boris_73 Posted December 1, 2004 Author Share Posted December 1, 2004 i have found a chemical which skylighter will ship to england and that chemical is the one which i want Bismuth Trioxide it cost about $21 for 1 pound so about £11 but its the only place that i have found which will sell it Link to comment Share on other sites More sharing options...
Gilded Posted December 1, 2004 Share Posted December 1, 2004 Bismuth trioxide seems to be quite unpopular in pyro, except for the dragon egg thing. :/ Link to comment Share on other sites More sharing options...
ffsjoe Posted December 19, 2004 Share Posted December 19, 2004 Does anyone know the ratio for the iron oxide, aluminium and sulphur thermite? I remember reading it somewhere I thought it was here but I've searched all over and can't find it. Link to comment Share on other sites More sharing options...
budullewraagh Posted December 19, 2004 Share Posted December 19, 2004 eh, that would make a flash powder more than a thermite. remove the sulfur and you have a thermite mixture. by the way, all, who here has tried any exotic thermites? Link to comment Share on other sites More sharing options...
ffsjoe Posted December 19, 2004 Share Posted December 19, 2004 The purpose of the sulphur is to hold the mixture together so the rust doesn't separate from the aluminium. You heat gently it so the sulphur melts and holds its all together. Thats what i remember reading, but i can't find it, hmm maybe i dreamt it up Link to comment Share on other sites More sharing options...
budullewraagh Posted December 19, 2004 Share Posted December 19, 2004 yeah but the sulfur will oxidize rapidly and it will act as more of a flash powder Link to comment Share on other sites More sharing options...
Lance Posted December 19, 2004 Share Posted December 19, 2004 why not just use plaster of paris? Link to comment Share on other sites More sharing options...
Silencer Posted December 19, 2004 Share Posted December 19, 2004 I found some chromium oxide powder in my basement... i think it is used by hardcore knife sharpeners. Would this make a good thermite? What is it's formula likely to be? Also, wouldn't getting pure chromium be pretty sweet? Link to comment Share on other sites More sharing options...
budullewraagh Posted December 19, 2004 Share Posted December 19, 2004 it would make a thermite, that is for sure. i believe it is Cr2O3 chromium has several oxides: CrO2, CrO3, Cr2O3 and, Cr3O4, namely best reactions for isolation of chromium would be Cr2O3 + 2Al --> 2Cr + Al2O3 2Cr2O3 + 3Si --> 4Cr + 3SiO2 speaking of chromium... http://www.webelements.com/webelements/elements/media/moov/volcano.mov the above video is bloody amazing. change the tag to .mpg if you dont have quicktime Link to comment Share on other sites More sharing options...
budullewraagh Posted December 19, 2004 Share Posted December 19, 2004 i should add that chromium and its salts are carcinogens Link to comment Share on other sites More sharing options...
YT2095 Posted December 19, 2004 Share Posted December 19, 2004 The purpose of the sulphur is to hold the mixture together so the rust doesn't separate from the aluminium. You heat gently it so the sulphur melts and holds its all together. Thats what i remember reading' date=' but i can't find it, hmm maybe i dreamt it up[/quote'] the purpose of Sulpher in many Pyro compounds is to only lower the Activation energy (Heat). Link to comment Share on other sites More sharing options...
Silencer Posted December 19, 2004 Share Posted December 19, 2004 i should add that chromium and its salts are carcinogens oh great! Thanks for the info though. Link to comment Share on other sites More sharing options...
budullewraagh Posted December 19, 2004 Share Posted December 19, 2004 yeah, well...depending on how you deal with it you may not expose yourself to dangerous conditions Link to comment Share on other sites More sharing options...
Silencer Posted December 19, 2004 Share Posted December 19, 2004 OMG! That thing was ridiculous! It looked like some monster was going to crawl out of the powder. Why were those tentacle things formed?! Link to comment Share on other sites More sharing options...
YT2095 Posted December 19, 2004 Share Posted December 19, 2004 you weren`t using Mercury based compounds were you? in the form of "Pharoes Snakes"? or however you spell an Egyptian king/ruler type person? Fair oh? Link to comment Share on other sites More sharing options...
Silencer Posted December 19, 2004 Share Posted December 19, 2004 It's Pharaoh, but what are you talking about? I didn't do anything, I was just talking about the video bud posted. Link to comment Share on other sites More sharing options...
budullewraagh Posted December 19, 2004 Share Posted December 19, 2004 and i dont take credit. if you watch it it says "copyright university of sheffield". yt, it's a video of the reaction of a paste made by mercuric thiocyanate and ammonium dichromate Link to comment Share on other sites More sharing options...
YT2095 Posted December 19, 2004 Share Posted December 19, 2004 got ya! thought as much and no I didn`t see the vid, the description was enough for me ) Link to comment Share on other sites More sharing options...
jdurg Posted December 19, 2004 Share Posted December 19, 2004 i should add that chromium and its salts are carcinogens There should be a 'suspected' carcinogen. It hasn't been conclusively proven. In fact, the human body requires a moderate amount of the chromium ion in order to help metabolise sugars. So I wouldn't go eating it by the barrel full, but there is absolutely no need to get yourself into a hazmat suit just to work with some Cr ions. Link to comment Share on other sites More sharing options...
Gilded Posted December 19, 2004 Share Posted December 19, 2004 "i should add that chromium and its salts are carcinogens" Wasn't that the case in Erin Brockovich? Link to comment Share on other sites More sharing options...
jdurg Posted December 20, 2004 Share Posted December 20, 2004 I thought that was plutonium? (Only heard about the real thing, not the movie). Link to comment Share on other sites More sharing options...
Silencer Posted December 20, 2004 Share Posted December 20, 2004 Chromium-6 (hexavalent chromium) Link to comment Share on other sites More sharing options...
TWJian Posted December 20, 2004 Share Posted December 20, 2004 I once tried a 65/35 mixture(by weight of ferric oxide and aluminium before.I used labortary grade chemicals.Owing to a lack of a digital scale,Iused a triple beam 1 instead.I filled it in a flimsy, wide cardboard case( i don't want an explosion),stuck a sparkler inside with some Mg shavings for good measure,then placed it in a sandbox.The mixture ignited with a brilliant flame(i had to turn my eyes away even though i was wearing sunglasses).Sparks flew out.A residue of iron and aluminium oxide,together with some molten silica and ashes was left in the sandbox(surrounded by sand).Btw.I mixed the powder by putting it inside a bottle and shaking it for 15 minutes. Link to comment Share on other sites More sharing options...
TWJian Posted December 21, 2004 Share Posted December 21, 2004 the purpose of Sulpher in many Pyro compounds is to only lower the Activation energy (Heat). Not nesscary that only.The oxidation of sulphur also acts as an energy source,thereby reducing the external heat needed to activate thermite compound indirectly.(the activation energy remains the same) Link to comment Share on other sites More sharing options...
Kindria2000 Posted December 21, 2004 Share Posted December 21, 2004 OMG I love thermite!!! My friends and I are kinda obsessed with the stuff, bu its so much fun! Link to comment Share on other sites More sharing options...
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