| English name | Diphenylphosphine |
| CAS No. | 829-85-6 |
| Structural formula |  |
| Molecular formula | C 12 H11P |
| Molecular weight | 186.19 |
| Melting point | 280 °C(lit.) |
| Density | 1.07 g/mL at °C(lit.) |
| Characters | colorless liquid |
| Use | organic intermediate and activator |