What temp does beer freeze?
 

At what temp does beer freeze? OK, I know it will depend on a few factors, but let's say a 5% ABV average beer.

I want to try bottling from my keg sometime down the road and was told to get it super cold, almost freezing.

Then I also want to force carb and bottle a sparkling wine, I assume I can go colder with the wine, which will be a benefit as my regulator only goes up to 30PSI and I understand sparkling wines need to be carbed at 40, so I assume if I can get it super cold at 30, when it warms up to serving temp, it should be carbed just about right.

since the beer is almost completely made of water...I would go with 32 degrees.

Um, no. I just took a 7% Dopplebock down to 28f, no freezing.


.

I think it's right around 24F. But I've noticed once you open a can/bottle of beer, they freeze even faster.

Found this bit of info:

So, if your ABV is 7% and your OG was 1.07, you'd get the following:

A = 5.6
E = 16.84

(-0.42*5.6) + (0.04*16.84) + 0.2 = -1.4784*C or 29.33888*F

Beer freezes at:

°C = -0.42(ABW%) + 0.04(OG[as °Plato]) + 0.2

So a 1.0508 OG (15.53 °Plato), 4.95% alcohol by weight beer will freeze at

-0.42(4.95) + 0.04(15.53) + 0.2 = -1.26°C or about 29.73°F

A much stronger beer of 21.84°P and 7.18% ABW will yield a slightly lower freezing point of -1.94°C or 28.51°F

No. The general phenomenon is melting/freezing point depression:

http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/meltpt.html

Even tiny amounts of an impurity can lower the melting/freezing point
by measurable amounts.

Ray

Did I start a fight?

So when I go to bottle from my keg, I should be safe with 30 ish degrees, I could set my thermostat to 32 and it will vary the temp between 28 and 32 with teh liquid hovering right around 32, I should be safe.

So for my wine, I should be able to go a few degrees cooler.

What about pressure? will the pressure in the keg affect freezing temp?

Hmmm....

The lowest possible freezing point of your Dopplebock would be (using this information as a basis):

OG: 1.072 (from style guidelines)
ABV: 7%

OG as Plato: 17.51
ABW: 5.53

-1.42°C or 29.44°F

You might want to get your thermometer checked. For a freezing point of 28°F you would have needed an OG of -2.225°P and, well, that's just not possible.

Either that or your ABV% is considerably higher than you calculated.

BillC68. 30 degrees is safe for any beer or wine. It won't freeze at that temp.