Nitrous oxide is a colourless gas. It has 2 nitrogen atoms and a single oxygen atom shortened as N2O. Nitrous oxide is commonly used for sedation & pain relief by medical professionals 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 low temperatures. However, when super heated the oxygen is broken off and helps combust the cars ordinary fuel and release more power.
The nitrous oxide sold here is for cooking purposes. It can be used as a foaming agent in food & drink, whipping cream, making mousses, infusing flavours into alcohol and lots of other foodcooking applications.