Nitrous oxide is a colourless gas. It has 2 nitrogen atoms and one oxygen atom denoted as N2O. Nitrous oxide is usually used for sedation and pain relief by medical professionals & dental professionals. It has also been misused by people for recreational purposes.
Another use for nitrous oxide gas is as a fuel booster in cars. Nitrous oxide is not flammable at cooler temperatures. However, when super heated the oxygen is release & helps combust the cars usual petrol and release more power.
The nitrous oxide sold here is for cooking purposes. It can be used as a foaming agent in food & drink, whipping cream, making mousses, infusing flavours into alcohol and many other foodcooking uses.