Comparing E944 - Propane vs E943A - Butane

Overview

E944 - Propane

Propane (E944) is a colorless, highly flammable gas used as a propellant in aerosol food products, such as cooking oil sprays and whipped toppings. It evaporates instantly at room temperature, so only trace amounts reach the food itself under normal use. In the EU, it has specific purity criteria and is authorized for use as a food additive.

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E943A - Butane

Butane (E943a) is a food-grade liquefied gas used mainly as a propellant in aerosol products like whipped cream and cooking sprays. It flashes off quickly after dispensing, so only tiny amounts, if any, remain in the food under normal use. Regulators in the EU and U.S. allow its use when it meets strict purity rules.

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Synonyms
E944
Propane
E943a
Butane
Functions
propellant
propellant
Origins
Synthetic
Mineral
Products

Found in 32 products

Found in 12 products

Search rank & volume
#3777K / mo🇺🇸U.S.
🇺🇸U.S.
Awareness score

×304.25
over-aware

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Search volume over time

Interest over time for 2 keywords in U.S. during the last 10 years.

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Popular questions

  1. How much is propane per gallon?

    Propane prices vary by region, season, and whether it’s bulk delivery or a cylinder refill. In the U.S., recent retail refill prices often run about $2–$4 per gallon, while tank exchanges tend to cost more per gallon; check local suppliers.

  2. Does propane go bad?

    No—propane itself doesn’t expire; in a sealed cylinder it remains stable indefinitely, though the cylinder/valve condition and the odorant can degrade over time.

  3. How much does a gallon of propane weigh?

    About 4.2 lb per gallon as a liquid at 60°F (weight varies slightly with temperature).

  4. How much is a propane tank?

    A new empty 20‑lb grill cylinder typically costs about $40–$70. Large stationary tanks (250–1,000 gal) are several hundred to several thousand dollars or are often leased; prices vary by region.

  5. Where to refill propane tank?

    At propane refill stations such as propane dealers, many hardware stores, some gas stations, farm/garden centers, and RV parks; for 20‑lb cylinders you can also use exchange cages.

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