Description

2,2'-(2-Methylpropylidene)Bis[6-Cyclopentyl-4-Isopropylphenol] is a high-performance, sterically hindered phenolic antioxidant. This compound is engineered to provide exceptional stability and longevity to materials by effectively inhibiting oxidative degradation. It is a critical additive for manufacturers in the polymer and specialty chemical industries seeking to enhance the durability and performance of their products under demanding conditions.

Application

• Primary antioxidant for polyolefins (PP, PE) and other polymers to prevent thermal-oxidative degradation during processing and service life.
• Stabilizer for adhesives, sealants, and elastomers to maintain flexibility and prevent embrittlement.
• Additive in lubricants and greases to extend operational life by preventing oil oxidation and sludge formation.
• Stabilizing component in hot-melt adhesives and other thermoplastic formulations requiring high-temperature processing stability.
• Used in the production of synthetic fibers to protect against UV and thermal-induced degradation.
• Antioxidant for petroleum-derived products including fuels and waxes.
• Intermediate in the synthesis of more complex, high-molecular-weight polymer stabilizers.

Basic Information

Product Name	2,2'-(2-Methylpropylidene)Bis[6-Cyclopentyl-4-Isopropylphenol]
CAS No.	93803-60-2
Molecular Formula	C39H56O2
Molecular Weight	556.87 g/mol
Synonyms	Bis(6-cyclopentyl-4-isopropyl-2-methylphenol)methane; 2,2'-Methylenebis(6-cyclopentyl-4-isopropylphenol); 4,4'-Methylenebis(2-cyclopentyl-6-isopropylphenol); Phenol, 2,2'-methylenebis[6-cyclopentyl-4-(1-methylethyl)-; Antioxidant 93803-60-2; High molecular weight hindered phenol; Bis-phenol antioxidant; Polymer stabilizer 93803-60-2
EINECS	Contact for details

Quality Control

Our production of 2,2'-(2-Methylpropylidene)Bis[6-Cyclopentyl-4-Isopropylphenol] 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 available for each lot to support your quality assurance and regulatory needs.

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 structure
Assay (HPLC)	≥ 98.0%
Melting Point	115 - 125 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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