Syonyms Name: C.I. 13250; C.I. Mordant Brown 33 (VAN); C.I. Mordant Brown 33, monosodium salt (8CI); C.I. Mordant Brown 33; Mordant Brown 33 (C.I.); sodium 2,4-diamino-5-(2-hydroxy-5-nitrophenylazo)benzenesulphonate; Mordant Brown 33 (13250); Acid Mordant Brown RH; sod