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Author: Subject: Strike anywhere matches from safety matches
moonclub
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[*] posted on 20-8-2006 at 02:02
Strike anywhere matches from safety matches


Few mounts ago I have made some strike anywhere matches from safety matches - NaClO3 + P (red) and little water. I can ignite it anywhere (glass, wood, paper, skin), but they are not safe. Falling from 10 sm on glass cause ignition. 0,005g composition per one match.



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Deceitful_Frank
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[*] posted on 20-8-2006 at 09:15


and?
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YT2095
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[*] posted on 20-8-2006 at 09:20


I think that`s IT.
(s)he`s sharing this "Idea" with us.




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moonclub
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[*] posted on 20-8-2006 at 10:45


That "Idea" is not so bad. Natrium chlorate is better than KClO3, but matches must be in a dry and cool place. They are too sensitive to be really useful, but I like it.



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agent_entropy
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[*] posted on 20-8-2006 at 20:06


You might try using perchlorate instead of chlorate, it will probably be a lot safer as perchlorates tend to be much more stable than chlorates.
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12AX7
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[*] posted on 20-8-2006 at 20:21


But then, you don't really get the "strike anywhere" reaction. :(

Tim




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moonclub
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[*] posted on 20-8-2006 at 21:59


The red P, mixed with any usual oxidiser is too sensitive. It's harder, to dissolve KClO3 or KClO4, than NaClO3. NaClO3 contains more O, but is more hygroscopic.



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YT2095
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[*] posted on 21-8-2006 at 00:33


a little bit safer method would be the one outlined here: http://www.popsci.com/popsci/how20/7308716ca54f8010vgnvcm100...

for the outside coating, you may use NC laquer instead, it also gives them a more water resistant quality.




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[*] posted on 21-8-2006 at 04:01


Just see the video - striking match on my own hand.

http://moonclub.by.ru/Clip(5).3gp




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YT2095
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[*] posted on 21-8-2006 at 04:36


ya ne vidu spichka, gde eto?


В руку, где... А внешне практически не отличается от обычную.

Het, izvinitye: 404. Документ не найден.

mozhet ploho link?

I Tozhe, ya ne (vsem ne) govorit(esh) mnogo po russki :)


[Edited on 21-8-2006 by YT2095]


http://moonclub.by.ru/ - там находится файл Clip(5).3gp - чтоб открыть нужен quick time player или другой.

spasibo, eto robata :)
no, ya vidu ne s 3gp?

kakoy .3gp?



PLEASE CONTINUE THIS BY U2U!!

[Edited on 21-8-2006 by chemoleo]




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moonclub
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[*] posted on 21-8-2006 at 06:07


Use quick time player to open the file.



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YT2095
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[*] posted on 21-8-2006 at 06:26


good point Chemoleo, sorry each.

I don`t have Quicktime player, and so cannot see this. but I must say that lighting a match on your hand is Crazy! esp homemade sorts and with such a volatile/unpredictable mixture.
in 100, 99 may work fine and them one will hurt you :(




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[*] posted on 21-8-2006 at 09:03


0,005г is not so much :)



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YT2095
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[*] posted on 21-8-2006 at 10:15


still, it is not a risk I would wish to take (I have Pain allergies).

IIRC, Phosphorus sesquisulphide is used in the stike anywhere types nowadays, although where you get this or even make this I don`t know.
I`m assuming it`s a little more stable as a compound than the raw RP and Chlorate with binder mixture though.

I`ve had plenty of sucess with home made matches in the past and in different flame colors similar to bengal matches, you may wish to try these also :)




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[*] posted on 21-8-2006 at 16:13


Neat. I will have to try this.
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[*] posted on 22-8-2006 at 19:05


Alternatively, one could imbue matchsticks with a soluble metalic salt (copper cloride?) for colouring effects.:P



F. de Lalande and M. Prud'homme showed that a mixture of boric oxide and sodium chloride is decomposed in a stream of dry air or oxygen at a red heat with the evolution of chlorine.
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[*] posted on 22-8-2006 at 21:44


You will need a chlorine donor + replacement of oxidizer. Sodium Chlorate will dilute any sort of blue/green color from the copper.
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[*] posted on 22-8-2006 at 22:12


Quote:
Originally posted by DeAdFX
You will need a chlorine donor + replacement of oxidizer. Sodium Chlorate will dilute any sort of blue/green color from the copper.


Bit of powdered PVC would sort that out though.
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[*] posted on 22-8-2006 at 23:28


Sort out sodium yellow???

That seems unlikely...

Works fine with KClO3 though, the coloring.

Tim




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[*] posted on 23-8-2006 at 17:02


I remember one of my friends trying the popsci-article method to make arrow heads. I'm going to assume that since he has all his limbs he hasn't gotten around to firing them at anything yet...
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[*] posted on 24-8-2006 at 04:33


Quote:
Originally posted by 12AX7
Sort out sodium yellow???

That seems unlikely...

Works fine with KClO3 though, the coloring.

Tim


Hehe, even the smallest presence of Na+ will make pure blue or green impossible indeed. I finally got some ammoniumperchlorate today, for making some blue light comps, but I was very disappointed to see that it burned with a slight yellow flame in the flame test. :( (Is this normal?!)


Btw, if you think KClO3 + red P is too sensitive you can also replace half of the red P by sulpher, like is used in toycap compositions. Always use enough water though, I found that pure KClO3 + red P can explode from friction even with a decent amount of water present! So a "little" water aint going to do it...;)
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[*] posted on 25-8-2006 at 00:06


I do the sulpher mix also, the RP has to be in the smallest amounts possible, or put on the outside later as a seperate coating entirely, and even then you only need to do the very Tip of the match.

I am curious as to a technicality though, does KClO3 and RP mix actualy Detonate, or just burn very quickly?




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[*] posted on 7-11-2006 at 12:47


Quote:
Originally posted by YT2095
I do the sulpher mix also, the RP has to be in the smallest amounts possible, or put on the outside later as a seperate coating entirely, and even then you only need to do the very Tip of the match.

I am curious as to a technicality though, does KClO3 and RP mix actualy Detonate, or just burn very quickly?


This has been the subject of considerable discussion in pyro circles for years. May depend on howthe word "detonation" is defined. It definitely explodes in very small quantities.

In any case this is very hazardous stuff because of its extreme sensitivity. Look up "Armstrong's Mixture" and "Union Torpedoes" in other forums. I don't have the exact citation at hand, but you might find Charles Nelson's patent from ca 1880 of interest -- see USPTO web site. Many people were killed and injured manufacturing and transporting these toys way back when.
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[*] posted on 7-11-2006 at 19:51


I am not sure, but i remember reading somewere that adding sulpher to ANY red P mix actually increases sensitivity.
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[*] posted on 8-11-2006 at 08:26


"somewhere"? :)

Sulfur and red P are used together in many toycap compositions. I tried a couple of them and found that using only a small percentage of red P reduces sensitivity somewhat. Mixtures of sulfur and chlorate alone need a rather strong hamerblow, whereas using 5:1 sulfur/red P needs something bigger than a small tap and using red P alone as a fuel will make it very susceptable to even the smallest taps with a spoon...
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