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hkparker
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Thank you to TheNaKLaB for another great contribution, ethanol poured into steel wool and touched by a 9V battery.
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"Nothing is too wonderful to be true if it be consistent with the laws of nature." -Michael Faraday
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Formatik
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I've read ammonium persulfate and sodium sulfide were supposed to ignite upon being mixed. I've tried it with the potassium salt instead. But mixing
K2S2O8 with sodium sulfide in small amounts caused no reaction. This mixture did not even produce any strong reaction when heated over a flame, with
KNO3 in the same instance, the sulfide melted then exploded under liberation of fire and sparks.
I gave boranes another try using a non-oxidizing acid. I used the same boride containing material mentioned earlier. I added this to aq. HCl and this
effervesced strongly, then I held flame over it but got not really any reaction (it seemed like there were traces of boranes, and there was a bad
odor). I did this several times with flame, but got no reaction.
There is a variation I've found to the KBrO3 and sugar mixture, where sucrose (manna also) burns with a quick white-blue flame, xylitol in mixture
with KBrO3 burned with a transparent and completely blue flame. I don't know if I'll be able to record this, but if another member has KBrO3, they can
do it. A drop of H2SO4 should also ignite it.
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hkparker
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Ok, its been about a month since I said about a month, so I'm ready to get started on the editing. If anyone has something they would like to add let
me know and ill wait, otherwise I'll start editing in one week.
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"Nothing is too wonderful to be true if it be consistent with the laws of nature." -Michael Faraday
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Hexavalent
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How can I contribute? I was thinking steel wool soaked in EtOH and sticking a battery's terminals onto the wool. If I film it can it go in?
"Success is going from failure to failure without loss of enthusiasm." Winston Churchill
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MrHomeScientist
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Apologies if this was already mentioned higher up.
PeriodicVideos just posted a new video today that I thought would be great for this project: Chromium trioxide and ethanol
http://www.youtube.com/watch?v=_HvYJQ5Bofk
If anyone has CrO3, this would be pretty neat to see. Wiki states it can be made from sodium dichromate and sulfuric acid. I have potassium
dichromate, which I'm sure will work just as well, so maybe I'll give making CrO3 a try. Feel free to go on editing your video though, I won't be able
to do it any time soon most likely. Eager to see the new collab!
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fledarmus
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This may have already been mentioned - I know organolithium reagents as a class have been, but I wanted to specifically mention t-butyl lithium,
usually sold as a 1.5M solution in pentane. This material is usually handled either by oven-dried glass syringes or by cannulla, and if you take a
small amount up in a syringe and spray it through the air, it will ignite as it leaves the needle. It is considerably more pyrophoric than the other
typical organolithium reagents such as methyllithium, phenyllithium, and n-butyllithium.
[Edited on 9-1-2012 by fledarmus]
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Hexavalent
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Can anyobdy therefore point me to a UK source for such reagents? I've got a few experiments I'd like to try that also use t-butyl lithium as they
specify a tertiary alcohol-based organolithium reagent.
"Success is going from failure to failure without loss of enthusiasm." Winston Churchill
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hkparker
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We have a video of an ethanol soaked steel wool being touched by a battery, but as always more footage doesn't hurt.
I don't remember seeing chromium oxide and ethanol, but that would make a cool demonstration! How soon do you think you could give it a try? It is
probably worth waiting for.
t-butyl lithium's flammability has really gotten some publicity as of late hasn't it? Be very careful if anyone tries this, but that too would be
interesting to demonstrate.
If you're looking for reagents use the search engine in Reagent and Apparatus Acquisition, UK sources have most likely been discussed there before.
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MrHomeScientist
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I'll be busy tonight and tomorrow, so this weekend is about the earliest I could try. It depends on how much success I have making the CrO3 from what
I have, never tried it before.
Using potassium dichromate and conc. sulfuric acid, the reaction should be
H2SO4 + K2Cr2O7 → 2CrO3 + K2SO4 + H2O
Looks like I can separate the products via solubility - CrO3 is more soluble, though solubilities of both compounds don't change much with
temperature. The best I could do would be pretty impure, using this method. According to wiki, solubilities in g/100ml of water:
__________CrO3______K2SO4
0 C________61.7______11.1
25 C_______63.0______12.0
100 C______67.0______24.0
Edit: Actually, there's mention of CrO3 being subject to hydrolysis when dissolved in water. Would this destroy my product? Any other separation
methods anyone can think of?
[Edited on 1-9-2012 by MrHomeScientist]
[Edited on 1-9-2012 by MrHomeScientist]
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Morgan
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A bit bulky, but a fire starter. I would use methanol though, the fuel/air ratio much more forgiving.
The electrophorus of S. Kamachi
http://www.ece.rochester.edu/~jones/demos/kamachi.html
Electrophorus
http://www.youtube.com/watch?v=0vbStOvfVGg&feature=relat...
[Edited on 11-1-2012 by Morgan]
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Formatik
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Quote: Originally posted by MrHomeScientist  | | Edit: Actually, there's mention of CrO3 being subject to hydrolysis when dissolved in water. Would this destroy my product? Any other separation
methods anyone can think of? |
Of course, wiki doesn't tell how to purify the trioxide from the H2SO4. The extraction is described by Mellor a bit (link may not be viewable to European servers). The chromium trioxide can be rinsed of H2SO4 using the
conc. nitric acid, this can make it more reactive owing to chromyl nitrate impurities.
Ethanol is not the must for the reaction, other alcohols work also. Ketones are also said to ignite more or less vigorously. Polar aprotic solvents
can react violently. Brake fluid might do something. CrO3 is more reactive after it has been crushed. Beware also of contamination with any organics
whatever container it is put into.
If you don't have glass wool, you should be able to use a piece of insulation that was boiled in excess Piranha's acid for some time to destroy
organics that were present. I've used this to filter nitrosyl pechlorate which is more violently reactive than CrO3.
There may be some parallels to reactivity to chromyl chloride which also ignites methanol or ethanol on contact, turpentine also. If pure, CrO3 is in
the long term much more storage stable, but the chloride isn't. Nasty carcinogens both of them.
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UnintentionalChaos
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I have a small quantity of CrO3 already and would be willing to try it out.
Department of Redundancy Department - Now with paperwork!
'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
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turd
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| Quote: | | CrO3 is more reactive after it has been crushed. |
Huh? Has anyone of you ever worked with CrO3? Do you
realize how hygroscopic that stuff is?
And yes, ethanol ignites in contact with CrO3 as anybody who wiped CrO3 spills with an ethanol soaked paper towel can tell you. Been there, done that,
don't see the point.
I wouldn't be surprised if it even works with K2CrO4.
[Edited on 14-1-2012 by turd]
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Formatik
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Crushed CrO3 is known to be more receptive towards a reaction with some materials. I'm not talking about crushing it and then letting it stand, but
right after it has been crushed. You can see CrO3 being crushed in the video above.
UnintentionalChaos, anything you want to try out with it would be good. If others are experimenting too it may be good to also use the other alcohols
or compounds and maybe try to avoid doing the same reaction.
I'm wondering if CrO3 and red fuming nitric acid form a stronger oxidant together, like KMnO4 and red fuming nitric acid which inflames alcohols and
turpentine. Chlorate and red fuming nitric acid also form a more violent oxidant, unstable, decomposing, transient species (maybe NO2+ClO3-) which
oxidizes alcohols utmost violently.
If I had any chromium (VI) compounds now I would have tried out some reactions with it, but I have really exposed myself to enough toxins, so that
chromyl chloride was the only Cr(6+) compound I've ever handled which I had to make from pottery-grade Cr2O3.
Useful to those who know German. Gmelin, Chrom(VI)oxid.
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Formatik
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Here is the KBrO3 and xylitol reaction ignited by H2SO4:
http://www.mediafire.com/?er8qw1bou113grc
The reaction looked different in smaller amounts, but here it looks similar the sugar mix. The mass ratio was 2:1 KBrO3 to xylitol.
The earlier mentioned ratio of KNO3 to sugar that was ignited by the PbO2 mix probably was not so important, since it seems nitrate was likely in
excess.
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hkparker
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Thanks for the video Formatik!
That would be awesome if you gave it a try UC, I think CrO3 would produce some great reactions with a variety of fuels.
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"Nothing is too wonderful to be true if it be consistent with the laws of nature." -Michael Faraday
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#maverick#
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http://www.youtube.com/watch?v=lvRIykdzBXU
kclo3 + hno3 oxidizing ethanol ^
http://www.youtube.com/watch?v=lIcZLer8Lv8
KMnO4 + HNO3 + ethanol
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hkparker
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Alright, I'm going to start the editing process now. The only video I might be waiting on is the CrO3 from UnintentionalChaos. Should I expect that
video in a couple of weeks? If so I'll wait but wannna wrap up any new submissions, otherwise I'll start now.
Thanks for the continued contributions everyone!
My YouTube Channel
"Nothing is too wonderful to be true if it be consistent with the laws of nature." -Michael Faraday
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Vikascoder
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The most oldest way alkaline metal + water
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Vikascoder
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Nitric acid + turpentine oil burst into flame . Nitric acid + charcoal also starts a fire
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Vikascoder
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What about chloric or perchloric reacting with organic materials
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UnintentionalChaos
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| Quote: Originally posted by hkparker | Alright, I'm going to start the editing process now. The only video I might be waiting on is the CrO3 from UnintentionalChaos. Should I expect that
video in a couple of weeks? If so I'll wait but wannna wrap up any new submissions, otherwise I'll start now.
Thanks for the continued contributions everyone! |
Sorry, I forgot! I'll get on that.
Department of Redundancy Department - Now with paperwork!
'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
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UnintentionalChaos
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Can't edit anymore...
Special Scimad preview of my contributions!
http://youtu.be/_I7C3PqIXyY
http://youtu.be/zHw-lgjfqAU
Department of Redundancy Department - Now with paperwork!
'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
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Formatik
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I didn't think anyone would do it but just mentioned it as an aside but I would not add to the project reaction of alcohol and acid chlorate mentioned
above, and I know it well and will say this since it is not an ignition reaction and there are too many noobs on YouTube for something so vigorous.
In all experiments, the amounts should be kept small in the milligram range away from any combustible surroundings to help prevent unwanted fires.
Especially important to keep it small with nitric acid plus permanganate and a fuel.
I speak from good experience in saying to keep the amounts small and the igniting material away from nearby combustibles. This is what I like in UC's
videos, the controlled nature in which he carried out the experiments. Nothing nearby can readily catch fire.
Too violent for the making fire idea.
Not in small amounts, here is the reaction of red fuming nitric acid (d= 1.48) with turpentine with the latter being dumped into the acid: http://www.mediafire.com/?58e5z3f84zz24h8
As we can see it spatters vigorously and sprays and ejects and gives off gas, but it does not ignite. Permanganate makes the difference as mentioned
on page 11. Repost of working link to turpentine + nitric acid and permanganate reaction.
Turpentine flames burn with very visible orange flames and black smoke and so it's easy to tell no ignition occurred.
[Edited on 13-2-2012 by Formatik]
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UnintentionalChaos
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*taps foot impatiently* c'mon hkparker. 
Department of Redundancy Department - Now with paperwork!
'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
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