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underground
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Quote: Originally posted by DubaiAmateurRocketry  |
How to I obtain ammonium nitrate form a solution ? I have around 100ml of water dissolving around 5 gram of AN and it did not precipitate even when I
put it in my fridge(around 5 degree C) |
Use a Desiccator Bag
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Metacelsus
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That is a relatively dilute solution. I recommend boiling it down first, then cooling it. From Wikipedia, its solubility at 0 C is 118 g per 100 g
water.
From personal experience, boiling down ammonium nitrate solutions is difficult. They transition directly to molten ammonium nitrate, and it is
difficult to tell when this occurs. Decomposition is a problem (basement filled with dense white smoke ). I recommend not boiling all of the water off.
[Edited on 1-2-2014 by Cheddite Cheese]
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DubaiAmateurRocketry
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Alright thank you, Ill just wait for the hot summer of Dubai and then leave it outside then 
I wonder if hydroxylammonium-5-amino-tetrazolate, [NH3OH]+ [CN5H2]- or dihydroxylammonium nitriminotetrazolate [(NH3OH)2]2+ [CN6O2]2- exist or ever
synthesized.
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Turner
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You don't need to wait for your AN. Boil the solution down slowly, I don't know how dilute it is although. Once you notice slight white smoke coming
from it that smells a little different (not steam). And then pour this liquid while hot onto a tray. You will notice long crystals begin to form as
the solution cools, this is AN, but in order to evaporate all of the water, gently and carefully heat, you may use an oven if you have to but don't
get it too hot, this wouldn't be so dangerous. You will end up with dry, white ammonium nitrate in a granular form.
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Peroksit
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Did anybody hear a mixture of AN/Red Phosphorus ? I seen a patent which about the mixture. Red phosphorus is for increase its sensivity for weak
blasting caps. This mixture will be stable or safe ?
[Edited on 5-2-2014 by Peroksit]
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Motherload
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I wouldn't touch any mixture with Red Phosphorous in it.
"Chance favours the prepared mind"
"Fuck It !! We'll do it live !!"
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DubaiAmateurRocketry
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Does anyone have or can find a full guide on the synthesis of Diethylene glycol dinitrate (DEGDN)? An experimental part in a paper is also good.
I just can not find its actuall synthesis be stated in a paper except on some websites that Ive been told to contain false information.
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Omnipresent75
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I saw a demonstration online, where potassium persulfate was made by following procedure:
45,6 G of ammonium persulpfate dissolved in 100 ml of water
30 G of potassium chloride dissolved in 100 ml of water
Mix the solutions, cool it in fridge, filter crystals out and rinse them with water
Said to yield 54 G K2S2O8, and a leftover solution of Ammonium Chloride.
I scoured the WWW for more info on this proces, and found none. Which is why i hope someone here will enlighten me, as i´m out of options.
Is it a Hoax?
Thanks!
[Edited on 15-2-2014 by Omnipresent75]
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DubaiAmateurRocketry
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That sounds like a reasonable reaction, check the solubility rules, potassium persulfate should precipitate from the solution.
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Omnipresent75
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what i don´t understand is why i can´t find anyone else mentioning this reaction.??
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Turner
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Looks like any other salt ionic exchange reaction whatever the word for that is.
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PeeWee2000
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I thought almost all alkali metal and ammonium compounds were very soluble or did my AP Chem teacher steer me wrong? I think the words you might be
looking for are Salt Metathesis Reaction or Double Displacement Reaction. You probably cant find it because specific simple reactions like this aren't
highly discussed. You might read this for more info on the reaction http://en.wikipedia.org/wiki/Double_displacement_reaction
“Everything is relative in this world, where change alone endures.”
― Leon Trotsky
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Zyklon-A
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I don't know why you asked this in the EM Short question / quick answer - Thread.
But no not all group 1 salts are very soluble, although many are, for instance sulfates, which are rarely soluble.
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DraconicAcid
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| Quote: Originally posted by PeeWee2000 | | I thought almost all alkali metal and ammonium compounds were very soluble or did my AP Chem teacher steer me wrong? |
The key word being "almost". There are a few alkali metal compounds with low solubility (KClO3 and K2PtCl4 come to
mind). If you're working with concentrated enough solutions, you can precipitate out compounds that are fairly soluble, as long as the reactants are
more soluble.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Omnipresent75
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Thanks for answering my question, silly as it apparently was.
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roXefeller
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Zyklonb, I love the diversity of elements and compounds you have listed...
Latest acquired element(s): Lithium, Gold and Cadmium.
Next element(s) to acquire: Sodium, potassium.
Latest acquired compound(s): Sodium Hydroxide, Acetone.
You just never expect to see group I alkali metals alongside hardware store lye and acetone. Then gold and cadmium thrown in to round it out.
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underground
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The amount of primary-booster needed
Cause i do not want to open a new topic for only a short question, that i want to ask is:
The amount of primary-booster that is going to detonate an amount of secondary explosive like ANNMAL or ANFO always is going to be the same ? or it
must be increased as the secondary explosive increases ?
For example, 3gr of ETN and 500mg of HMTD can easily detonate an amount of 300gr of ANNMAL - ANFO. Now if the ammount of ANNMAL - ANFO changed to
300kgr, the 3gr of ETN and 500mg of HMTD would be enough ?
[Edited on 17-2-2014 by underground]
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Zyklon-A
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@roXefeller, Haha, yeah, well I haven't been trying to get elements in any order.... Also I don't have much budget to go just for a collection, all my
chemistry budget goes into buying useful chemicals (like Sodium Hydroxide, Acetone) and equipment, not something that will sit on a shelf and never be
used.
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goldenoranges
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Quick Question: Is Red Phosphorus banned in the USA? I can't find it on Ebay, Amazon, or United Nuclear.
Is there a synthesis tutorial on this site?
I know if it isn't banned, it is probably watched, as it is one of the ingredients for a few nerve agents and drugs. (just to clarify, that is not
what I want it for)
[Edited on 17-2-2014 by goldenoranges]
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elementcollector1
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Banned, due to extensive use in methamphetamine manufacture.
Curious - what is your intended use, then?
Elements Collected:52/87
Latest Acquired: Cl
Next in Line: Nd
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goldenoranges
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Motherloads "wizard balls" got me interested in making them
http://www.sciencemadness.org/talk/viewthread.php?tid=28972#...
I saw when I tried searching for a synthesis you can make it out of urine? I am not sure if the person was being serious or joking. I also see some
websites offering it, but it seems sort of fishy...
http://www.hottdealss.com/Red%20phosphorus.html
I am searching for a synthesis in the ullmann's encyclopedia of industrial chemistry, which is a great resource for information on chemistry.
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roXefeller
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You should be looking at this thread. https://www.sciencemadness.org/whisper/viewthread.php?tid=65
I believe the urine thing did happen some time ago. You'll see that phosphorus sources are common, reduction to elemental isn't so. And from talking
to the ironworkers in Idaho who worked in the molten phophorus plants, rather 'exciting'.
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goldenoranges
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hmm yeah, it is harder than I originally thought it would be to get a hold of it. Thanks for that link though, it is an interesting way of getting
calcium sulfate!
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Motherload
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Goldenoranges .... Don't make those "Wizzard Balls" they sound cool but they are dangerous.
I have burnt my self badly with them. That's why I won't touch any mixtures of RP with oxidizers.
If you think AP is sensitive .... Variants of Armstrongs mixes are waaay worse.
"Chance favours the prepared mind"
"Fuck It !! We'll do it live !!"
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goldenoranges
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Oh, ok. I thought it would be like the old strike anywhere matches in a ping pong ball, but faster, but never mind if its that dangerous, and
expensive for the RP. Druggies are really pissing me off, they get all the chemicals banned and hard to get/expensive.
Knowledge is the Ultimate Power.
PGP Key is in Bio
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