at what temperature does antifreeze expand

[parset]

does antifreeze expand as it gets colder like it does as it gets warmer

[rob.hine]

I would have thought not. Liquids expand when heated due to the molecules getting excited(moving around). When they get really excited they can break away from the surface of the liquid and escape, i.e they become vapour. I suppose it starts to expand at the point at which the liquid starts to thaw after being frozen. I'm not sure at what temperature anti freeze freezes, but i was involved in the design and testing of a machine which chilled antifreeze and then circulated it around bottles of vodka (which were sitting in latex sleeves) to chill the vodka down to around zero degrees celcius. To speed up the cooling time we had the antifreeze running at around minus forty five degrees. When at room temperature the antifreeze was runny like water, but when at minus fortyfive it was noticably thicker, more like single cream. It also made your fingers tingle when you dipped them in!