According to http: The container probably is more important.
Yes, water can stay liquid below zero degrees Celsius. The nuclei which start the freezing are larger particles, such as specks of dust.
I came to the following conclusion on my own, so I may be completely off about it. For some reason, they suggest that the natural ice formation begins to occur at about -71 C and that supercooled water freezes at about -73 C. Premium Profile. Enjoyed this article? Flag as... The frigid air first cools down the liquid molecules closest to the surfaces of the bottle, and these cooler molecules fall to the bottom. It is not something I cannot duplicate this on demand as I a have not figured out the condition which makes it happen.
Without ice nucleation, it remains liquid. In the morning, I take it out and drink it. After 10 minutes, carefully add more ice to the bowl as per step 3.
Cite This Page: Without impurities, the water has nothing to begin crystalizing on, and that's why it can supercool and superheat too.
Dangle or drop an ice cube into the water, and watch ice crystals spread around the cube. A speck of dust, or a flake of frost from the screw-cap falling into the bottle are enough to get the freezing going, and the crystals will build on each other and spread through the water in the bottle.
Oh, about the slush, due to the combination of living in tropical country, and the filtering I mentioned previously, when I first watched the phenomenon in internet, I never realize the ice produced is slush, in fact the first time I knew the existence of slush is when I held my first own supercooled water bottle.
With a lower freezing point, the temperature around the glass can get cooler.
These supercooled water droplets can cause problems for airplanes.