Comparing E355 - Adipic acid vs E297 - Fumaric acid
Overview
Synonyms
Products
Found in 771 products
Found in 3,925 products
Search rank & volume
Awareness score
Search volume over time
Interest over time for 3 keywords in U.S. during the last 10 years.
Interest over time for 3 keywords in U.S. during the last 10 years.
Popular questions
What is adipic acid used for?
In foods (E355) it’s an acidulant that provides a clean, persistent tartness and pH control in powdered drink mixes, gelatin desserts, chewing gum, and as a slow-acting leavening acid in baking powders.
How is adipic acid made?
Industrial production mainly oxidizes a cyclohexanone/cyclohexanol (KA oil) mixture with nitric acid, which generates nitrous oxide; newer routes use catalytic oxygen processes or bio-based fermentations.
Is adipic acid polar or nonpolar?
Polar, due to its two carboxylic acid groups (though its six‑carbon chain makes it less polar than shorter dicarboxylic acids).
Is adipic acid soluble in water?
Sparingly soluble in cold water (about 1.5 g/100 mL at ~25°C), with solubility increasing substantially at higher temperatures.
(3) could you substitute adipoyl chloride with adipic acid in this reaction? explain why or why not?
Not directly—acid chlorides are far more reactive acylating agents, so adipoyl chloride reacts with amines at mild conditions, whereas adipic acid generally requires activation (e.g., conversion to the acid chloride/anhydride or use of coupling/dehydrating agents) or high‑temperature condensation.
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.