Comparing E942 - Nitrous oxide vs E949 - Hydrogen
Overview
Synonyms
Products
Found in 170 products
Found in 4 products
Search rank & volume
Awareness score
Search volume over time
Interest over time for 3 keywords in U.S. during the last 10 years.
Interest over time for 2 keywords in U.S. during the last 10 years.
Popular questions
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.
What is a hydrogen bond?
A hydrogen bond is a weak electrostatic attraction between a hydrogen atom bound to an electronegative atom (like O, N, or F) and another electronegative atom; it’s unrelated to E949, which is hydrogen gas used mainly as a packaging/propellant additive.
Does hydrogen peroxide expire?
Yes—household hydrogen peroxide (not E949) slowly decomposes to water and oxygen; unopened it typically lasts up to about a year in a cool, dark place, but after opening it’s best used within 1–3 months.
Is hydrogen water good for you?
Hydrogen water is water infused with dissolved hydrogen gas (E949); it’s generally safe, but evidence for meaningful health benefits is limited and not conclusive.
Is hydrogen a metal?
No—hydrogen is a nonmetal under standard conditions; as E949 it’s the colorless, flammable gas used as a food-packaging/propellant additive.
Does hydrogen peroxide kill mold?
3% hydrogen peroxide can kill mold on hard, nonporous surfaces, but it’s less effective on porous materials like wood or drywall; use in a ventilated area and don’t mix it with bleach or vinegar.