Phosphoric Acid

Phosphoric Acid carries a safety score of 4/5 and appears in 4,369 indexed US food products. CSPI rates it “Cut Back.”

Safety score 80.0%

4/5 from FDA SAFFA + CSPI Chemical Cuisine

How common is Phosphoric Acid vs other flagged additives?

Number of indexed products containing each of the most common flagged additives - Phosphoric Acid highlighted.

Caramel Coloring22612Red 4021595Yellow 518987Carrageenan17853Blue 116643Yellow 613560Sucralose10490Phosphoric Acid4369
Indexed products containing each flagged additive. Source: Open Food Facts ingredient lists × FDA SAFFA × CSPI Chemical Cuisine.
CSPI Rating
Cut Back
FDA Status
GRAS
Safety Score
4/5

Function

ANTIMICROBIAL AGENT, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, FUMIGANT, MALTING OR FERMENTING AID, NON-NUTRITIVE SWEETENER, PH CONTROL AGENT, SEQUESTRANT

Safety Assessment

Phosphoric Acid is generally considered safe for consumption based on available regulatory and scientific data. It has a safety score of 4/5, indicating broad acceptance by food safety authorities. CSPI recommends limiting consumption of this ingredient.

What the Data Says About Phosphoric Acid

Phosphoric Acid currently appears in 4,369 products across the OpenFoodFacts catalog we index, which gives a concrete measure of its footprint on US grocery shelves. Our internal safety score of 4/5 synthesizes FDA Substances Added to Food (SAFFA) regulatory status - currently "GRAS" - with the Center for Science in the Public Interest (CSPI) Chemical Cuisine classification of "Cut Back." That Cut Back rating marks a gap between the two lenses: FDA's SAFFA status covers typical intake, while CSPI's review flags cumulative exposure across a modern diet as the open question this score doesn't resolve on its own.

In food manufacturing, Phosphoric Acid functions as a antimicrobial agent, flavor enhancer, flavoring agent or adjuvant, fumigant, malting or fermenting aid, non-nutritive sweetener, ph control agent, sequestrant. That technical role explains why it recurs across many product categories, formulators select specific additives for stability, shelf life, color, or texture performance, and substitution is rarely a one-for-one swap when regulations or consumer preferences shift. Inspection and outbreak data often trace back to breakdown in the control of exactly these kinds of functional ingredients, either through contaminated batches, undisclosed substitutions, or labeling errors that trigger FDA-initiated recalls.

No specific concern flags are attached to Phosphoric Acid in our current data snapshot beyond the regulatory and CSPI classifications above. That does not rule out individual sensitivity reactions, and anyone managing allergies, elimination diets, or chronic conditions should verify with a qualified healthcare professional before relying on population-level ratings.

Safety Profile at a Glance

Regulatory and safety classifications for Phosphoric Acid
Source Classification Year
FDA SAFFA GRAS 2024
CSPI Chemical Cuisine Cut Back 2024
PlainFoodSafe Score 4/5 2026
Product footprint 4,369 products OpenFoodFacts

FDA SAFFA database, CSPI Chemical Cuisine ratings, OpenFoodFacts product index. See methodology.

Frequently Asked Questions

Is Phosphoric Acid safe to eat?

Phosphoric Acid has a safety score of 4/5. The Center for Science in the Public Interest (CSPI) rates it as "Cut Back." FDA status: GRAS. Always check with a healthcare provider if you have specific dietary concerns.

What products contain Phosphoric Acid?

Phosphoric Acid is found in 4,369 products in our database, spanning various food categories and brands.

What does Phosphoric Acid do in food?

Phosphoric Acid is used as a antimicrobial agent, flavor enhancer, flavoring agent or adjuvant, fumigant, malting or fermenting aid, non-nutritive sweetener, ph control agent, sequestrant in food products.

Citation notes Regulatory status from FDA SAFFA; safety ratings from CSPI Chemical Cuisine; product presence from Open Food Facts. See our methodology. Retrieved and formatted by PlainFoodSafe Editorial.

Every figure on PlainFoodSafe is rendered directly from OpenFoodFacts and FDA data, no number is typed in by an editor. Ingredient figures are computed directly from OpenFoodFacts, FDA SAFFA, and CSPI Chemical Cuisine data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.