Pandect of quaternary phosphonium salts (1): Definition
The surfactants having P+ functional group.
General formula:
According to hydrophobic group, quaternary phosphonium salts can be subdivided into the following types:
(1), alkyl quaternary phosphonium salts;
(2), alkenyl quaternary phosphonium salts;
(3), aryl quaternary phosphonium salts;
(4), heterocyclic quaternary phosphonium salts;
(5), mixed type quaternary phosphonium salts;