Trimethylphosphine oxide

Trimethylphosphine oxide
Names
IUPAC name
Dimethylphosphorylmethane
Other names
  • Trimethylphosphine oxide
  • Trimethylphosphine P-oxide
  • Trimethylphosphane oxide
  • Trimethyl phosphone
Identifiers
3D model (JSmol)
Abbreviations TMPO
ChEMBL
ChemSpider
ECHA InfoCard 100.010.577
EC Number
  • 211-633-9
UNII
  • InChI=1S/C3H9OP/c1-5(2,3)4/h1-3H3
    Key: LRMLWYXJORUTBG-UHFFFAOYSA-N
  • CP(=O)(C)C
Properties
(CH3)3PO
Molar mass 92.078 g·mol−1
Appearance White crystalline solid
Odor Odorless
Density 0.9 g/cm3
Melting point 140–141 °C (284–286 °F; 413–414 K)
Boiling point 193.7 °C (380.7 °F; 466.8 K)
Soluble
Solubility Soluble in polar organic solvents.
Structure
Tetrahedral at P
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Serious eye irritation and damage
GHS labelling:
Warning
H302, H315, H319, H335
P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
NFPA 704 (fire diamond)
2
1
0
Flash point 71 °C (160 °F)
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Trimethylphosphine oxide is an organophosphorus compound with the chemical formula (CH3)3PO. It forms highly hygroscopic, white, needle-shaped crystals. It forms a dihydrate (CH3)3PO·2H2O.

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