Trioctylphosphine oxide

  • TOPO
  • Tri-n- octylphosphine oxide

White crystalline powder with a sweet odor

Fixed

0.88 g · cm -3 ( 15 ° C)

48-53 ° C

212 ° C ( 39,99 Pa)

Very poor in water ( <1 g · l-1 at 20 ° C)

Attention

2830 mg · kg -1 ( LD50, rat, transdermal)

Template: Infobox chemical / molecular formula search available

Trioctylphosphine oxide is abbreviated TOPO and is used as a high boiling organic solvent, for example in the synthesis of cadmium selenide semiconductor nanocrystals. It can be prepared from phosphorus trichloride or monophosphane.

CAS registry number Dangerous Substances Directive (67/548/EEC)
779771
de