Nitrous oxide is a colourless gas. It has 2 nitrogen atoms & one oxygen atom denoted as N2O. Nitrous oxide is usually used for sedation and pain relief by medical doctors and dentists. 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 cooler temperatures. However, when super heated the oxygen is release and helps combust the cars ordinary petrol and release more energy.
The nitrous oxide for sale here is for culinary uses. It is used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol & lots of other foodcooking uses.