Propellent gas

Propellent gases are substances used to expel food from a container, typically in aerosol cans. They are often compressed gases like nitrous oxide or carbon dioxide, which are naturally occurring or produced industrially. These gases create pressure inside the can, allowing the product to be dispensed as a foam or spray when the nozzle is activated.

Propellent gases are primarily used to dispense products like whipped creams, squirty creams, and other aerated foods. Their function is to create a light, airy texture and allow for easy, controlled dispensing from an aerosol container. They are essential for achieving the characteristic texture of products like whipped cream.

Propellent gases such as nitrous oxide (E942) and carbon dioxide (E290) are authorised food additives in Great Britain. They are generally considered safe when used as propellants in food. At typical intake levels used in food, they are not associated with adverse health effects. Concerns about nitrous oxide relate to its potential for misuse as an inhalant, which is separate from its authorised use in food.