Description

6,6'-(2-Methylpropylidene)Bis[4-Cyclopentyl-m-Cresol] is a high-performance sterically hindered phenolic antioxidant. This compound is 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 specialty 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: Used in the production of tires, hoses, belts, and seals to protect against heat aging and maintain elasticity.
• Lubricants & Greases: Antioxidant additive in synthetic and mineral-based lubricating oils and greases to extend service life and reduce sludge formation.
• Adhesives & Sealants: Enhances the shelf-life and durability of hot-melt and pressure-sensitive adhesives by preventing resin oxidation.
• Fuel & Petrochemical Additives: Acts as a stabilizer in fuels and hydrocarbon streams to inhibit gum and sediment formation.
• Coating Resins: Protects alkyd and other oxidatively-curing coating resins during storage and improves film stability.

Basic Information

Product Name	6,6'-(2-Methylpropylidene)Bis[4-Cyclopentyl-m-Cresol]
CAS No.	93892-45-6
Molecular Formula	C33H48O2
Molecular Weight	476.74 g/mol
Synonyms	4,4'-Butylidenebis(6-cyclopentyl-3-methylphenol); Bis(4-cyclopentyl-3-methyl-6-tert-butylphenyl)methane (related structure); 6,6'-Butylidenebis(4-cyclopentyl-m-cresol); Antioxidant 93892-45-6; Phenolic antioxidant 93892-45-6; Hindered phenol antioxidant; 2,2'-Methylenebis(6-cyclopentyl-4-methylphenol) derivative; Bis-phenol antioxidant with cyclopentyl substituents
EINECS	Contact for details

Quality Control

Our production of 6,6'-(2-Methylpropylidene)Bis[4-Cyclopentyl-m-Cresol] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay, identification, and impurity profiling, to ensure high purity and consistent performance. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment 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 area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) 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	115°C - 125°C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%

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