Description

2,2'-(1,4-Phenylenediisopropylidene)Bis[4,6-Xylenol] is a high-purity phenolic compound, also known as a hindered phenol antioxidant, valued for its excellent performance as a stabilizer in polymer systems. Its primary function is to inhibit oxidative degradation, thereby extending the service life and maintaining the physical properties of sensitive materials. This product is essential for manufacturers in the plastics, rubber, and specialty chemical industries seeking reliable additive solutions.

Application

• Polymer Stabilizer: Acts as a highly effective primary antioxidant in polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and end-use.
• Additive for Adhesives and Sealants: Enhances the shelf-life and long-term stability of adhesive formulations by protecting against oxidative cross-linking or embrittlement.
• Lubricant and Grease Additive: Used in synthetic lubricants and industrial greases to prevent oxidation and viscosity increase, ensuring consistent performance under high-temperature conditions.
• Intermediate for Specialty Chemicals: Serves as a key building block in the synthesis of more complex hindered phenol antioxidants and other performance chemicals.
• Elastomer Protection: Protects synthetic elastomers like SBR, NBR, and EPDM from ozone and oxygen-induced cracking and loss of elasticity.
• Fuel and Oil Stabilizer: Employed as an antioxidant additive in fuels and transformer oils to inhibit sludge formation and acid generation.

Basic Information

Product Name	2,2'-(1,4-Phenylenediisopropylidene)Bis[4,6-Xylenol]
CAS No.	34074-95-8
Molecular Formula	C32H42O2
Molecular Weight	458.68 g/mol
Synonyms	2,2'-Methylenebis(6-tert-butyl-4-methylphenol) analog; 4,4'-Isopropylidenebis(2,6-dimethylphenol); Antioxidant 2246-S; Phenol, 4,4'-(1,4-phenylenediisopropylidene)bis[2,6-dimethyl-; Bis(4-hydroxy-3,5-dimethylbenzyl)benzene; 1,4-Bis(3,5-dimethyl-4-hydroxybenzyl)benzene; 2,6-Dimethyl-4-[4-(3,5-dimethyl-4-hydroxybenzyl)benzyl]phenol
EINECS	Contact for details

Quality Control

Our production of 2,2'-(1,4-Phenylenediisopropylidene)Bis[4,6-Xylenol] adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee compliance with your technical requirements.

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. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	155°C - 165°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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