Ammonium Sulfate

Ammonium Sulfate carries a safety score of 3/5 and appears in 1,697 indexed US food products.

Safety score 60.0%

3/5 from FDA SAFFA + CSPI Chemical Cuisine

How common is Ammonium Sulfate vs other flagged additives?

Number of indexed products containing each of the most common flagged additives - Ammonium Sulfate highlighted.

Caramel Coloring22612Red 4021595Yellow 518987Carrageenan17853Blue 116643Yellow 613560Sucralose10490Ammonium Sulfate1697
Indexed products containing each flagged additive. Source: Open Food Facts ingredient lists × FDA SAFFA × CSPI Chemical Cuisine.
FDA Status
GRAS
Safety Score
3/5

Function

DOUGH STRENGTHENER, FIRMING AGENT, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, FLOUR TREATING AGENT, LEAVENING AGENT, MALTING OR FERMENTING AID, PROCESSING AID

Safety Assessment

Ammonium Sulfate has a moderate safety profile (3/5). While approved for use, some studies or consumer advocacy groups have raised questions about certain aspects of this ingredient. Consumers who prefer caution may wish to limit intake.

What the Data Says About Ammonium Sulfate

Ammonium Sulfate currently appears in 1,697 products across the OpenFoodFacts catalog we index, which gives a concrete measure of its footprint on US grocery shelves. Our internal safety score of 3/5 synthesizes FDA Substances Added to Food (SAFFA) regulatory status - currently "GRAS" - with the Center for Science in the Public Interest (CSPI) Chemical Cuisine classification. Regulators ask whether exposure at typical intake is acceptable, while consumer-advocacy groups like CSPI weigh cumulative dietary load and vulnerable-population risk -- two related but distinct questions.

In food manufacturing, Ammonium Sulfate functions as a dough strengthener, firming agent, flavor enhancer, flavoring agent or adjuvant, flour treating agent, leavening agent, malting or fermenting aid, processing aid. 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 Ammonium Sulfate 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 Ammonium Sulfate
Source Classification Year
FDA SAFFA GRAS 2024
CSPI Chemical Cuisine Not rated 2024
PlainFoodSafe Score 3/5 2026
Product footprint 1,697 products OpenFoodFacts

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

Frequently Asked Questions

Is Ammonium Sulfate safe to eat?

Ammonium Sulfate has a safety score of 3/5. FDA status: GRAS. Always check with a healthcare provider if you have specific dietary concerns.

What products contain Ammonium Sulfate?

Ammonium Sulfate is found in 1,697 products in our database, spanning various food categories and brands.

What does Ammonium Sulfate do in food?

Ammonium Sulfate is used as a dough strengthener, firming agent, flavor enhancer, flavoring agent or adjuvant, flour treating agent, leavening agent, malting or fermenting aid, processing aid 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.