allura red ac molecule, food dye e129, molecular structure, 3d model van der waals

allura red ac e129 azo dye food 2naphthols molecule molecular structure chemical formula isolated model atom c18h14n2na2o8s2 dyes benzenesulfonates colorings naphthalenesulfonates enumber additives chemistry science compound large group of objects ingredient coloring cosmetic pharmaceutical health element shape beverage confectionery dairy product modification snack background baked goods additive calcium pigment