Description

2,2'-(2-Methylpropylidene)Bis[5-Cyclopentyl-p-Cresol] is a high-performance sterically hindered phenolic antioxidant. This compound is specifically engineered to provide exceptional oxidative stability to polymers and other organic materials by effectively scavenging free radicals. It is a critical additive for manufacturers in the polymer, rubber, and lubricant industries seeking to enhance product longevity and performance under demanding thermal and oxidative conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and end-use.
• Rubber Industry: Protects synthetic and natural rubber compounds in tires, seals, and industrial rubber goods from aging and cracking.
• Lubricant & Grease Additive: Extends the service life of industrial lubricants, transmission fluids, and greases by inhibiting oil oxidation and sludge formation.
• Adhesive & Sealant Formulations: Improves the shelf-life and durability of hot-melt adhesives, pressure-sensitive adhesives, and construction sealants.
• Elastomer Production: Essential for stabilizing styrene-butadiene rubber (SBR), polybutadiene rubber (BR), and other elastomers against heat and oxygen exposure.
• Fuel & Petrochemical Additive: Used as a stabilizer in fuels and certain petrochemical intermediates to prevent gum formation and degradation.

Basic Information

Product Name	2,2'-(2-Methylpropylidene)Bis[5-Cyclopentyl-p-Cresol]
CAS No.	93892-43-4
Molecular Formula	C33H48O2
Molecular Weight	476.74 g/mol
Synonyms	Bis(5-cyclopentyl-2-methyl-4-hydroxyphenyl)methane; 4,4'-Methylenebis(2-cyclopentyl-6-methylphenol); Antioxidant 93892-43-4; Phenolic antioxidant (cyclopentyl substituted); 2,2'-Methylenebis(6-cyclopentyl-4-methylphenol); Low-color phenolic antioxidant; CAS 93892-43-4
EINECS	Contact for details

Quality Control

Our production of 2,2'-(2-Methylpropylidene)Bis[5-Cyclopentyl-p-Cresol] adheres to stringent quality management systems. Every batch is subjected to comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent performance. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

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 product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) in the container headspace 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 reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	115 - 125 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm

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