Movie of "Instant Hot Ice" that will solidify when you touch

It is a movie of "warm ice" that solidifies when it comes into contact with sodium acetate and water. BeforeSupercooled movieAlthough it introduced, it seems to be warm, unlike that.

Moreover, it seems that we can make a reusable warmer using this reaction.

Details are as follows.
Make Instant HOT ICE! Video

First, sodium acetate is dissolved in boiling water so as to be saturated. In the movie it seems to be putting quite appropriately ....


Mix gently.


Transfer it to a glass and cool it.


After cooling it moderately, replace it with a container to be frozen.


When you are ready, touch the liquid carefully. Then ...


It gathers from the touch.


Mass spreads out ...


The whole was like ice.


Even supercooled movies were frozen from pouring soba, but this will generate heat when set.




How to make Cairo applying this is as follows.

Magical Heat Pack

Not disposable Cairo

By placing a metal clip, switch it when it is sealed. Push the clip carefully ...


It solidifies.


Looking at a movie like this.
http://g3400.nep.chubu.ac.jp/onsenkids/kagakutoy/mhp/mhp.mpg




The sodium acetate solution is stable even in the supercooled state, so it seems that the reaction can be started using the clip. Those using this principle are sold.

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