The exfoliation of zirconium phosphate with a layered structure of the gamma-type is of interest from both a fundamental and a technological point of view. However, until now, the results reported in the literature have not been as good as those reported for alpha-zirconium phosphate. It has been found that a very good exfoliation of gamma-zirconium phosphate with the formation of very stable colloidal dispersions can be obtained at temperatures higher than 55 degrees C and for percentages of acetone in the range 35-80% in volume. The exfoliation was attributed to the formation of an expanded acetone intercalated phase in which the interlayer hydrogen bonds originally present in the gamma-ZrPO4 . O2P(OH)(2) . 2H(2)O are broken. By filtration of the colloidal dispersions, very compact and flexible self-consistent films can be obtained.