Description

4,4'-Di(A-Methylbenzyl)Diphenylamine is a high-performance, sterically hindered amine antioxidant. This compound is valued for its excellent thermal and oxidative stability, effectively inhibiting degradation processes in various polymeric systems. It is primarily utilized by manufacturers in the polymer, rubber, and lubricant industries to extend product lifespan and maintain material integrity under demanding conditions.

Application

• Primary antioxidant in the production of synthetic rubbers (e.g., SBR, BR, NBR) and thermoplastic elastomers.
• Stabilizer for polyolefins (PP, PE) and engineering plastics to prevent thermal-oxidative degradation during processing and end-use.
• Additive in lubricating oils and greases to enhance oxidation resistance and extend service life.
• Key component in adhesive and sealant formulations to improve long-term aging performance.
• Used in the stabilization of hydrocarbon-based fuels and other petrochemical products.
• Protective agent for cable and wire insulation materials.

Basic Information

Product Name	4,4'-Di(A-Methylbenzyl)Diphenylamine
CAS No.	75422-59-2
Molecular Formula	C30H31N
Molecular Weight	405.58 g/mol
Synonyms	4,4'-Bis(α-methylbenzyl)diphenylamine; Bis(α-methylbenzyl)diphenylamine; Antioxidant 445; Naugard 445; Vanox 445; p,p'-Dicumyl diphenylamine; N,N-Bis(4-(1-phenylethyl)phenyl)aniline
EINECS	Contact for details

Quality Control

Our 4,4'-Di(A-Methylbenzyl)Diphenylamine is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards and consistent performance. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key physical parameters is provided with every shipment to guarantee reliable quality and traceability for your production needs.

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.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	95 - 100 °C
Loss on Drying	≤ 0.5 %

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