We find, as expected, that as T g is approached from the liquid state, the slope of the density as a function of temperature increases towards the solid phase, and upon the establishment of the latter (Figure left panel). Somewhat surprisingly, we also find that this trend is further enhanced in data sets that explore temperatures far from the transition (low curing, high T). Furthermore, we observe that all the data can be collapsed onto a master curve (Figure middle), where the 95% data is used as reference. Each data set was rescaled by both shifting and stretching in the horizontal direction and by shifting over the vertical axis (Table ).