Guanidine nitrate is used to make nitrogen gas to rapidly do what?

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Guanidine nitrate is used to make nitrogen gas to rapidly do what?

The first new player to comment on the website with the correct answer wins a free drink at their next iQ Trivia quiz.
Since Guano is a component of some fertilizers, I say it breaks down to a fertilzer.
No it’s not fertiliser, it makes nitrogen very quickly to inflate something.