ACID YELLOW 73 SODIUM SALT

Banned in specific cases CAS: 518-47-8CosIng #31639

ACID YELLOW 73 SODIUM SALT must not be used as a substance in hair dye products in the EU — Annex II, entry 1332 of Regulation (EC) No 1223/2009. The prohibition is limited to that use; the entry is quoted in full below.

Regulatory data checked on 2026-09-05. The legal status follows Regulation (EC) No 1223/2009 and its annexes; the substance is identified from the European Commission's CosIng database.

About the ingredient

Disodium 2-(3-oxo-6-oxidoxanthen-9-yl)benzoate (CI 45350)

EU regulatory status

Annex of Regulation (EC) No 1223/2009: II/1332

Regulatory note: (when used as a substance in hair dye products)

2-(6-Hydroxy-3-oxo-(3H)xanthen-9-yl)benzoic acid; Fluorescein and its disodium salt (Acid Yellow 73 sodium salt; CI 45350), when used as a substance in hair dye products

Source: the European Commission's official CosIng database and Regulation (EC) No 1223/2009 of the European Parliament and of the Council on cosmetic products. How we assess ingredients — full methodology.

Last updated:

Functions in cosmetics

Frequently asked questions

  • Is ACID YELLOW 73 SODIUM SALT safe in cosmetics?

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  • In which annex of Regulation 1223/2009 does ACID YELLOW 73 SODIUM SALT fall?

    ACID YELLOW 73 SODIUM SALT falls under reference II/1332 in the annexes of Regulation (EC) No 1223/2009 on cosmetic products. An annex entry may name a substance directly or cover it as part of a broader category. The first part (Roman numeral) indicates the annex: II – prohibited substances, III – substances restricted by conditions, IV – permitted colorants, V – permitted preservatives, VI – permitted UV filters.

  • What functions does ACID YELLOW 73 SODIUM SALT perform in cosmetics?

    According to the European Commission's CosIng database, ACID YELLOW 73 SODIUM SALT performs the following functions in cosmetics: HAIR DYEING. Functions are defined in the CosIng glossary and describe the technological role of a substance in the finished product.

  • Are there Safety Gate alerts concerning ACID YELLOW 73 SODIUM SALT?

    Our copy of the EU Safety Gate database currently contains no alerts linking ACID YELLOW 73 SODIUM SALT to a cosmetic recall. The database is refreshed regularly from the European Commission's official Safety Gate system.

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