Comparing E938 - Argon vs E939 - Helium

Overview

E938 - Argon

Argon (E938) is a colorless, odorless noble gas used in food packaging to protect products from air. It fills the headspace in packs and bottles to push out oxygen, helping keep flavors, aromas, and textures intact. Because argon is inert, it does not react with the food itself.

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E939 - Helium

Helium (E939) is a colorless, odorless noble gas used in the food industry mainly as a packaging gas and propellant. It helps push out air in packages or dispense products from aerosol cans without adding flavor or reacting with the food. You are unlikely to taste or notice it, and it rarely appears on ingredient lists.

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Synonyms
E938
Argon
element 18
E939
Helium
element 2
Functions
packaging gaspropellant
packaging gas
Origins
Mineral
Mineral
Products

Found in 2 products

Found in 1 products

Search rank & volume
#326460 / mo🇺🇸U.S.
#5062.3K / mo🇺🇸U.S.
Awareness score

×10.32
over-aware

×1518.17
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.

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Popular questions

  1. What element has 18 electrons?

    Argon (E938); a neutral argon atom has 18 electrons because its atomic number is 18.

  2. What element has 18 neutrons?

    The argon isotope argon‑36 (36Ar) has 18 neutrons (36 − 18 = 18).

  3. What element has 18 protons?

    Argon—its atomic number is 18, meaning it has 18 protons.

  4. What element has 17 protons and 18 neutrons?

    Chlorine‑35; that nucleus (17 protons, 18 neutrons) belongs to chlorine, not argon.

  5. Which element has 18 electrons?

    Argon (E938); a neutral argon atom carries 18 electrons.

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  1. Where does helium come from?

    On Earth it’s produced by the radioactive decay of uranium and thorium and is commercially extracted from certain natural gas fields by cryogenic separation.

  2. Is helium flammable?

    No—helium is non-flammable and chemically inert.

  3. How long do helium balloons last?

    Typical latex helium balloons float for about 8–12 hours (longer if treated), while foil/Mylar balloons often last 3–7 days or more depending on size and temperature.

  4. How many valence electrons does helium have?

    Two; its 1s shell is full, which is why helium is very inert.

  5. What is helium used for?

    As E939 it’s used as an inert packaging gas to displace oxygen and protect foods; more broadly, helium is used for lifting balloons, cryogenics (e.g., MRI), leak detection, pressurizing, and as a shielding gas in welding.

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