Syonyms Name: C.I. 18735; C.I. Mordant Red 19 (VAN); C.I. Mordant Red 19 monosodium salt; C.I. Mordant Red 19, monosodium salt (8CI); Mordant red 19; C.I. Mordant Red 19; Mordant Red 19 (C.I.); sodium 3-(5-hydroxy-3-methyl-1-phenylpyrazol-4-ylazo)-5-chloro-2-hydroxyben