6 replies to this topic

[Creepin_pyro]

In my search for exotic star formulas, I've come accross some chemicals which I've never heard of before.

Guanidine Nitrate & TetramethylAmmonium Nitrate (sp?) I've also heard that it is possible to replace the Guanidine Nitrate with Hexamine. I've asked around, and cant find anyone who's heard of these chemicals. Has anyone heard of them being used in pyrotechnics? Also, any experiences with Devarda's alloy, and atomised copper, or copper/Aluminium alloys in stars would be appreciated.

[paul]

Guanidine nitrate can be synthesized from ammonium nitrate and urea. Both very common chemicals. I have the whole synthesis as a text, but it is in german, so if anyone got an english version of the synthesis.....

In case of need i could translate it to understandable english

It was used in "low smoke"-powders in the second world war and can be uses as an explosive as it is. So i don?t know if i can give more information about that stuff here!

Edited by paul, 17 August 2004 - 06:33 PM.

[chim-chim]

As a general rule, if an ingredient used in an older formula isn't used much anymore, I figure there's probably a reason , legal if nothing else.

I'm curious as well,
but remember to take additional precautions and extra care (i.e.-lots of research, which is what you're starting now I guess) working with archaic formulas.

Edited by chim-chim, 17 August 2004 - 08:34 PM.

[Creepin_pyro]

PURPLE (Clive Jennings-White)
55 Ammonium perchlorate
5 Strontium nitrate
28 Tetramethylammonium nitrate
12 Copper (atomized, - 100 mesh)

blue strobe FALLING LEAVES (Eric McCaskie)
57,5 Guanidine nitrate
22,5 Ammonium perchlorate
7,5 Copper metal (80-150 mesh)
5,0 CuO (3 ?m)
7,5 PVC (emulsion grade)

Interesting formulas - both using copper metal. They don't look too old to me, and I've been looking for a decent use for my atomised copper. Just those damn strange Nitrates in my way .... Having great trouble finding anyone who has worked with similair formula. Perhaps I will try substituting the Guanidine for Hexamine in a tiny batch...

[Patrick]

Guanidine nitrate

http://www.chemicall.....E NITRATE.htm

Seems expensive http://www.labdepoti...~pid~G1026.aspx

Tetramethylammonium nitrate

http://www.labdepoti...~pid~T2248.aspx

Edited by Patrick, 19 August 2004 - 04:12 AM.

[neo]

well that stuff Tetramethylammonium nitrate was really cheap!
man, I have never herd of chems like that! i even can't pronounce it!

[bogsulphur]

with most nitrates, the other ion determines the reactivity of the compound, which is why NaNO3 is less reactive than KNO3 - K is higher than Na in the electrochemical series. the other ion also explains the colour produced, for example, many KNO3 - oxidised reactions have a pink/purple flame. this would probably mean that all your oddly named chemicals may produce some weird, odd colours, depending on the chemicals in the other ion.