Nitrous oxide is a colourless gas. It has two nitrogen atoms and one oxygen atom denoted as N2O. Nitrous oxide is commonly used for sedation and pain relief by medical professional and dentists. It has also been misused by people for recreational purposes.
Another use for N2O gas is as a fuel booster in cars. Nitrous oxide is not flammable at low temperatures however, when super heated the oxygen is release and helps burn the cars normal fuel and release more power.
The nitrous oxide sold here is for food and drink purposes. It is used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol and many other culinary applications.