E501 — Potassium carbonates
E501 (Potassium carbonates), a acidity regulator, is rated "watch": fine in moderation. The potassium versions of the carbonate family. Used in cocoa processing, gingerbread, and as a lower-sodium baking agent.
What is Potassium carbonates?
The potassium analogue of sodium carbonate. Used to alkalise cocoa (giving Dutch-process chocolate its dark color and mild flavor), in some traditional gingerbreads, and as a lower-sodium raising agent.
What does it do to the body?
Stomach acid neutralises it instantly to potassium and carbon dioxide. Provides potassium your body uses normally. People with kidney disease who must restrict potassium should be aware.
What regulators say
EFSA and the FDA both treat it as a safe additive with no numerical acceptable daily intake.
Risk rating: Watch
Mixed evidence or a specific concern (gut, allergy, or contested safety data). Not alarming, but worth keeping an eye on rather than eating without limit.