80 proof vodka freezes at -16.51*F. All alcohol will freeze,100% ethanol freezes at approx, -175*F. So depending on the ethanol to water ratio in the liquor it will freeze between 32*F and -175*F. A deep freezer/chest freezer temp is usually between -10*F and -20*F, so your liquor could freeze or become slushy.. An everyday freezer is set at about 0*F, so your liquor should be safe there.
Very interesting Mike.