Orange GGN, also known as alpha-naphthol orange, was previously a food dye. It is the disodium salt of 1-(m-sulfophenylazo)-2-naphthol-6-sulfonic acid. In Europe it was previously denoted by the E Number E111 previously, but has been forbidden for use in foods since 1 January 1978 (EU directive 76/399/EEC). It has never been included in the food additives list of the Codex Alimentarius. As such it is presently forbidden for food use in general, because toxicological data has shown it is harmful.