Nitrous oxide is a colourless gas. It has two nitrogen atoms & 1 oxygen atom denoted as N2O. Nitrous oxide is usually used for anesthesia and pain relief by medical professionals and dental professionals. It has also been misused by people for recreational reasons.
Another use for nitrous oxide gas is as a petrol booster in cars. Nitrous oxide is not flammable at low temperatures. However, when super heated the oxygen is release & helps burn the cars usual fuel and release more power.
The nitrous oxide for sale here is for food & drink purposes. It is used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol and lots of other culinary uses.