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E 242Preservatives

Dimethyl dicarbonate

Characteristics

Additive NameDimethyl dicarbonate
E No.E 242
TypeIndividual Substance
In plain language

A preservation agent used in wines, ciders, and flavoured beverages. It kills unwanted yeasts and bacteria, preventing re-fermentation inside the bottle — without the need for heat treatment. It breaks down rapidly into carbon dioxide and methanol after use, leaving virtually no residue in the final product. EFSA considers it safe at authorised levels. The small methanol traces it leaves are well below any level of concern — similar amounts occur naturally in many fruit juices.

Conditions of Use

This additive is authorised to be used in the following 9 food categories:

14.2.3Cider and perry
Maximum Level = 250 mg/L
Footnote 24: Ingoing amount, residues not detectable
14.2.7.1Aromatised wines
Maximum Level = 250 mg/L
Footnote 24: Ingoing amount, residues not detectable
14.2.7.2Aromatised wine-based drinks
Maximum Level = 250 mg/L
Footnote 24: Ingoing amount, residues not detectable
14.2.7.3Aromatised wine-product cocktails
Maximum Level = 250 mg/L
Footnote 24: Ingoing amount, residues not detectable
14.1.5.2other
Maximum Level = 250 mg/L
only liquid tea concentrate
Footnote 24: Ingoing amount, residues not detectable
14.2.2Wine and other products defined in Annex VII part II of Regulation (EU) No 1308/2013
Maximum Level = 250 mg/L
only alcohol-free
Footnote 24: Ingoing amount, residues not detectable
14.2.8Other alcoholic beverages including mixtures of alcoholic beverages with non-alcoholic beverages and other alcoholic beverages based on distilled alcohol with alcoholic strength by volume less than 15 %
Maximum Level = 250 mg/L
Footnote 24: Ingoing amount, residues not detectable
14.2.4Fruit wine and made wine
Maximum Level = 250 mg/L
only fruit wine, alcohol reduced fruit wine and wino owocowe jakościowe, wino owocowe likierowe, wino owocowe aromatyzowane, wino z soku winogronowego, aromatyzowane wino z soku winogronowego, wino owocowe niskoalkoholowe and aromatyzowane wino owocowe niskoalkoholowe
Footnote 24: Ingoing amount, residues not detectable
14.1.4Flavoured_drinks
Maximum Level = 250 mg/L

Source

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E 242 - Dimethyl dicarbonate | E-Number Information