Like other thallium compounds, it is extremely toxic, with an oral median lethal dose of 21 mg/kg in mice.
lˈaɪk ˈʌðɚ θˈæliəm kˈɑːmpaʊndz, ɪɾ ɪz ɛkstɹˈiːmli tˈɑːksɪk, wɪð ɐn ˈoːɹəl mˈiːdiːən lˈiːθəl dˈoʊs ʌv twˈɛnti wˈʌn ˌɛmdʒˈiː slˈæʃ kˌeɪdʒˈiː ɪn mˈaɪs.