Nitrous oxide is a colourless gas. It has two nitrogen atoms and 1 oxygen atom shortened as N2O. Nitrous oxide is typically used for sedation & pain relief by medical doctors & 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 lowwer temperatures. However, when super heated the oxygen is broken off & helps combust the cars normal petrol and release more energy.
The nitrous oxide for sale here is for cooking purposes. It can be used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol and lots of other culinary uses.