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Author: Subject: Short question / quick answer - Thread
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[*] posted on 31-1-2014 at 16:06


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)



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Metacelsus
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[*] posted on 31-1-2014 at 16:20


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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[*] posted on 1-2-2014 at 16:06


Alright thank you, Ill just wait for the hot summer of Dubai and then leave it outside then :D

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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[*] posted on 1-2-2014 at 16:39


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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[*] posted on 5-2-2014 at 11:24


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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[*] posted on 5-2-2014 at 13:52


I wouldn't touch any mixture with Red Phosphorous in it.



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DubaiAmateurRocketry
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[*] posted on 12-2-2014 at 11:37


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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[*] posted on 15-2-2014 at 13:08


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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[*] posted on 15-2-2014 at 13:21


That sounds like a reasonable reaction, check the solubility rules, potassium persulfate should precipitate from the solution.
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[*] posted on 15-2-2014 at 13:26


what i don´t understand is why i can´t find anyone else mentioning this reaction.??
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[*] posted on 15-2-2014 at 17:58


Looks like any other salt ionic exchange reaction whatever the word for that is.
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[*] posted on 16-2-2014 at 17:35


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



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Zyklon-A
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[*] posted on 16-2-2014 at 17:51


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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[*] posted on 16-2-2014 at 18:08


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.




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[*] posted on 16-2-2014 at 19:08


Thanks for answering my question, silly as it apparently was.;)
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[*] posted on 16-2-2014 at 19:32


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. :D
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[*] posted on 17-2-2014 at 04:09
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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[*] posted on 17-2-2014 at 06:05


@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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[*] posted on 17-2-2014 at 11:38


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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[*] posted on 17-2-2014 at 11:58


Banned, due to extensive use in methamphetamine manufacture.
Curious - what is your intended use, then?




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[*] posted on 17-2-2014 at 12:15


Motherloads "wizard balls" got me interested in making them :D

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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[*] posted on 17-2-2014 at 12:35


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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[*] posted on 17-2-2014 at 12:50


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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[*] posted on 17-2-2014 at 15:59


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.




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[*] posted on 17-2-2014 at 16:08


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.



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