Nitrous oxide is a colourless gas. It has two nitrogen atoms & one oxygen atom written as N2O. Nitrous oxide is typically used for anesthesia and pain relief by medical professionals & dentists. 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 low temperatures. However, when super heated the oxygen is release & helps combust the cars normal petrol and release more power.
The nitrous oxide for sale here is for culinary purposes. It is used as a foaming agent in food & drink, whipping cream, making mousses, infusing flavours into alcohol & lots of other foodcooking applications.