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Ammonium Sulfite

Moderate concern

Ammonium sulfite is a sulfiting agent. Sulfites can trigger asthma and severe reactions in sensitive individuals; FDA requires labeling when sulfite levels exceed 10 ppm.

Found in

3 products

What it is

An inorganic ammonium salt of sulfurous acid; a sulfite preservative.

Antioxidant/preservative; releases sulfur dioxide.

Why it's flagged

sulfite sensitivity/asthma triggers
severe reactions in sulfite-sensitive individuals

What regulators actually say

"FDA requires the presence of sulfites in processed foods to be declared on the label when present at a level of 10 ppm or greater."

FDA - Sulfites: Food Additive Status — fda.gov

Regulatory status

United States — FDA

Permitted with labeling requirement when ≥10 ppm; banned on raw fruits/vegetables

European Union — EFSA

Authorized sulfite (E numbers E220-E228); ADI 0.7 mg/kg bw

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