Red 2G is a synthetic red azo dye. It is soluble in water and slightly soluble in glycerol. It usually comes as a disodium salt of 8-acetamido-1-hydroxy-2-phenylazonaphthalene-3,6 disulfonate. Wikipedia Formula: C18H13N3Na2O8S2 Molar mass: 509.43 g/mol Solubility: 1 g/ 100 mL glycerol; Negligible in ethanol
