1-Hydroxyethylidene-1,1-Diphosphonic Acid
Etidronic acid, a phosphonate chelating agent that binds trace metals.
No policy
No HigherBar policy on this ingredient.
Approved in 3 of 7 tracked registries, no published record in 4.
1-Hydroxyethylidene-1,1-diphosphonic acid, also called etidronic acid or HEDP, is a phosphonate compound that binds (chelates) metal ions like calcium and iron. Food processors use small amounts to prevent metal-catalyzed discoloration and off-flavors, and it has separate, better-known medical use in treating bone disorders.
What each registry publishes about 1-hydroxyethylidene-1,1-diphosphonic acid.
Every row comes from a published regulator source, linked so you can read it yourself. "Prohibited" means a regulator has affirmatively banned it; "not authorized" means it has never been cleared for that use there. The two are not the same thing, so we never collapse them.
Approved in 3 of 7 tracked registries, no published record in 4. Last verified Oct 1, 2026.
| Registry | Status | Published record |
|---|---|---|
| United States (FDA) | Approvedfood additive | Technical effect: BOILER WATER ADDITIVE |
| European Union (EFSA) | No published data | Our sources hold no evidenced record here. That is not a clearance and not a ban. |
| United Kingdom (FSA) | No published data | Our sources hold no evidenced record here. That is not a clearance and not a ban. |
| Codex Alimentarius (JECFA) | Approvedfood additive | |
| Japan (CAA) | Approvedfood additive | |
| Australia & New Zealand (FSANZ) | No published data | Our sources hold no evidenced record here. That is not a clearance and not a ban. |
| Canada (Health Canada) | No published data | Our sources hold no evidenced record here. That is not a clearance and not a ban. |
We publish only evidenced regulatory rows, each with its source. Coverage is uneven across registries, and a missing row is reported as missing.
Check a whole label, not just one ingredient.
Paste a product's full ingredient list and get this same record for every ingredient we can identify, plus an honest "not recognized" for the rest.