抄録
Degradation products of cyclo-octaphosphate and linear octaphosphate under several conditions were analyzed using the liquid chromatographic system recently devised by us. cyclo-Polyphosphates larger than tetramer, cyclo-penta- and -hexaphosphate were found in the degradation products in weakly acidic media and in the presence of Al3+ and Cu2+ ions. The mechanism of these cyclo-polyphosphate abstractions in the hydrolysis reactions of octaphosphate is discussed.