Description

2-(1,1-Dimethylethyl)-4-[[5-(1,1-Dimethylethyl)-4-Hydroxy-2-Methylphenyl]Thio]-5-Methylphenyl 3-(Tetradecylthio)Propionate is a high-performance phenolic antioxidant and thioester synergist, specifically engineered to provide exceptional long-term thermal stability to polymers. Its molecular structure is designed to effectively interrupt oxidation cycles, making it a critical additive for extending the service life and maintaining the physical properties of sensitive materials under demanding conditions. This compound is essential for formulators and manufacturers in the plastics, rubber, and synthetic lubricant industries who require robust stabilization against oxidative degradation.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during processing and end-use.
• Synergistic Blends: Used in combination with primary phosphite or phosphonite antioxidants to enhance overall stabilization performance and color retention.
• Lubricant & Grease Additive: Imparts oxidative stability to synthetic base oils and greases, preventing viscosity increase and sludge formation in high-temperature applications.
• Adhesive & Sealant Formulations: Protects the polymer matrix in hot-melt adhesives and elastomeric sealants from embrittlement and loss of adhesion.
• Wire & Cable Insulation: Provides long-term thermal aging protection for the polymeric insulation and jacketing materials.
• Food Contact Materials: Suitable for stabilization of polymers used in packaging applications, subject to relevant regulatory compliance and migration limits.

Basic Information

Product Name	2-(1,1-Dimethylethyl)-4-[[5-(1,1-Dimethylethyl)-4-Hydroxy-2-Methylphenyl]Thio]-5-Methylphenyl 3-(Tetradecylthio)Propionate
CAS No.	71982-41-7
Molecular Formula	C₄₀H₆₄O₃S₂
Molecular Weight	657.06 g/mol
Synonyms	2,6-Di-tert-butyl-4-[(4-hydroxy-3,5-dimethylphenyl)thio]phenyl 3-(tetradecylthio)propionate; Phenolic thioester antioxidant; Antioxidant 1790; Irganox 1790; 4-[[3,5-Bis(1,1-dimethylethyl)-4-hydroxyphenyl]thio]-2,6-bis(1,1-dimethylethyl)phenyl 3-(tetradecylthio)propanoate; 2,6-Di-tert-butyl-4-(3,5-di-tert-butyl-4-hydroxybenzylthio)phenyl 3-(tetradecylthio)propionate; AO-1790
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-(Tetradecylthio)Propionate adheres to stringent quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed against comprehensive specifications, including identity confirmation, purity assay, and critical impurity profiles. Certificates of Analysis (COA) documenting these results are provided with every shipment. Our quality systems are designed to support compliance with global regulatory frameworks, including REACH.

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 heat sources and incompatible materials. Due to its light-sensitive nature, the original container should be kept sealed until use to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	95 - 105 °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.