Synonyms: 1,10-Phenanthroline, 2,9-dimethyl-4,7-diphenyl-, disulfo deriv., disodium salt;Bathocuproine disulfonic acid, disodium salt;Bathocuproine disulfonate ,disodium salt;BATHOCUPROIN SULFONATE HYDRATE;BATHOCUPROINE DISULPHONIC ACID DISODIUM SALT GR;