Thallium azide, TlN3, is a yellow-brown crystalline solid poorly soluble in water. Although it is not nearly as sensitive to shock or friction as lead azide, it can easily be detonated by a flame or spark. It can be stored safely dry in a closed non-metallic container.
3D model (JSmol)
CompTox Dashboard (EPA)
|I4/mcm, No. 140|
|Occupational safety and health (OHS/OSH):|
|NFPA 704 (fire diamond)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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TlN3, KN3, RbN3, and CsN3 adopt the same structures. The azide is bound to eight cations in an eclipsed orientation. The cations are bound to eight terminal N centers.
All thallium compounds are poisonous and should be handled with care; avoid breathing any dust or fumes.