(2,6'-Bibenzothiazole)-7-sulfonic acid, 2',2'''-(azodi-4,1-phenylene)bis(6-methyl-, barium salt (1:1) 68399-72-4 Barium 2',2'''-(azodi-4,1-phenylene)bis(6-methyl(2,6'-bibenzothiazole)-7-sulphonate) EINECS 269-983-3