Freeze the Vodka. Most Russian Vodka has 40% alcohol content by volume (80 proof) and because of the low freezing point of alcohol, Vodka can be kept in the freezer. 80 proof vodka will freeze at approximately -26.95 ° C or -16.51 °F. For 100 proof freezes at around -40.43 °C or -40.78 °F Source:Wiki