Amaranth is a monoazo dye that occurs as reddish-brown to dark reddish-brown powder or granules. It is principally the trisodium salt of 3-hydroxy-4-(4-sulfonato-1-naphthylazo)-2,7-naphthalenedisulfonate and subsidiary coloring matters together with sodium chloride and/or sodium sulfate as the principal uncolored components. It may be converted to the corresponding aluminum lake. Amaranth can be used to color a […]