Orange GGN

Product Description

Name: Orange GGN
Synonyms: 1-(m-sulfophenylazo)-2-naphthol-6-sulfonic acid, disodium salt
Molecular Formula: C16H10N2Na2O7S2
CAS Registry Number: 2347-72-0
Orange GGN, also known as alpha-naphthol orange, is a food dye. In Europe it is denoted by the E Number E111. It is the disodium salt of 1-(m-sulfophenylazo)-2-naphthol-6-sulfonic acid. It is currently delisted in Europe and USA, because toxicological data has shown it is harmful.
The absorption spectrum of Orange GGN and Sunset Yellow is nearly identical in visible and ultraviolet range, but they can be distinguished by their IR spectra.
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