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prometheus1970
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ANNM/ detonation
I read that the following mixture produces one helluva powerful charge:
1000 grams nh4no3
Nitromethane 185 grams
Methanol 84 grams
Can anyone tell me if this is a valid composition? Would 2 grams tatp with 3-4 grams nitrocelluose booster be sufficient to initiate said
composition?
Just because you're paranoid doesn't mean everybody isn't out to get you.
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hissingnoise
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Leaving out the MeOH and increasing the quantity of NM should increase sensitivity and improve OB . . .
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holmes1880
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Actually, MeOH is very oxygen negative, but it is a desensitizer. Surprisingly, this is right off the activation of ammonium nitrate patent. Methanol
based on quick math is 349.5% OB negative. (39.3)% for nitromethane and 20% for AN. At the end this ends up being a very positive mix (+33%)and it
shows it during detonation. 3 detonations I've seen, NO2 was present every time in a nice little brown cloud. Power.....can't say because I didn't use
any plates and anything over 500g sounds like a thunder hitting next to you.
BTW, what are you playing around with TATP for? AP and HMTD have terrible properties like no other primary 0.01K.........lead azide and silver
acetylide which any adult with 2 hands and half a brain can make will go a long way.
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medx
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I tried mixture of NM/AN. Their ratios were 28.5%/ 71.5% respectively. Its power was high as TNT. But it has a big drawback. Since volatility of NM
mixture losses its power in a few days.
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holmes1880
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medex,
Elaborate on where you got the idea than the "mixture loses its power in a few days". If it is airtight? I really doubt that, but please explain.
On a different note, did you find a minimal time for NM to sensitize ammonium nitrate. I read references of as short as 3-5 minutes for NM to even
absorb into the grains of AN.
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prometheus1970
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As for tatp, I use it primarily because it's the only primary synth I know well/ it's so easy, obtainable. I know it's really nasty, but I figured
(perhaps incorrectly) that if I keep my batches <5 grams and don't press it, I'd be okay. I've been considering synthing silver acetylide, but
don't have the apparatus yet. Funny you should say"two hands and half a brain", I'm doing just fine in the brains department, but only have the use
of one hand (not related to pyro activities at all)
[Edited on 12-20-2010 by prometheus1970]
Just because you're paranoid doesn't mean everybody isn't out to get you.
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prometheus1970
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I had only planned to use 1/10 of the amounts in the above composition. I have some property where I could get by with a very loud gunshot sized
bang, but if it sounds like above ground nuclear testing, the local authorities may take an interest.
Just because you're paranoid doesn't mean everybody isn't out to get you.
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prometheus1970
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BTW, what are you playing around with TATP for? AP and HMTD have terrible properties like no other primary 0.01K.........lead azide and silver
acetylide which any adult with 2 hands and half a brain can make will go a long way.
[/rquote]
Another thing I like about ap is that those little crystals look like they could be much smaller. I have about 300 grams I can't wait to put in my
coffee grinder in order to maximize surface area/burn rate (sic)
Just because you're paranoid doesn't mean everybody isn't out to get you.
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holmes1880
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Pressing peroxides isn't a great idea, but can be done if moist and with proper tool(not fingers). Still, making SA is not hard and ingredients can be
easily attained. Don't cheat yourself of safety. Pressing is done not to make things more dangerous and thrilling, but to attain higher detonation
pressure:
Pd = detonation pressure (MPa)
ρ = explosive density (kg/m3e)
D = detonation velocity (km/s)
Pd = ρ X D^2 / 4
Always more reliable to use a small cap that is pressed, than a bigger cap with lose mix. Just have a safe procedure for pressing caps....shield, ear
muffs, goggles, never come in contact with cap directly, etc... Sorry to hear about you missing one arm, though, how the heck do you get your arm
missing. You must have been doing something stupid...
[Edited on 20-12-2010 by holmes1880]
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medx
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Quote: Originally posted by holmes1880  | medex,
Elaborate on where you got the idea than the "mixture loses its power in a few days". If it is airtight? I really doubt that, but please explain.
On a different note, did you find a minimal time for NM to sensitize ammonium nitrate. I read references of as short as 3-5 minutes for NM to even
absorb into the grains of AN. |
holmess, for details, i prepared my mixture. after one hour i exploded half of it. it was very powerful. i stored remained mixture in a plastic
container. its mouth was closed but was not airtight. it was stayed at about 27- 33C six or seven days. after that i exploded it like first. it
was explode but its power was very low.
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holmes1880
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Well, so not airtight. That explains it the drop of power, AN will suck up water even if the container is apparently closed well.
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hiperion42
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If you knew how many times you possibly came close
to loosing something you wouldn't say such a thing.
And he didn't implicitly say he was missing anything.
[Edited on 20-12-2010 by hiperion42]
.....ejuu....................................................................Ffg..............................g.............
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prometheus1970
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Thanks hiperion, I just sent holmes a u2u explaining that all my parts are intact, but due tosome neurological issues, they don't all function as they
should.
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quicksilver
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| Quote: Originally posted by prometheus1970 | I read that the following mixture produces one helluva powerful charge:
1000 grams nh4no3
Nitromethane 185 grams
Methanol 84 grams
Can anyone tell me if this is a valid composition? Would 2 grams tatp with 3-4 grams nitrocelluose booster be sufficient to initiate said
composition? |
Check out Hurst's vast backlog of materiel. He held the patent for KinPak & KinStik (I believe he still does). Nitromethane is extremely
interesting in that it evaporates so quickly that a level of material in a container that is not fully sealed will evaporate very quickly - what's
more nitromethane is also hygroscopic! So in addition to looses due to evaporation; you'll fine water in the material.......
That's the exact reason for the binary containers. The nitromethane is in a sealed polymer envelope. The Ammonium nitrate is also in a sealed
container. The containers are made to actually fit together and seal again.
Kinestik was also produced with a sensitized formula of powdered Al (it's 10% of total weight of mixed product).
The most materil will be Hurst's two patents and the new-groups dialogs on KinePak. Google:
News groups, "alt.engineering.explosives", Hurst
-=-=-
You'll get the real nuts and bolts from there.
No booster needed: never had been. Material had been over driven via SSS detonator (documented in patent) and few issues were altered.
[Edited on 20-12-2010 by quicksilver]
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prometheus1970
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Thanks! I'll look into that.
Just because you're paranoid doesn't mean everybody isn't out to get you.
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holmes1880
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| Quote: Originally posted by hiperion42 |
If you knew how many times you possibly came close
to loosing something you wouldn't say such a thing.
[Edited on 20-12-2010 by hiperion42] |
That's why most people in the world are walking around crippled and missing limbs/body functions. NOT.
Go away troll.
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prometheus1970
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Lead azide, ag2c2 syntheses
Speaking of ag2c2 and lead azide, I've seen many videos of the ag2c2 synthesis, but they were not annotated with amounts, ratios, etc. I have yet to
find a direct syntesis of lead azide, they all involve making sodium azide and reacting that to get lead azide is this the only way, or is there
another, more direct approach?
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holmes1880
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http://www.powerlabs.org/chemlabs/acetylide.htm
Silver acetylide synthesis, as plain as it gets. All ingredients I can purchase right now over the internet, not a problem. Silver nitrate is rather
pricy, but you're not making any big amounts with it.
Lead azide is also rather simple synthesis, but I didn't look too much into. Try Ag2C2, since there's more info on it.
[Edited on 21-12-2010 by holmes1880]
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prometheus1970
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Found the ag2C2 info I needed, but I'm still not finding a direct route to pb(n3)2, lead azide
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prometheus1970
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I've found that Ionly need a gram or so of agno3 per batch, but still not sure what the yield is, so getting the silve nitrate, not a big problem, nor
the apparatus, since I can bubble aceylene gas through agno3 aqueous solution rather than a nitric acid solution (my tubing is vinyl, which might not
withstand the acid)
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holmes1880
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I didn't find any info on yields(but can find out from reliable sources). Keep in mind that 1g of Ag2c2 should give you at least 3-5 cap tests. Here's
another method for you if you're short on money
http://www.jackerypyro.com/silver_acetylide.htm
First synthesis, don't make more than 250mg and just focus on testing its properties: friction, impact, and spark.
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franklyn
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The formula as presented does not indicate an answer consistent with
what is implied , that this expresses the detonation front pressure.
Unless " e " as shown ( the base of natural logarithm ) figures somehow.
Assuming values for calculation shown below here at the right
(MPa) = detonation pressure
ρ = density of explosive (m/V) . . .1.6
D = detonation velocity (km/s). . . 6
MPa = (ρ D ²) / 4 . . . (1.6 x 6 ²) / 4 = 14.4
one atmosphere is equal to 100,000 pascals , 14,400,000 / 100,000 = 144 atm
144 x 14.7 p.s.i. = 2117 , a ton per square inch , about that inside a tank of compressed gas.
detonation of an explosive produces 1000 times as much pressure.
typically 10's to 100's of kilobars (1000 atmospheres)
_____________________________
It should be obvious also that this cannot apply generally
to all explosives since the density of lead azide is triple
that of other primary explosives with similar velocity of
detonation and have comparable performance.
.
[Edited on 22-12-2010 by franklyn]
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prometheus1970
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I just noticed that my "status" was changed from "harmless" to "hazard to self" I can't help but wonder if this is because of my lack of knowledge,
yet continued interest in energetics or the assumption Holmes 1880 made about my'missing' arm it doesn't really matter, I suppose, I'm just idly
curious...
Just because you're paranoid doesn't mean everybody isn't out to get you.
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prometheus1970
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I found a super easy synth for lead azide and sources for the necessary reagents (NaN3, PbN3)
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franklyn
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See first page here _
Explosive Evaluation of Coordination Compounds
http://www.anl.gov/PCS/acsfuel/preprint%20archive/Files/07_3...
P = 0.01 ρ _D ²
. . . . . . . . . . . 4
where :
. . . . . . . . .P = detonation pressure in bars
. . . . . . . . .ρ = density
. . . . . . . . .D = detonation velocity , m / s
Using identical values as before :
ρ = 1.6
D = 6000
144000 = _0.01 x 1.6 x 36,000,000_
. . . . . . . . . . . . . . . . . . . . 4
.
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