Regulatory data is for reference only. Always verify with the official regulator before making formulation decisions. Last refreshed: 7/12/2026.
Ingredients/(1-Hydroxyethylidene)diphosphonic acid and its salts
(1-Hydroxyethylidene)diphosphonic acid and its saltsCAS 2809-21-4
EU CosIng Annex III — restricted
Regulatory status
| Source | Status | Annex / Details | Limit / Conditions | Last updated |
|---|---|---|---|---|
| EU CosIng | restricted | Annex III | (a) 1.5% (as etidronic acid) (b) 0.2% (as etidronic acid) | — |
What this means
(1-Hydroxyethylidene)diphosphonic acid and its salts has regulatory signals in EU CosIng. Review the source links above for the official conditions and latest updates.
Common questions
- Is (1-Hydroxyethylidene)diphosphonic acid and its salts restricted in EU cosmetics?
- (1-Hydroxyethylidene)diphosphonic acid and its salts is restricted in EU cosmetics under Annex III with a maximum concentration of (a) 1.5% (as etidronic acid) (b) 0.2% (as etidronic acid).
- What is the CAS number for (1-Hydroxyethylidene)diphosphonic acid and its salts?
- The CAS number for (1-Hydroxyethylidene)diphosphonic acid and its salts is 2809-21-4.
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