1,3-Naphthalenedisulfonic acid, 7,7'-(carbonylbis(imino(5-methoxy-2-methyl-4,1-phenylene)azo))bis-, lithium sodium salt 7,7'-(Carbonylbis(imino(5-methoxy-2-methyl-4,1-phenylene)azo))bis(1,3-naphthalenedisulfonic acid), sodium, lithium salt 7,7'-(Carbonylbis(imino(5-methoxy-2-methyl-p-phenylene)azo))bis(naphthalene-1,3-disulphonic) acid, lithium sodium salt 75198-97-9 EINECS 278-105-8