Comparing E932 - Nitrogen oxide vs E942 - Nitrous oxide
Overview
Synonyms
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Found in 170 products
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Search volume over time
Interest over time for 2 keywords in U.S. during the last 10 years.
Interest over time for 3 keywords in U.S. during the last 10 years.
Popular questions
Is nitrogen oxide a greenhouse gas?
Nitric oxide (NO), often called “nitrogen oxide,” is not considered a significant greenhouse gas; nitrous oxide (N2O, a different nitrogen oxide used as E942) is a potent greenhouse gas.
What is the formula for nitrogen oxide?
The common “nitrogen oxide” in this context is nitric oxide, with the formula NO (other nitrogen oxides include NO2 and N2O).
Where does nitrogen oxide come from?
It’s formed during high‑temperature combustion (e.g., engines, power plants) and produced industrially by catalytic oxidation of ammonia (Ostwald process).
Is nitrogen oxide harmful?
Yes—NO and NO2 are respiratory irritants, and high exposures can damage the lungs; they are regulated air pollutants.
What does a catalytic converter turn nitrogen oxide into?
Automotive three‑way catalytic converters reduce NOx primarily to nitrogen (N2) and oxygen (O2), often yielding N2, CO2, and H2O using CO and hydrocarbons as reductants.
What is nitrous oxide used for?
In foods, E942 is used as a propellant and foaming gas for aerosol whipped cream and similar products, and it helps limit oxidation by displacing oxygen; outside food, it’s also used medically for sedation and analgesia.
Why don't dentists use nitrous oxide anymore?
Many dentists still use it; where it’s reduced or discontinued, it’s usually due to practice policies, monitoring and ventilation requirements, costs, or infection-control considerations, not because it’s been broadly banned.
How does nitrous oxide work?
As a food additive, it dissolves in cream under pressure and expands into fine bubbles when released, whipping and dispensing the product while displacing oxygen to slow oxidation.
How long does nitrous oxide last?
In medical/dental use, its effects generally wear off within a few minutes after inhalation stops; in whipped cream, the gas remains in the foam for hours but gradually diffuses out.
Is nitrous oxide flammable?
No—nitrous oxide isn’t flammable, but it is a strong oxidizer that can make other materials burn faster and more intensely.