9 replies to this topic

[dave]

hi all,

someone may be interested in this, a bit esoteric but who knows for the future.......

it is not new, but just came across a couple of links with info

http://pubs.acs.org/.../8626cover.html

http://angelfirepyro.com/

dave321

[CCH Concepts]

so to the chemists on the forum, anyone capable of synthesizing some of these nitrogen rich chems.

[Mumbles]

Sure, you can make them, but no one really uses them. It's all nitrocellulose or carefully tuned AP compositions. Maybe a little bit of those exotic things to speed up the burn. The other chemical you may want to look into if you're actually interested is guanidine nitrate. The military might use those things, but they don't for civilian fireworks.

The first way they made tetrazole was to pressurize hydrogen cyanide with hydrogen azide. Who wants to try it first?

Edited by Mumbles, 04 August 2010 - 10:43 PM.

[CCH Concepts]

Well that doesn't sound to easy or pleasant. Lol

[Arthur Brown]

You have to realise the target markets for fireworks! Domestic fireworks have to be cheap to sell to the general public, but they make smoke. General military pyro may me made to make smoke or to make little smoke but always costs a LOT more than fireworks. Top end research for space and special projects will be even more expensive but have even tighter specs which may include extremes of smoke reduction, which may necessitate special compound synthesis with the associated huge expense.

[crystal palace fireworks]

hi all,

someone may be interested in this, a bit esoteric but who knows for the future.......

it is not new, but just came across a couple of links with info

http://pubs.acs.org/.../8626cover.html

http://angelfirepyro.com/

dave321

I believe Angelfire supply much of the Disney corporation with its fireworks!, I think they also devised a compressed air system for launching shells.

Edited by crystal palace fireworks, 05 August 2010 - 07:14 AM.

[Creepin_pyro]

Sure, you can make them, but no one really uses them. It's all nitrocellulose or carefully tuned AP compositions. Maybe a little bit of those exotic things to speed up the burn. The other chemical you may want to look into if you're actually interested is guanidine nitrate. The military might use those things, but they don't for civilian fireworks.

The first way they made tetrazole was to pressurize hydrogen cyanide with hydrogen azide. Who wants to try it first?

Do you have any examples of NC-based star compositions? I've only ever seen NC as a binder or with Chlorides in flame projectors.

There are a few commercial fireworks I believe use NC systems - Kimbolton's 'jumping jellybeans' for example. I always wondered how they formulated the coloured microstars.

If we can make great colours with a NC system I'd be interested to try some out - cost isn't as much of an issue where amateur experimentation is concerned.

[CCH Concepts]

I'm assuming this isn't the same nc as we bind with, from what I have read there are various types with various nitrations, some are low or even high explosives in there own right.

[dave]

I believe Angelfire supply much of the Disney corporation with its fireworks!, I think they also devised a compressed air system for launching shells.

yes you are right, i also think they seem to be working in the area of low smoke indoor / theatrical pyro.
nitrocellulose is also mentioned.............i would guess they mean more than coloured flame projecors

dave321

[pyrotrev]

One substance I'd love to get hold of is hydrazinium nitroformate (HNF), which unusually for a hydrazine salt wih an oxidising anion is quite stable. It's a good oxidiser and makes rocket fuels that are being extensively investigated by the military at present. The difficult part in making it is getting hold of the nitroform - a common source is as a by-product of making TNT!