Comparing E932 - Nitrogen oxide vs E948 - Oxygen

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Overview

E932 - Nitrogen oxide

Nitrogen oxide (E932) refers to nitric oxide, a reactive gas with the chemical formula NO. It is sometimes mentioned alongside food packaging gases, but it is not the same as nitrous oxide (E942) or nitrogen (E941), which are widely used in foods.

E948 - Oxygen

Oxygen (E948) is a colorless, odorless gas used in food packaging to help keep some foods looking and tasting their best. In “modified atmosphere packaging” (MAP), it can be added to the headspace of a pack, especially for red meats, to support a bright, appealing color and maintain product quality. It is the same oxygen found in air, but supplied at food-grade purity for safety.

Synonyms

E932

Nitrogen oxide

E948

Oxygen

element 8

Functions

packaging gas propellant

packaging gas

Origins

Synthetic

Products

Found in 0 products

Found in 8 products

Search rank & volume

#1845.4K / mo🇺🇸U.S.

#1897K / mo🇺🇸U.S.

Awareness score

Awareness data is not available.

×1090.87

over-aware

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.