Description

2,6-Bis(Bicyclo[2.2.1]Hept-2-Yl)-4-(1,1-Dimethylethyl)Phenol is a sterically hindered phenolic compound, valued for its role as a high-performance antioxidant and stabilizer in demanding polymer systems. Its unique molecular structure, featuring bulky bicyclic substituents, provides exceptional resistance to thermal and oxidative degradation. This makes it a critical additive for manufacturers in the polymer, specialty chemical, and lubricant industries seeking to enhance the longevity and performance of their products under extreme conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (e.g., polyethylene, polypropylene), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during processing and service life.
• Lubricant & Fuel Additive: Antioxidant component in high-temperature engine oils, industrial lubricants, greases, and fuels to inhibit sludge formation and viscosity increase.
• Adhesive & Sealant Formulations: Enhances the thermal stability and prevents premature aging of hot-melt adhesives, epoxy resins, and polyurethane-based sealants.
• Specialty Chemical Intermediate: Used in the synthesis of more complex hindered phenol antioxidants and other performance chemicals.
• Elastomer Protection: Protects synthetic elastomers like SBR, NBR, and EPDM from oxidative chain scission and cross-linking, maintaining elasticity.
• Coating Additive: Incorporated into protective coatings and wire enamels to improve their resistance to heat and environmental weathering.

Basic Information

Product Name	2,6-Bis(Bicyclo[2.2.1]Hept-2-Yl)-4-(1,1-Dimethylethyl)Phenol
CAS No.	55256-05-8
Molecular Formula	C23H32O
Molecular Weight	324.50 g/mol
Synonyms	2,6-Dinorbornyl-4-tert-butylphenol; 4-tert-Butyl-2,6-dinorbornylphenol; Phenol, 2,6-bis(bicyclo[2.2.1]hept-2-yl)-4-(1,1-dimethylethyl)-; AO 44B5; Antioxidant 44B5; Dinorbornyl cresol derivative; Norbornyl-substituted phenol; Sterically hindered phenolic antioxidant
EINECS	Contact for details

Quality Control

Our production of 2,6-Bis(Bicyclo[2.2.1]Hept-2-Yl)-4-(1,1-Dimethylethyl)Phenol adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in high-performance applications. Certificates of Analysis (COA) documenting all critical 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). Keep away from strong oxidizing agents, heat, and ignition sources. For long-term storage, consider an inert atmosphere to maintain optimal efficacy.

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%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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