2 replies to this topic

[neo]

Hi!

planning on buying some chems for new year, I would like to make some colors instead of golden tailed stuff =)
and I'm very interested in making colored flashes/reports, but it is very hard to find formulas!
but I found one.. a red one:
50 Sr(NO3)2
50 Mg
will this work since there is no chloride donor? how sensitive is this comp? will it be "safe" to store for a few days? (in the finished fireworks, will make 3/4" aerial salutes.)

and then I found this Lancaster star:
55 Sr(NO3)2
28 Mg
17 PVC
is this a good red star? (don't need to be a 1'st class star, just want it to burn red and not too fast)

the Mg I can get is less then 100 microns, which is around 140mesh..
one other question, would MgAl work instead of Mg? it is less then 63 microns, so that is less then 230 mesh..
why I ask is because it is more stable in storage and it is cheaper : )
thanks for all help!

[neo]

okey, I’ve searched a bit on the forum and found this:

Instead, you might want to try Strontium Nitrate finely divided and Magnalium, or 325 Mesh Mag, 65/35 will give you a really Brilliant Fed Flash. Barium Nitrate really finely divided and Magnalium or 325 mesh Mag, 70/30 will result in a nice green Flash, though not quite as nice as the red

here is the thread

so there is the answer to some of my questions. big thanks BurlHorse!! =)
and I spoke to a Swedish pyrotechnic, and he said that that star comp is good.

so the only question I have now is.. what binder should I use? red gum? how many percent?

[karlfoxman]

Search either on Google for 'pfp database' or check the forum some more. The answers are out there. Closed!