Description

N,N'-Di-2-Naphthyl-p-Phenylenediamine is a high-performance aromatic amine antioxidant and antiozonant widely used in the polymer industry. This compound is valued for its excellent ability to inhibit oxidative degradation and protect against ozone attack, thereby significantly extending the service life of sensitive materials. It is an essential additive for manufacturers in the rubber, plastics, and specialty chemical sectors seeking to enhance product durability and performance under demanding environmental conditions.

Application

• Primary antioxidant and antiozonant in the production of synthetic rubbers, including SBR, NBR, and neoprene.
• Critical additive in tire manufacturing to protect sidewalls and other components from ozone cracking and flex fatigue.
• Stabilizer for plastics and polymers such as polyolefins and polyamides to prevent thermal and oxidative degradation during processing and end-use.
• Used in the formulation of industrial rubber goods like hoses, belts, seals, and gaskets to ensure long-term elasticity and integrity.
• Acts as a polymerization inhibitor and stabilizer in certain chemical synthesis processes.
• Employed in the production of wire and cable insulation materials to protect against environmental stress.
• Component in adhesive and sealant formulations to improve aging resistance.
• Used in select lubricant and grease formulations as an oxidation inhibitor.

Basic Information

Product Name	N,N'-Di-2-Naphthyl-p-Phenylenediamine
CAS No.	93-46-9
Molecular Formula	C26H20N2
Molecular Weight	360.45 g/mol
Synonyms	DNPD; Di-β-naphthyl-p-phenylenediamine; Antioxidant DNP; N,N'-Bis(2-naphthyl)-1,4-phenylenediamine; 1,4-Benzenediamine, N,N'-bis(2-naphthalenyl)-; Vulkanox DNP; Antigene D; Antage DNP; p-Phenylenediamine, N,N'-di-2-naphthyl-
EINECS	202-253-8

Quality Control

Our N,N'-Di-2-Naphthyl-p-Phenylenediamine is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. The product undergoes comprehensive analytical testing, including assay, melting point determination, and impurity profiling, to meet exacting industry specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your technical requirements.

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, sparks, and open flame. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Light gray to grayish-brown powder or flakes
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	225 - 235 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.3 %

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