Direct Black 51
A cosmetic ingredient used as hair dyeing in skincare, haircare, and personal-care products sold in the European Union.
What is it?
Disodium 5-[[4-[(7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-1-naphthyl]azo]salicylate (CI 27720)
What does it do?
Direct Black 51 is listed in the EU cosmetic ingredient inventory with the following declared functions:
-
Hair dyeing
colours hair, either by depositing pigment on the surface or by chemically altering the hair's natural pigment
EU regulatory status
This ingredient is banned in the European Union.
Direct Black 51 is listed under Annex II of EU Cosmetics Regulation 1223/2009 (entry 1266), making it prohibited in cosmetic products placed on the EU market.
Frequently asked questions
What is Direct Black 51?
Direct Black 51 is a cosmetic ingredient catalogued in the EU CosIng database. Disodium 5-[[4-[(7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-1-naphthyl]azo]salicylate (CI 27720)
Is Direct Black 51 allowed in cosmetics in the EU?
No. Direct Black 51 is banned for use in cosmetic products in the EU under Annex II of Regulation 1223/2009.
What does Direct Black 51 do in cosmetic products?
Direct Black 51 is declared in the EU cosmetic ingredient inventory with these functions: hair dyeing.
What is the CAS number of Direct Black 51?
The CAS (Chemical Abstracts Service) number for Direct Black 51 is 3442-21-5.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 15/10/2010