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Silver azide

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Silver azide is a special chemical compound. It is a salt made of silver and hydrazoic acid. This substance forms colorless crystals. Scientists call it a primary explosive. This means it can go off very easily. It is a very important thing to study.

Silver-azide-high-T-single-layer-3D-balls
Silver-azide-high-T-single-layer-3D-balls

Making silver azide is a specific way of working. First, you take a silver nitrate solution in water. Then, you treat it with sodium azide. The silver azide forms as a white solid. This solid falls out of the liquid. The liquid left behind is sodium nitrate.

Silver-azide-high-T-layer-stacking-3D-balls
Silver-azide-high-T-layer-stacking-3D-balls

We can look at how the tiny parts fit together. X-ray crystallography shows its unique shape. It is a coordination polymer. This means it has a repeating structure. The silver atoms are joined by four azide ligands. These ligands form flat, square shapes. The structure has two-dimensional layers. These layers stack one on top of the other.

Silver-azide-high-T-Ag-coordination-3D-balls-A
Silver-azide-high-T-Ag-coordination-3D-balls-A

There are many facts about how it reacts. Pure silver azide explodes at 340 °C. Other bits in the mix can lower this to 270 °C. When it explodes, it releases nitrogen gas. This happens in a big way. The reaction makes free electrons and azide radicals. Adding semiconducting oxides can make the reaction faster.

Silver-azide-high-T-N-coordination-3D-balls-B
Silver-azide-high-T-N-coordination-3D-balls-B

This substance can be very dangerous to handle. A hard hit can trigger it. Even ultraviolet light can make it explode. People must be very careful with it. If there is a spill, experts use ceric ammonium nitrate. This is an oxidising agent. It helps to destroy the silver azide safely.

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File:Silver-azide-high-T-layer-stacking-3D-balls.png
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File:Silver-azide-high-T-Ag-coordination-3D-balls-A.png
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File:Silver-azide-high-T-N-coordination-3D-balls-B.png
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