Description

4-Methyldiphenylamine is a versatile aromatic amine derivative, primarily valued as a key intermediate in the synthesis of high-performance antioxidants, dyes, and pharmaceuticals. Its chemical structure makes it an effective stabilizer and chain terminator in polymer systems, protecting materials from oxidative degradation. This compound is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product longevity and performance.

Application

• Polymer Antioxidant Intermediate: A crucial building block for synthesizing hindered amine and phenolic antioxidants used in plastics, rubber, and synthetic fibers.
• Lubricant and Fuel Additive: Serves as a precursor for additives that prevent oxidation and sludge formation in industrial oils, greases, and fuels.
• Dye and Pigment Manufacturing: Used in the production of various azo dyes and organic pigments for textiles, inks, and coatings.
• Pharmaceutical Synthesis: Acts as an intermediate in the creation of certain active pharmaceutical ingredients (APIs) and fine chemicals.
• Chemical Research & Development: Employed as a standard or reagent in organic synthesis and material science research.
• Photographic Chemicals: Can be utilized in the synthesis of certain compounds used in photographic developers.

Basic Information

Product Name	4-Methyldiphenylamine
CAS No.	620-84-8
Molecular Formula	C₁₃H₁₃N
Molecular Weight	183.25 g/mol
Synonyms	p-Methyldiphenylamine; N-(4-Methylphenyl)aniline; 4-MDPA; Benzenamine, 4-methyl-N-phenyl-; Aniline, N-p-tolyl-; p-Tolyldiphenylamine; 4-(Phenylamino)toluene; N-Phenyl-p-toluidine
EINECS	210-658-0

Quality Control

Our 4-Methyldiphenylamine is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay by HPLC, identification by FT-IR, and impurity profiling, to ensure it meets precise specifications for purity and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed-upon standards.

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 and should be kept under an inert atmosphere (e.g., nitrogen) for long-term storage to maintain stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	88 - 92 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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