Description

2,6-Bis(1,1-Dimethylethyl)-4-[(4-Hydroxy-3,5-Dimethylphenyl)Methyl]Phenol is a high-performance phenolic antioxidant and key chemical intermediate. This compound is valued for its ability to inhibit oxidative degradation, thereby extending the service life and stability of sensitive materials. It is primarily sought by manufacturers in the polymer, rubber, and specialty chemical industries for its robust protective properties.

Application

• Polymer Stabilizer: Acts as a primary antioxidant in polyolefins (e.g., polyethylene, polypropylene), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and end-use.
• Rubber Additive: Used in the formulation of tires, seals, and industrial rubber goods to protect against aging and maintain elasticity and mechanical properties.
• Fuel & Lubricant Antioxidant: Incorporated into engine oils, greases, and industrial lubricants to prevent sludge formation and viscosity increase caused by oxidation.
• Adhesive & Sealant Formulations: Enhances the shelf-life and performance stability of reactive adhesives, sealants, and coatings by scavenging free radicals.
• Chemical Intermediate: Serves as a key building block in the synthesis of more complex, high-molecular-weight hindered phenol antioxidants and other specialty chemicals.
• Elastomer Protection: Provides critical stabilization for synthetic elastomers like SBR (Styrene-Butadiene Rubber) and NBR (Nitrile Rubber) used in automotive and industrial applications.

Basic Information

Product Name	2,6-Bis(1,1-Dimethylethyl)-4-[(4-Hydroxy-3,5-Dimethylphenyl)Methyl]Phenol
CAS No.	20690-84-0
Molecular Formula	C23H32O2
Molecular Weight	340.50 g/mol
Synonyms	2,6-Di-tert-butyl-4-[(4-hydroxy-3,5-dimethylphenyl)methyl]phenol; Antioxidant 300; 4-[(4-Hydroxy-3,5-dimethylphenyl)methyl]-2,6-di-tert-butylphenol; 2,6-Di-tert-butyl-4-(4-hydroxy-3,5-dimethylbenzyl)phenol; 4-(4-Hydroxy-3,5-dimethylbenzyl)-2,6-di-tert-butylphenol; Bis(1,1-dimethylethyl)-4-[(4-hydroxy-3,5-dimethylphenyl)methyl]phenol; Lowinox 44B25 (trade name); Irganox 1520 (related trade name series)
EINECS	243-968-1

Quality Control

Our production of 2,6-Bis(1,1-Dimethylethyl)-4-[(4-Hydroxy-3,5-Dimethylphenyl)Methyl]Phenol adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance protocols.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	155 - 160 °C
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.1 %

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