Nitrous oxide is a colourless gas. It has two nitrogen atoms & a single oxygen atom written as N2O. Nitrous oxide is usually used for anesthesia & 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 fuel booster in cars. Nitrous oxide is not flammable at low temperatures. However, when super heated the oxygen is detached and helps combust the cars ordinary petrol and release more power.
The nitrous oxide for sale here is for culinary uses. It can be used as a foaming agent in food & drink, whipping cream, making mousses, infusing flavours into alcohol & lots of other culinary uses.