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Canonical INCI monograph

ETIDRONIC ACID

Not on the EU Annex III list

Etidronic Acid is the organic diphosphonic acid that conforms to the formula

ETIDRONIC ACID is listed in the European Commission CosIng inventory under the functional category Chelating, with CAS number 2809-21-4 and EC number 220-552-8. CosIng records a restriction against it (III/53), so check the corresponding Annex entry before formulating. In the free INCIDB sample it appears on 1 product label, reaching position 31 on Kératine Color 4.6 Châtain Chocolat.

CAS REGISTRY NUMBER
2809-21-4
EC NUMBER
220-552-8
COSING FUNCTIONS
Chelating
COSING RESTRICTION
III/53

Sample products containing ETIDRONIC ACID

Label positions from the free INCIDB sample. A lower position means the ingredient is declared earlier, i.e. present in a higher proportion.

PRODUCT LABEL POSITION
Kératine Color 4.6 Châtain Chocolat #31

Query ETIDRONIC ACID in the full snapshot

import pyarrow.parquet as pq

ingredients = pq.read_table('ingredients.parquet').to_pandas()
target = ingredients[ingredients['inci_name'] == "ETIDRONIC ACID"]
print(target[['ingredient_id', 'functions', 'cas_number', 'is_common_allergen']])

The complete snapshot covers 18,583 products. Coverage of each enrichment column is published, both per distinct name and weighted by label occurrence — see the coverage table.

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