chemistry

Tetrazene explosive

Tetrazene explosive is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tetrazene explosive rather than just read about it. In short: Tetrazene (1-(5-tetrazolyl)-3-guanyl tetrazene hydrate) is an explosive material used for sensitization of priming compositions. It is a derivative of the compound with the IUPAC name tetrazene.

Key takeaways

Tetrazene explosive belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Tetrazene explosive to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tetrazene explosive from memory before moving on to harder problems.

Reference excerpt

Tetrazene (1-(5-tetrazolyl)-3-guanyl tetrazene hydrate) is an explosive material used for sensitization of priming compositions. It is a derivative of the compound with the IUPAC name tetrazene. Tetrazene is slightly more impact-sensitive than mercury fulminate. When pressed enough, its sensitivity is reduced or destroyed; this is known as dead pressing. It also decomposes in boiling water. In contact with fire, it readily explodes, producing large amounts of black smoke. It is prepared by reacting sodium nitrite with an aminoguanidine salt dissolved in acetic acid at 30–40 °C. Commercially, tetrazene is added in a small proportions to increase the sensitivity of lead styphnate in cap compositions used both in centre-fire (eg shotgun cartridges) and rim-fire (eg 0.22" ammunition) applications. Cap compositions also contain a high proportion of barium nitrate as an oxidising agent, and scintillating compounds such as antimony disulphide or ground glass which cause the heat of the explosion when struck by the firearm firing pin to rapidly dissipate the main charge of either nitrocellulose or cordite.

Reactions

Decomposition The decomposition of tetrazene is quite rapid around 90 °C. A sample of tetrazene was heated in an oven at 90 °C and its rate of thermal decomposition was monitored by infrared and ultraviolet spectroscopy. The thermal decomposition reaction is autocatalytic and it is likely that the same reaction can occur at even lower temperatures, however at much slower rates.

Sensitivity to friction Many explosives are considered to be highly sensitive to mechanical stimuli such as impact, friction, stab, heat, static electricity, flame, etc. Since explosive compounds are subject to friction practically every time they are handled, it is of particular interest to be aware of the sensitivity to friction. The sensitivity of tetrazene was determined using a FSKM-PEx friction sensitivity tester. The probability of ignition of tetrazene is 100 percent likely at 27N of frictional force.

Hazards Instances of occupational rhinitis, dermatitis, and asthma have been reported due to prolonged exposure to tetrazene.

References

Illustrations

Worked examples

Example 1 — a first encounter with Tetrazene explosive

Start with the simplest possible case. Write down what Tetrazene explosive claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tetrazene explosive before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tetrazene explosive ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tetrazene explosive

In research: Tetrazene explosive appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Tetrazene explosive in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Tetrazene explosive is common in secondary-school and first-year university syllabi. It links to neighbouring topics Azo compounds, Explosive chemicals, Nitrogen compounds, so understanding it makes those chapters shorter.
In everyday life: Look for Tetrazene explosive outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Tetrazene explosive in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tetrazene explosive means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Tetrazene explosive out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tetrazene explosive in simple terms?

Tetrazene (1-(5-tetrazolyl)-3-guanyl tetrazene hydrate) is an explosive material used for sensitization of priming compositions. It is a derivative of the compound with the IUPAC name tetrazene.

Why does Tetrazene explosive matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tetrazene explosive?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tetrazene explosive.