What does the restriction note for ACID YELLOW 73 mean?

The restriction field for ACID YELLOW 73 reads: II/1332 (when used as a substance in hair dye products). 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 2321-07-5?

CAS 2321-07-5 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 5416412/08/2020

ACID YELLOW 73

Q: How do I check if my formula contains ACID YELLOW 73?

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.

3',6''-Dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]Xanthen]-3-one (CI 45350:1); 2-(6-Hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoic acid

ACID YELLOW 73 is linked to 2 EU annex records on this page. Inventory note: II/1332 (when used as a substance in hair dye products).

INCI Checker Search similar

Inventory details for ACID YELLOW 73

INCI name

ACID YELLOW 73

Description

3',6''-Dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]Xanthen]-3-one (CI 45350:1); 2-(6-Hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoic acid

Annex records for ACID YELLOW 73

Annex II Restriction reference

Entry 1332

2-(6-Hydroxy-3-oxo-(3H)xanthen-9-yl)benzoic acid; Fluorescein and its disodium salt (Acid Yellow 73…

CAS: 2321-07-5 -- 518-47-8

EC: 219-031-8 -- 208-253-0

Annex IV Identified ingredient

Entry 74

CI 45350

CAS: 518-45-6; 518-47-8

EC: -; 208-253-0

Key data

CAS

2321-07-5

219-031-8

Restriction

II/1332 (when used as a substance in hair dye products)

Function

COLORANT HAIR DYEING

How ACID YELLOW 73 appears in the CosIng inventory

The CosIng inventory lists ACID YELLOW 73 as a cosmetic ingredient and this page links it to 2 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

ACID YELLOW 73 is also tagged with 2 cosmetic functions 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

ACID YELLOW 73 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 ACID YELLOW 73 reads: "II/1332 (when used as a substance in hair dye products)". 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, ACID YELLOW 73 carries the following function designation(s):

CAS 2321-07-5 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 ACID YELLOW 73

This page combines the CosIng inventory entry for ACID YELLOW 73 with 2 linked Annex II–VI records from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research ACID YELLOW 73 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 ACID YELLOW 73 and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to ACID YELLOW 73, its identifiers or nearby name variants.