Product name:a-Naphthol Orange
CAS:523-44-4
Molecular Formula:C16H11N2NaO4S
Formula Weight:350.32
Description:
Specification:25g
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.