Description

N,N'-Diheptyl-p-Phenylenediamine is a high-purity, synthetic organic compound belonging to the phenylenediamine derivative class. This chemical serves as a highly effective antioxidant and antiozonant, providing critical protection against oxidative degradation and environmental stress cracking in polymer systems. It is an essential additive for manufacturers in the rubber, polymer, and specialty lubricant industries seeking to enhance the durability and lifespan of their products under demanding conditions.

Application

• Primary antioxidant and antiozonant in synthetic rubber formulations (e.g., NBR, SBR, BR).
• Stabilizer for polyurethane (PU) elastomers and other specialty polymers to prevent chain scission.
• Additive in industrial lubricants and greases to inhibit oxidation and extend service life.
• Protective agent in fuel and oil system components made from susceptible elastomers.
• Intermediate in the synthesis of more complex chemical additives and dyes.
• Used in wire and cable insulation compounds to improve environmental resistance.

Basic Information

Product Name	N,N'-Diheptyl-p-Phenylenediamine
CAS No.	35423-91-7
Molecular Formula	C20H36N2
Molecular Weight	304.52 g/mol
Synonyms	N,N'-Diheptyl-1,4-phenylenediamine; p-Phenylenediamine, N,N'-diheptyl-; Antioxidant DHP; Dioctylated p-Phenylenediamine (common industry name); Antozite 1; Vulkanox DHP; 1,4-Benzenediamine, N1,N4-diheptyl-; Diheptyl PPD
EINECS	Contact for details

Quality Control

Our N,N'-Diheptyl-p-Phenylenediamine is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters are provided 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). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to amber viscous liquid or paste
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Moisture (KF)	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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