Description

N,n-Bis(3,5-Di-tert-Butyl-2-Hydroxyphenyl)-1,4-Phenylenediamine is a high-performance phenolic antioxidant and amine-based stabilizer. This compound is critically important for protecting polymers and synthetic materials from oxidative degradation and thermal aging. It is primarily needed by manufacturers in the polymer, rubber, and lubricant industries to extend product lifespan and maintain material integrity under demanding conditions.

Application

• Polymer Stabilization: Acts as a highly effective antioxidant and anti-aging agent in polyolefins (PP, PE), engineering plastics, and synthetic rubbers.
• Lubricant & Fuel Additive: Inhibits oxidation and sludge formation in industrial lubricants, greases, and fuels, enhancing their thermal stability.
• Elastomer Protection: Used in the production of tires, hoses, and seals to prevent cracking and loss of elasticity caused by heat and oxygen exposure.
• Adhesive & Sealant Formulations: Improves the shelf-life and long-term performance of hot-melt and reactive adhesive systems.
• Wire & Cable Insulation: Protects the polymer jacketing in electrical cables from degradation due to heat and environmental stress.
• Synergistic Stabilizer Systems: Often used in combination with other antioxidants (e.g., phosphites, thioesters) for enhanced stabilization performance.

Basic Information

Product Name	N,n-Bis(3,5-Di-tert-Butyl-2-Hydroxyphenyl)-1,4-Phenylenediamine
CAS No.	4810-23-5
Molecular Formula	C34H48N2O2
Molecular Weight	516.76 g/mol
Synonyms	Bis(3,5-di-tert-butyl-4-hydroxyphenyl)-1,4-phenylenediamine; Antioxidant 445; Irganox 445; 4,4'-Bis(3,5-di-tert-butyl-4-hydroxyphenyl)-1,4-phenylenediamine; N,N'-Bis(3,5-di-tert-butyl-4-hydroxyphenyl)-1,4-phenylenediamine; 1,4-Benzenediamine, N,N-bis(3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)-; Antioxidant 445FF; Phenolic Amine Antioxidant
EINECS	225-381-6

Quality Control

Our production of N,n-Bis(3,5-Di-tert-Butyl-2-Hydroxyphenyl)-1,4-Phenylenediamine adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity and performance. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are available upon request to support your quality assurance and regulatory compliance 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). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation of quality, especially after opening the original packaging. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	185 - 195 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %

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