important indirectly as a precursor toPCl5,POCl3andPSCl3.
which in turn enjoy many applications inherbicides,insecticides,plasticisers,oil
additives, andflame retardants.
For example oxidation of PCl3givesPOCl3,
which is used for the manufacture oftriphenyl
phosphate, which find application asflame
They are also used to makeinsecticidessuch