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Ingredient Guide

🇺🇸 Citric Acid on Food Labels in US

Citric Acid is permitted with proper declaration in United States: declare as "citric acid" in the ingredient list.

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What the Rule Is

Natural organic acid used as an acidulant, preservative, and flavoring in a vast range of food products. In United States, Citric Acid is regulated under FDCA & FSMA as a food acidity-regulator. FDA GRAS (21 CFR 184.1033). Declared as "citric acid" in ingredient list — no functional class required but "acidulant" or "preservative" context is sometimes given. Produced commercially by fermentation of Aspergillus niger — relevant for corn allergy considerations, though not an allergen under FALCPA.

What You Must Include
  • Declare as "citric acid" in the ingredient list
  • Declare with functional class: "acidity regulator" and E-number E330
  • Review all compound ingredients for hidden sources
  • Cross-check all compound ingredients and sub-ingredients for hidden sources
Common Violations
  • Incorrect or missing declaration name — must use "citric acid"
  • Using an ambiguous or abbreviated name that does not identify Citric Acid
  • Omitting the E-number E330 where required
  • Not updating the label after recipe changes involving this ingredient
  • Failing to check compound ingredients for hidden Citric Acid content
Examples: Compliant vs Non-Compliant

Compliant Examples

"acidity regulator: citric acid"
"citric acid" in ingredient list
Full ingredient line: "Ingredients: ... citric acid ..."

Non-Compliant Examples

Using a synonym (Citric acid, Citrate) without the approved declaration name
Ingredient list with "Citric Acid" without functional class or E-number
"Natural [ingredient category]" without specific name where specific name is required
How LabelGuard Checks This

LabelGuard scans your label for Citric Acid and all its common names (E330, Citric acid, Citrate) to verify correct declaration, required E-numbers, and proper functional class labeling under US rules.

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Frequently Asked Questions

How must Citric Acid be declared on food labels in US?

Declare as "citric acid" in the ingredient list. FDA GRAS (21 CFR 184.1033). Declared as "citric acid" in ingredient list — no functional class required but "acidulant" or "preservative" context is sometimes given. Produced commercially by fermentation of Aspergillus niger — relevant for corn allergy considerations, though not an allergen under FALCPA.

What are the common synonyms and hidden sources of Citric Acid?

Citric Acid may appear under the following names: E330, Citric acid, Citrate. Common hidden sources include: Soft drinks, Confectionery, Preserved vegetables, Cheese, Ice cream, Hummus, Canned goods.

Is Citric Acid banned or restricted in any market?

Citric Acid is permitted in all major markets with proper declaration.

Regulation Sources

Last updated: 2026-04-01

Disclaimer: This information is for guidance only and does not constitute legal advice. Always consult official regulations and seek professional legal advice for specific compliance questions.

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