Description

2,6-Bis(1,1-Dimethylethyl)-4-[[(4-Methoxyphenyl)Dimethylsilyl]Methoxy]Phenol is a specialized organosilicon-substituted hindered phenol antioxidant. This compound matters for its dual functionality, combining the radical-scavenging power of a phenolic antioxidant with the protective and modifying properties of a silyl ether group. It is primarily needed by formulators in the polymer, lubricant, and specialty chemical industries seeking advanced stabilization solutions for high-performance materials.

Application

• Primary antioxidant and stabilizer in polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and service life.
• Performance additive in synthetic lubricants, greases, and hydraulic fluids to enhance oxidative stability and extend fluid life under high-temperature operating conditions.
• Key intermediate in the synthesis of more complex functionalized antioxidants and polymer additives with tailored properties.
• Stabilizing agent in adhesives, sealants, and coatings to prevent gelation and maintain viscosity stability.
• Potential use as a protective group or reagent in specialty organic synthesis and pharmaceutical intermediate manufacturing.

Basic Information

Product Name	2,6-Bis(1,1-Dimethylethyl)-4-[[(4-Methoxyphenyl)Dimethylsilyl]Methoxy]Phenol
CAS No.	180908-67-2
Molecular Formula	C24H36O3Si
Molecular Weight	400.63 g/mol
Synonyms	4-[(4-Methoxyphenyl)dimethylsilyl]oxy-2,6-di-tert-butylphenol; 2,6-Di-tert-butyl-4-[(4-methoxyphenyl)dimethylsilyl]oxyphenol; Phenol, 2,6-bis(1,1-dimethylethyl)-4-[[(4-methoxyphenyl)dimethylsilyl]methoxy]-; Antioxidant S-1790 (potential trade name); Hindered phenol silyl ether; (4-Methoxyphenyl)dimethyl(3,5-di-tert-butyl-4-hydroxyphenoxy)silane
EINECS	Contact for details

Quality Control

Our production of 2,6-Bis(1,1-Dimethylethyl)-4-[[(4-Methoxyphenyl)Dimethylsilyl]Methoxy]Phenol adheres to strict quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance. Comprehensive Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are provided to guarantee traceability and compliance with your technical requirements.

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 or argon) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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