Description

2,2''-Propylidene-Bis(4-Methyl-6-tert-Butylphenol) is a high-performance hindered phenolic antioxidant widely used to inhibit oxidative degradation in various organic materials. Its primary value lies in its ability to extend the service life and maintain the physical properties of polymers and other susceptible substrates by scavenging free radicals. This compound is essential for manufacturers in the plastics, rubber, and lubricant industries seeking to enhance product stability and durability under demanding conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), polystyrene, and engineering plastics to prevent thermal and oxidative degradation during processing and end-use.
• Rubber Industry: Protects synthetic rubbers (SBR, BR, NBR) and natural rubber from oxidation, preventing cracking and loss of elasticity.
• Lubricants & Fuels: Antioxidant additive in engine oils, greases, and industrial lubricants to reduce sludge formation and viscosity increase.
• Adhesives & Sealants: Enhances the shelf-life and performance stability of adhesive formulations by preventing resin oxidation.
• Elastomers & Thermoplastic Elastomers (TPEs): Provides long-term aging resistance in products like hoses, gaskets, and cable sheathing.
• Fatty Derivatives: Used as a stabilizer in fatty acids, oils, and other organic intermediates susceptible to autoxidation.

Basic Information

Product Name	2,2''-Propylidene-Bis(4-Methyl-6-tert-Butylphenol)
CAS No.	20195-51-1
Molecular Formula	C₂₅H₃₆O₂
Molecular Weight	368.55 g/mol
Synonyms	2,2'-Methylenebis(6-tert-butyl-4-methylphenol); Antioxidant 2246; Bis(4-methyl-6-tert-butylphenol)methane; 4,4'-Methylenebis(2-tert-butyl-5-methylphenol); Phenol, 2,2'-methylenebis[6-(1,1-dimethylethyl)-4-methyl-]; AO-2246; MBMBP; NSC 66484; Lowinox 22M46; Anox 22M46
EINECS	243-622-4

Quality Control

Our production of 2,2''-Propylidene-Bis(4-Methyl-6-tert-Butylphenol) adheres to stringent quality management systems to ensure batch-to-batch consistency and high purity. The material is manufactured and tested in compliance with relevant industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and physical specifications is provided with each shipment to guarantee it meets your specific application 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 product is easily oxidized and should be stored under an inert atmosphere (e.g., nitrogen) for long-term storage to maintain optimal 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	125 - 130 °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.