Funny thing just happened. I left my coke in the freezer, expecting the bottle to be busted I found that it wasn't even frozen at all. Liquid all the way through. Figured it was that new fake sugar chemical, but when I unscrewed the cap it instantly turned to ice. So I guess you can prevent water from freezing if you have enough pressure on it, by preventing it from expanding it doesn't crystallize. How cold can you get water in this case without turning it to ice? As cold as you want? Or does the water stop releasing heat.