Is Ascorbic Acid Banned? EU vs US Status, Risks & Where It Hides
TL;DR: Ascorbic Acid is allowed in the EU but allowed in the US (preservative).
Also called vitamin C. (E300) CAS 50-81-7.
Other names: vitamin C, E300, L-ascorbic acid, INS 300
Is Ascorbic Acid banned in the EU?
| EU status | Allowed |
|---|---|
| US status | Allowed |
| Risk level | low |
| Where it shows up | Tropicana Orange Juice, Arnold Bread, Oscar Mayer Bologna, Kellogg's Corn Flakes, Various multivitamins |
| CAS number | 50-81-7 |
What is Ascorbic Acid?
Ascorbic acid is the chemical name for vitamin C, an essential water-soluble vitamin found abundantly in fruits and vegetables. As a food additive (E300), it functions as an antioxidant preservative, preventing oxidative browning and rancidity. Commercial ascorbic acid is produced by fermentation of glucose, most commonly from corn.
Why is Ascorbic Acid used in food?
Prevents oxidative browning in cut fruits and vegetables, protects fats from rancidity, and is added as a nutritional supplement; also used as a dough improver in bread.
Is Ascorbic Acid dangerous? Documented risks
Generally recognized as safe. Note: when ascorbic acid is combined with sodium benzoate or benzoic acid in acidic beverages, benzene can form — a Class 1 carcinogen. This combination should be avoided in formulations. As a standalone additive, ascorbic acid is not only safe but nutritionally beneficial. Very high supplemental doses (>2 g/day) can cause diarrhea and kidney stone risk in predisposed individuals.
Common US products containing Ascorbic Acid
How to avoid Ascorbic Acid: safer alternatives
Rosemary extract and natural vitamin E (tocopherols) provide antioxidant preservation in fats and oils.
Frequently asked questions about Ascorbic Acid
Is ascorbic acid in food healthy?
Yes — it is vitamin C. It provides nutritional benefit and is one of the safest food additives.
Is ascorbic acid the same as vitamin C?
Yes, they are chemically identical. The body cannot distinguish synthetic from food-sourced ascorbic acid.
Why is ascorbic acid a preservative?
It is an antioxidant that prevents oxidation reactions that cause browning, rancidity, and flavor degradation.
Is ascorbic acid banned anywhere?
No. It is universally approved and considered a beneficial nutritional additive.
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Sources
- FDA 21 CFR 182.3013 — Ascorbic acid — FDA
- Re-evaluation of ascorbic acid (E 300) as a food additive — EFSA
Our scores are never influenced by brands. Last updated 6/11/2026.