphenyl]Thio]-5-Methylphenyl 3-(Dodecylthio)Propionate
CAS No.	69075-62-3
Molecular Formula	C37H58O3S2
Molecular Weight	614.98 g/mol
Synonyms	2,6-Di-tert-butyl-4-[(4-hydroxy-3,5-di-tert-butylphenyl)thio]phenyl 3-(dodecylthio)propionate; Antioxidant 300; Irganox 300; 4-Hydroxy-3,5-di-tert-butylphenyl 3-(dodecylthio)propionate sulfide; 2,6-Di-tert-butyl-4-(3,5-di-tert-butyl-4-hydroxyphenylthio)phenyl 3-(dodecylthio)propionate; Lowinox 300; AO-300; Phenolic thioester antioxidant
EINECS	Contact for details

Quality Control

Our production of 2-(1,1-Dimethylethyl)-4-[[5-(1,1-Dimethylethyl)-4-Hydroxy-2-Methylphenyl]Thio]-5-Methylphenyl 3-(Dodecylthio)Propionate adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure consistent performance and compliance with industry specifications. Certificates of Analysis (COA) detailing all critical parameters are provided with each shipment to guarantee traceability and quality assurance for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider maintaining under an inert atmosphere (e.g., nitrogen) to preserve efficacy. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	63 - 67 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %

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