What is the freezing temperature of wine?
About 23 degrees Fahrenheit Wine is a water based solution
containing ethanol (and various other solutes), it has to get
colder than the freezing point of water (32 F or 0 C) .Generally
wine will freeze around 20 F (-7 C) depending on the type of
Household freezers can range from 5-8 degrees Fahrenheit which
is lower than the temp range it takes for wine to freeze. The water
in the wine will expand into ice crystals (water is fairly unique
in that it expands as it freezes) and since the volume of the
bottle is nearly constant, the pressure will increase; possibly
dislodging the cork.
Pure ethanol has a freezing point of approximately -173.2
degrees Fahrenheit. The water, however, will freeze at 32 F.
You may calculate the actual freezing point depression of wine
using Kfp X msolute where Kfp is the Freezing Point constant of
water (-1.86 C/m), and m is the molality of the solute