θˈæliəm ˈeɪzaɪd kæn biː pɹɪpˈɛɹd tɹˈiːɾɪŋ ɐn ˈeɪkwɪəs səlˈuːʃən ʌv θˈæliəm aɪ sˈʌlfeɪt wɪð sˈoʊdiəm ˈeɪzaɪd.
Thallium azide can be prepared treating an aqueous solution of thallium(I) sulfate with sodium azide.