Description

N,N'-Di-sec-Octyl-p-Phenylenediamine is a high-performance, sterically hindered aromatic amine antioxidant. This compound is critical for protecting polymers and synthetic materials from oxidative degradation, thereby extending their service life and maintaining their physical properties. It is an essential additive for manufacturers in the rubber, plastics, and lubricant industries seeking to enhance the durability and stability of their products under demanding conditions.

Application

• Primary antioxidant in the production of synthetic rubbers, including SBR, BR, and NBR.
• Stabilizer for polyolefins (e.g., polyethylene, polypropylene) and other engineering plastics against thermal-oxidative degradation.
• Antioxidant and anti-aging additive in lubricating oils, greases, and industrial fluids.
• Protective agent in fuel systems and other petrochemical-derived products.
• Used in the formulation of adhesives and sealants to prevent premature hardening and loss of elasticity.
• Stabilizing component for polyurethane and other elastomeric systems.

Basic Information

Product Name	N,N'-Di-sec-Octyl-p-Phenylenediamine
CAS No.	28633-36-5
Molecular Formula	C28H52N2
Molecular Weight	416.73 g/mol
Synonyms	p-Phenylenediamine, N,N'-bis(1-methylheptyl)-; Dioctylated-p-Phenylenediamine; DOPD; Antioxidant 288; Vulkanox 4030; Santoflex 77; UOP 788; Bis(1-methylheptyl)-p-phenylenediamine
EINECS	249-141-7

Quality Control

Our N,N'-Di-sec-Octyl-p-Phenylenediamine is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color, and performance. A comprehensive Certificate of Analysis (COA) documenting identity, assay, and impurity profiles is provided with every shipment to guarantee consistency and compliance with your formulation 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 material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) in the headspace of partially used containers is recommended to preserve efficacy.

Specification

Item	Specification
Appearance	Brown to dark red viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0 %
Color (Gardner)	≤ 12
Moisture (Karl Fischer)	≤ 0.2 %
Ash Content	≤ 0.1 %

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