Description

P,P'-Dioctyldiphenylamine is a high-performance, sterically hindered aromatic amine antioxidant. This compound is valued for its excellent thermal stability and effectiveness in preventing oxidative degradation in various substrates. It is a critical additive for manufacturers in the polymer, lubricant, and fuel industries seeking to enhance product longevity and performance under demanding conditions.

Application

• Primary antioxidant in the stabilization of polyolefins (e.g., polyethylene, polypropylene) and other polymers against thermal-oxidative degradation during processing and long-term service.
• Key additive in synthetic lubricants and industrial oils to inhibit sludge formation, viscosity increase, and acid generation, thereby extending service life.
• Stabilizer for fuels and hydrocarbons to prevent gum formation and maintain fuel system cleanliness.
• Antioxidant component in elastomers and rubber compounds to protect against heat aging and cracking.
• Used in adhesives, sealants, and coatings to improve resistance to environmental weathering and thermal stress.
• Employed as a stabilizer in hot-melt adhesives and other thermoplastic formulations to maintain color and physical properties during high-temperature application.

Basic Information

Product Name	P,P'-Dioctyldiphenylamine
CAS No.	15721-78-5
Molecular Formula	C28H43N
Molecular Weight	393.65 g/mol
Synonyms	Bis(4-octylphenyl)amine; Dioctyldiphenylamine; 4,4'-Dioctyldiphenylamine; Antioxidant DODPA; Vanlube 81; Octylated diphenylamine; p,p'-Di-n-octyldiphenylamine; N,N-Bis(4-octylphenyl)amine
EINECS	239-832-6

Quality Control

Our P,P'-Dioctyldiphenylamine is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, identity, and key parameters is provided with each shipment to guarantee consistency and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources.

Specification

Item	Specification
Appearance	Light yellow to amber viscous liquid or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Color (Gardner)	≤ 5
Moisture (KF)	≤ 0.1%
Ash Content	≤ 0.1%

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