A synthetic disazo colorant listed in Annex IV and linked to an Annex II entry.
What it is
CI 27755 is a synthetic water-soluble colorant that CosIng classes chemically as a disazo colour, a sulfonated naphthalene dye. CosIng lists it as a colorant. In the EU it is listed in Annex IV (colorants), and the EU data also link it to an entry in Annex II (prohibited substances).
Where it is used
Found in a small number of products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
See the EU regulation section for the applicable conditions and for what the Annex II entry covers and how it applies.
Functions
- Colorant
- Exclusively or mainly intended to colour the cosmetic product, the body as a whole or certain parts thereof, by absorption or reflection of visible light; (precursors of oxidative hair colorants shall be deemed colorants). All authorised colorants are substances in the positive list of Annex IV to the Cosmetics Regulation 1223/2009.
EU regulation
EU · Annex IV, entry 52Tetrasodium 6-amino-4-hydroxy-3-[[7-sulphonato-4-[(4-sulphonatophenyl)azo]-1-naphthyl]azo]naphthalene-2,7-disulphonate
- As of
- 3 November 2026 · (EC) 2009/1223
EU · Annex II, entry 1354Tetrasodium 6-amino-4-hydroxy-3-[[7-sulphonato-4-[(4-sulphonatophenyl)azo]-1-naphthyl]azo]naphthalene-2,7-disulphonate (Food Black 2; CI 27755) when used as a substance in hair dye products
- As of
- 3 November 2026 · (EC) 2013/344