Amaranth comprises of trisodium 2-hydroxy-1-(4-sulfonato-1-naphthylazo) naphthalene-3,6-disulfonate with support of subsidiary coloring matter. Further, it is combined with sodium sulfate/sodium as principal uncolored component. The organic compounds other than coloring matters it contains include 4-aminonaphthalene-1-sulfonic acid/3-hydroxynaphthalene-2,7-disulfonic acid; 7-hydroxynaphthalene-1,3-disulfonic acid; 6-hydroxynaphthalene-2-sulfonic acid and 7- hydroxynaphthalene-1,3-6-trisulfonic acid which in combination are not more than 0.5%.