CAS:20440-95-3 | 4,4'-Dimethyltriphenylamine (DMTPA)

Products Description

4,4'-Dimethyltriphenylamine, referred to as DMTPA, is also known as 4-Methyl-N-(4-methylphenyl)aniline and 4-Methyl-N-phenyl-N-(p-tolyl)aniline. Its CAS number is 20440-95-3, EINECS number is 243-822-7, molecular formula is C₂₀H₁₉N, and molecular weight is 273.37.

4,4'-Dimethyltriphenylamine appears as a white powder. It has a density of 1.079 g/cm³ or 1.1 ± 0.1 g/cm³, a melting point of 112℃, a boiling point of 417.5 ± 34.0°C at 760 mmHg, a flash point of 183.5 ± 22.5°C, a vapor pressure of 0.0 ± 1.0 mmHg at 25°C, and a refractive index of 1.627.

Basic Info

Safety Information

Risk statement is R36/37/38, which means it is irritating to the eyes, respiratory system and skin; safety statement is S26-S361.

Contact with this substance may cause irritation and allergic reactions. Please avoid contact with skin, eyes and respiratory tract. Wear appropriate personal protective equipment such as gloves, glasses and masks when operating. If you accidentally come into contact with it, rinse it immediately with plenty of water and seek medical attention.

Uses

In OLED (organic light-emitting diode) materials, 4,4'-Dimethyltriphenylamine is often used as an important intermediate. Triphenylamine and its derivatives have unique free radical properties. For example, the groups connected around the nitrogen atom of 4,4'-dimethyltriphenylamine are large, which eliminates the tension in the free radical center. At the same time, the large steric hindrance is not conducive to the reaction of free radicals. The hyperconjugated electron effect increases the stability of free radicals, which makes it have a high hole mobility and good transmission performance, which can help improve the luminous efficiency and stability of OLED devices and enhance the display effect.

Company Profile

Gnee Chem is an enterprise specialising in the research, development, production and sales of phytochemicals and fine chemicals.Our factory was established in 2016 and is located in Henan Province, covering an area of 3,600 square metres. We have a professional, well-equipped and high-quality R&D team with more than 10 years of R&D experience. Our products are widely exported to many countries, such as the United States, Russia, Canada, Australia, Europe, etc., and we provide customers with fast shipping services. We hope to establish long-term and mutually beneficial cooperation with more friends in the future, and provide the best products and services for our customers.

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