dicresyldithiophosphoric acid O,O-bis(methylphenyl) hydrogen dithiophosphate Phosphorodithioic acid, O,O-bis(methylphenyl) ester cresyl aerofloat o,o-ditolyl phosphorodithioate phosphorodithioic acid, o,o-ditolyl ester Dithiophosphate 25 O,O-bis(2-methylphenyl) hydrogen dithiophosphate