Author: Subject: Hydrates of 5-Aminotetrazole, drying Hydrates of 5-Aminotetrazole, drying


Hi there

well its not energetic material yet
But I think I'll post it here....


Just made my first 5-ATZ synthesis and got some nice crystals.
I dryed them in the sun on a very hot day, the paper I spread it out on was absolutely dry after a few hours.

Do you think it is the monohydrate or are there other hydrate forms?

It would be nice to know with how many water molecules I have to do the calculations for further experiments...

[Edited on 25-7- by Gargamel]

@Gargamel, Yes it is always the monohydrate when it crystallizes from water. The monohydrate is quite stable and I never bother to dehydrate it. Providing you keep it cool and in a well capped jar it doesn't dehydrate significantly. You just have to remember to use the correct MW when formulation experiments, it doesn't need to be anhydrous.

If you need it dry for a pyrotechnical applications it can be dried in the oven at 100C. I am not sure if you can remove the water in a desiccator at room temperature.

By the way which method did you use and what sort of yield did you get?

[Edited on 26-7- by Boffis] AndersHoveland

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posted on 26-7- at 00:56

Something else to consider, if you did not do the reaction properly, you may more than likely have actually made Tetrazene.

If original aminoguanidine reactant is oxidized by nitrous acid in the presence of 5-aminotetrazole, Tetrazene will be formed.

So it could be possible your product contains a mixture of the two energetic compounds.




Hi,

I don't think there is any Tetrazene in there.
The product is absolutely insensitive to any stimulus, and decomposes upon heating without any flame ect.


Quote:
By the way which method did you use and what sort of yield did you get?

I used the method with HCl and sodium Hydroxide.
Starting from 54g aminoguanidine bicarbonate I got 21g after recrystallisation.

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