Butane
Score impact
0.00
points/product
Description
E943A, known as butane, is a food additive classified as a propellant in the European Union. It is a saturated hydrocarbon with the formula C4H10, obtained mainly from petroleum refining or natural gas. Industrially, it is purified by fractional distillation and processes to remove impurities such as sulfur and aromatic compounds, yielding a high-purity gas suitable for food use.
Its physicochemical properties include a boiling point of -0.5 °C, low solubility in water, and high flammability. In the food industry, butane is used as a propellant in aerosols for products such as whipped cream, spray oils, and non-stick coatings. Its function is to expel the product from the container without altering its taste or composition.
Historically, butane was approved as a food additive in the EU following evaluations by EFSA (European Food Safety Authority) and the Joint FAO/WHO Expert Committee on Food Additives (JECFA). EFSA established that a specific Acceptable Daily Intake (ADI) is not necessary, as its use as a propellant does not imply significant dietary exposure.
The overall safety assessment is favorable, considering it safe under authorized conditions of use. On labeling, it must appear as "butane" or "E943A" in the ingredient list. Despite its safety, there are controversies related to its fossil origin and environmental impact, although not with direct food safety.
E943A is used exclusively as a propellant gas in food aerosols. The authorized food categories according to Regulation (EC) 1333/2008 include: whipped cream, vegetable oils in spray, and mold release coatings.
In the Spanish market, products such as aerosol cream (e.g., Central Lechera, Hacendado) and spray olive oils (e.g., Carbonell, La Española) contain butane. The authorized limits are quantum satis (no specific numerical limit), provided good manufacturing practices are followed. Comparatively, the FDA (USA) also allows butane as a propellant in food aerosols under the GRAS (Generally Recognized as Safe) category, with similar restrictions. In Japan, its use is permitted but with maximum residue limits.
EFSA has confirmed that dietary exposure to butane is negligible, as it evaporates almost completely when the product is dispensed.
No significant adverse effects from the consumption of butane as a food additive have been documented. EFSA and JECFA conclude that, due to its volatility and low solubility, butane does not accumulate in the body and is rapidly eliminated by exhalation. No acute or chronic toxic effects have been identified at levels of dietary exposure.
Animal studies show no carcinogenicity or genotoxicity. Sensitive populations such as asthmatics or individuals with multiple chemical sensitivity do not present specific adverse reactions. No interactions with medications are known. The main controversy lies in its flammability and risk of intentional inhalation (abuse), but this does not apply to food use.
In conclusion, butane is considered safe for the consumer when used in accordance with good manufacturing practices.
- Butane
- n-Butane
- Normal butane
- R600a
- Methylethylmethane
- Butyl
- Butyl hydride
- Butane
- n-Butane
- Liquefied petroleum gas (LPG)
- Commercial butane
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