Comparing E297 - Fumaric acid vs E366 - Potassium fumarate
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Popular questions
Is fumaric acid bad for you?
No—at the small amounts used in foods it’s not considered harmful; very high intakes may irritate the stomach or teeth due to its acidity.
Is fumaric acid safe in food?
Yes; it’s an approved food acidulant (e.g., GRAS in the U.S.) and EFSA has found no safety concern at authorized uses and levels.
Is fumaric acid vegan?
Yes; it’s typically made synthetically or by microbial fermentation and does not require animal-derived ingredients.
What is fumaric acid in food?
An acidulant that adds tartness, controls pH, and functions as a slow-dissolving leavening acid—commonly used in beverages, confections, and tortillas to improve flavor and shelf life.
What is fumaric acid made from?
Commercially it’s produced by isomerizing maleic anhydride/maleic acid (petrochemical route) or by fermenting sugars with fungi such as Rhizopus; it also occurs naturally in small amounts in some plants and fungi.
How to flash e366 to e347?
You can’t “flash” one E-number to another: E366 (potassium fumarate) and E347 are different additives; switching would require reformulating the product, not any kind of update.
How to order potassium fumarate?
Purchase from food-ingredient suppliers or chemical distributors and specify food/FCC or EU food-grade E366; request a certificate of analysis and confirm it’s permitted for your intended use locally.
How to reset e366?
There’s nothing to reset—E366 is simply the E-number for potassium fumarate, an ingredient, not a device or error code.
What is low e366?
There’s no standard “low E366” label; when used, potassium fumarate is typically added at low levels as an acidity regulator.
What is the e number of potassium fumarate?
E366.