Description

4,4'-Methylenebis[2,6-Dicyclopentylphenol] is a high-performance, sterically hindered phenolic antioxidant. This compound matters for its exceptional ability to inhibit oxidative degradation in demanding environments, thereby extending the service life and stability of sensitive materials. It is primarily needed by formulators and manufacturers in the polymer, lubricant, and specialty chemical industries seeking robust stabilization solutions.

Application

• Primary antioxidant for high-temperature processing and long-term thermal stabilization of polyolefins (PP, PE).
• Stabilizer component in synthetic lubricants and industrial greases to prevent oxidation and viscosity increase.
• Additive in elastomers and rubber compounds to protect against heat aging and maintain mechanical properties.
• Key intermediate in the synthesis of more complex, high-molecular-weight phenolic antioxidants.
• Stabilizing agent for adhesives, sealants, and other polymer-based formulations requiring color stability.
• Protective additive in transformer oils and other specialty hydrocarbon fluids.

Basic Information

Product Name	4,4'-Methylenebis[2,6-Dicyclopentylphenol]
CAS No.	66003-80-3
Molecular Formula	C39H52O2
Molecular Weight	552.83 g/mol
Synonyms	Bis(2,6-dicyclopentyl-4-hydroxyphenyl)methane; 2,2'-Methylenebis(6-cyclopentyl-4-cyclopentylphenol); Antioxidant 702; Phenolic antioxidant 702; 4,4'-Methylenebis(2,6-dicyclopentylphenol); Bis(3,5-dicyclopentyl-4-hydroxyphenyl)methane
EINECS	Contact for details

Quality Control

Our production of 4,4'-Methylenebis[2,6-Dicyclopentylphenol] adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with customer specifications. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its nature of being easily oxidized, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation, especially after opening the original container. 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	115 - 125 °C
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm

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