dipotassium 3-[[5-(tert-butyl)-2-hydroxyphenyl]azo]-2-hydroxy-5-nitrobenzenesulphonate;Chrome Brown LE;Mordant Brown 19;Benzenesulfonic acid, 3-[[5-(1,1-dimethylethyl)-2-hydroxyphenyl]azo]-2-hydroxy-5-nitro-, dipotassium salt;3-[(5-tert-Butyl-2-hydroxyph