Description

2,2'-Isopropylidenebis[4-(3,5,5-Trimethylhexyl)Phenol] is a high-purity, hindered phenolic compound primarily valued for its role as an antioxidant and stabilizer in polymer systems. Its chemical structure provides excellent protection against thermal and oxidative degradation, extending the service life of sensitive materials. This product is essential for manufacturers in the plastics, rubber, and specialty chemical industries seeking to enhance the durability and performance of their formulations.

Application

• Polymer Stabilizer: Acts as a highly effective antioxidant in polyolefins (e.g., PP, PE), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during processing and end-use.
• Lubricant & Fuel Additive: Used as an antioxidant additive in industrial lubricants, greases, and fuels to inhibit sludge formation and viscosity increase, improving operational stability.
• Adhesive & Sealant Formulations: Incorporated to prevent premature curing and maintain the integrity and adhesive properties of polyurethane and other polymer-based adhesives.
• Elastomer Production: Protects synthetic elastomers like SBR and NBR from chain scission and cross-linking caused by heat and oxygen exposure.
• Coating Resins: Enhances the weatherability and color stability of alkyd and acrylic coating systems by scavenging free radicals.
• Intermediate for Specialty Chemicals: Serves as a key building block in the synthesis of more complex phenolic antioxidants and light stabilizers.

Basic Information

Product Name	2,2'-Isopropylidenebis[4-(3,5,5-Trimethylhexyl)Phenol]
CAS No.	85371-53-5
Molecular Formula	C38H60O2
Molecular Weight	548.9 g/mol
Synonyms	Phenol, 2,2'-isopropylidenebis[4-(3,5,5-trimethylhexyl)]-; Bis[4-(3,5,5-trimethylhexyl)phenyl]methane derivative; Antioxidant 565; Irganox 565 (trade name); 4,4'-Isopropylidenedi(2,6-di(3,5,5-trimethylhexyl)phenol); Phenolic antioxidant 565; Low volatility phenolic antioxidant; Bis-phenol derivative antioxidant.
EINECS	Contact for details

Quality Control

Our 2,2'-Isopropylidenebis[4-(3,5,5-Trimethylhexyl)Phenol] is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications and consistent performance for your applications. Certificates of Analysis (COA) documenting all critical quality parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	48 - 52 °C
Loss on Drying	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm

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