In the system i-Am4NCl-H2O two new clathrate hydrates, i-Am4NCl . 32H(2)O a
nd i-Am4NCl . 27H(2)O, were revealed, along with the known compound i-AM(4)
NCl . 38H(2)O. The crystals of all the hydrates were isolated, and their co
mpositions and melting points were determined.