Eriochromazurol B, Eriochrome azurol 6B free form, Ci mordant blue 1,free acid, Chromazurol B, Pontachrom Azurblau, 2'',6''-dichloro-3,3'-dimethyl-4-hydroxyfuchson-5,5'-dicarboxylic acid, 2'',6''-dichloro-3,3'-dimethyl-4-hydroxyfuchsone-5,5'-dicarboxylic acid, Einecs 239-098-7