| Name | Diphenylmesitylphosphine oxide |
| Synonyms | Diphenylmesitylphosphine oxide Phosphine oxide, diphenyl(2,4,6-trimethylphenyl)- |
| CAS | 91239-43-9 |
| Molecular Formula | C21H21OP |
| Molar Mass | 320.36 |
| Density | 1.12±0.1 g/cm3(Predicted) |
| Boling Point | 498.0±45.0 °C(Predicted) |