TABLE OF POLYMORPHIC FORMS OF AMMONIUM NITRATE
Polymorphic
form | range of
existance
[ 0C ] | change
of volume
[ cm3/g ] | heat of
transformation
[KJ/mol] | specific
density
[g/cm3 ] | kind of
crystalogrphic
form | | V | <-18 | - | - | - | heksagonal |
| IV |
(-18;32,2) | -0.016 | 0,54 | 1,72 | orthorombic II |
| III | (32,2;84,2) | +0,022 | 1,59 | - | orthorombic I |
| II | (84,2;125,2) | -0,008 | 1,34 | 1,62 | tetragonal |
| I | (125,2;169,6) | +0,013 | 4,22 | 1,56 | cubic |
| melt | >169,6 | - | - | - | - |