Liquid with freezing point above 0 Celsius that could be use at ice rinks

Is there a liquid that could be used to fill an ice rink (non-explosive, non-poisonous, etc), and have the freezing point above 0 Celsius?

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Iron- it has a freezing point well above zero degrees. Seriously though, water is used because it is plentiful, freezing point is at a useful temperature, plumbing is already understood and simple at this temperature and it is largely safe. – Rory Alsop Dec 15 '12 at 13:37
Thank you for your comment,if such a liquid exist will help me spare a lot of electricity used to freeze the water. – Muresan Dec 16 '12 at 5:27

But water is quite unusual in having this property. There are other substances that do it, but not many. The most comprehensive list I can find includes only water, silicon, gallium, antimony, bismuth and acetic acid. The metals can all be ruled out because you'd have to heat the floor up to close to their melting point. Acetic acid comes close: its melting point is $16$-$17^\circ C$, so you could in principle skate on a floor made of the stuff at only a little below room temperature. But unfortunately pure acetic acid is corrosive and has a pungent smell (it's what you can smell in vinegar, but this would be the purified version, so much more intense) so it wouldn't be suitable for a public place.