Coke Zero
Coca-Cola
Vegan, unclearGluten-Free, passesKeto, passes
E331 — Sodium citrates
Why it’s used
Sodium citrates are the sodium salts of citric acid, used as acidity regulators and buffering agents to control pH, and as sequestrants that bind trace metal ions to improve stability. Common in processed cheese (as an emulsifying salt), soft drinks, gelatin desserts, and quick-set jams.
Other names
Trisodium citrate, Disodium citrate, Monosodium citrate, Sodium citrate, Citric acid, sodium salt
Diet flags
Vegan, passesVegetarian, passes
Regulatory status
USA — Allowed
Affirmed GRAS as a direct food substance under 21 CFR 184.1751, permitted at levels consistent with good manufacturing practice with no other quantitative limit. Source (2026-07-23)
EU — Allowed
Authorised EU-wide under Regulation (EC) No 1333/2008, Annex II, at quantum satis (no numeric maximum) for most food categories, with specific lower limits set only for foods for infants and young children. Source (2026-07-23)
Found in these products
4 products in our database contain E331.
Zero Ultra
Monster Energy
Vegan, unclearGluten-Free, passesKeto, passes
Soda Lemon-Lime
Sprite
Vegan, unclearGluten-Free, passesKeto, fails
Mountain Dew
Mountain Dew
Vegan, unclearGluten-Free, passesKeto, fails