Order number: 101-75-7
Part number: AC100032471
4-(Phenylazo) Diphenylamine is used across pharmaceutical, biochemical, and research settings as a pH indicator due to its molecular formula of C18H15N3 and molecular weight of 273.3. This compound belongs to the class of aromatic amines, featuring two phenyl groups and a phenylazo group. Its structure allows it to exhibit color changes in response to acidity or basicity, making it valuable in various analytical applications. As with many chemicals, it carries a Warning signal word, indicating potential harm if swallowed
| Name | Value | |
|---|---|---|
| WGK | : | 1 |
| EG-Nr. | : | 202-972-3 |
| CAS No. | : | 101-75-7 |
| Molar mass (M) | : | 273,34 g/mol |
| Colour conversion | : | red - yellow |
| Empirical formula | : | C18H15N3 |
| Melting point (mp) | : | 91 °C |
| Transition range pH | : | 1,2 - 2,5 |
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© 2026 Copyright. All Rights Reserved.