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woelen
Super Administrator
Posts: 8012
Registered: 20-8-2005
Location: Netherlands
Member Is Offline
Mood: interested
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Sad that things have developed like that in the US. Over here we still can buy so-called KAS (80% ammonium nitrate, rest is chalk) in 25 kg bags. Very
easy to purify, simply dissolve in water, let the chalk settle, use that as fertilizer and evaporate the clear solution. With some more effort we also
can find 34-0-0 fertilizer.
Also very easy to obtain is so-called chili-saltpeter in 25 kg bags, which is 99+% NaNO3 with 0.1% added borate as trace element. This can be used as
such, together with BBQ-bricks and a small amount of Al-filings as a great and very bright piece of firework.
For some peculiar reason, KNO3 cannot be found anywhere in pure form, where I live. At least, I have never seen it being sold in farmer's places.
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unionised
International Hazard
Posts: 5126
Registered: 1-11-2003
Location: UK
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Mood: No Mood
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"NH4NO3 will not detonate from simple heating. I still don't understand why people think that it does. It will decompose long before it detonates"
I guess some people think it detonates because of things like this.
http://www.uneptie.org/pc/apell/disasters/toulouse/home.html
I can't say I blame them for thinking AN is prone to detonation given that it, err, detonates.
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12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
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Mood: informative
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A sufficiently large exotherm (tons, say) would tend to burn, deflegrate and finally explode, no? Not a high-yielding explosion of course, as AN is
prone to do (in many industrial AN explosions, much bulk material is thrown out of the blast, unexploded).
Tim
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DeAdFX
Hazard to Others
Posts: 339
Registered: 1-7-2005
Location: Brothel
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Mood: @%&$ing hardcore baby
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Just buy two bags of fertilizer. One containing Ammonium Ions and the other containing Nitrate ions. If you know a thing or two about chemistry you
will make sure that one of your products is an insoluble salt.
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garage chemist
chemical wizard
Posts: 1803
Registered: 16-8-2004
Location: Germany
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Bump!
I have a question regarding ammonium nitrate fertilizer that doesn really need its own thread.
I found a store in France called Weldom that carries lots of interesting things, e.g. all the NaClO3 I will need in a lifetime, and AN fertilizer that
is much purer than our 80% AN/20% chalk stuff (fertilizer containing more than 80% AN is banned in Germany).
This fertilizer calls itself ammonium nitrate on the bag, but lists the nitrogen content as 33,5%. Pure technical grade ammonium nitrate does however
have a N content of 34,5% as stated in Ullmann.
In Ullmann it is further said that AN fertilizer is manufactured to two specifications: one to 34,5% N and one to 33,5% N.
But it doesnt say what is added to the 33,5% stuff to reduce its N content like that!
By what I found out by googling, the 33,5% N AN contains some stabilizers to reduce the grain disintegration due to the phase transition at 32°C.
Can someone who has knowledge about AN fertilizers tell me what exactly those stabilizers are, and what exact AN content the 33,5%N fertilizer has?
[Edited on 28-9-2007 by garage chemist]
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