What does the restriction note for ETIDRONIC ACID mean?

The restriction field for ETIDRONIC ACID reads: III/53. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 2809-21-4?

CAS 2809-21-4 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

InventoryRef 3390015/10/2010

ETIDRONIC ACID

Q: How do I check if my formula contains ETIDRONIC ACID?

Use the INCI Checker tool on CosIng Checker to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

Phosphonic acid, (1-hydroxyethylidene)bis-

ETIDRONIC ACID is linked to 1 EU annex record on this page. Inventory note: III/53.

INCI Checker Search similar

Inventory details for ETIDRONIC ACID

INCI name

ETIDRONIC ACID

INN name

etidronic acid

Description

Phosphonic acid, (1-hydroxyethylidene)bis-

Annex records for ETIDRONIC ACID

Annex III Restriction reference

Entry 53

Etidronic acid

CAS: 2809-21-4

EC: 220-552-8

Key data

CAS

2809-21-4

220-552-8

Restriction

III/53

Function

CHELATING

How ETIDRONIC ACID appears in the CosIng inventory

The CosIng inventory lists ETIDRONIC ACID as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

ETIDRONIC ACID is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

ETIDRONIC ACID appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for ETIDRONIC ACID reads: "III/53". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, ETIDRONIC ACID carries the following function designation(s):

CHELATING

CAS 2809-21-4 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

View CAS records

Use the INCI Checker tool to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

Open INCI Checker

Source note for ETIDRONIC ACID

This page combines the CosIng inventory entry for ETIDRONIC ACID with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research ETIDRONIC ACID and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

View sources View updates

Tools & next steps

Check your formula

Scan a full INCI list to detect ETIDRONIC ACID and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to ETIDRONIC ACID, its identifiers or nearby name variants.