How sensitive is NG? - Archive File

[Anthony]

Detonator
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From:
Registered: NOV 2000
posted February 21, 2001 01:33 AM
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Alot of people say that AP is more sensitive than NG, but as i know (maybe i'm wrong) NG is more unstable and might explode from shaking it...


green beret
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Posts: 102
From: Australia
Registered: DEC 2000
posted February 21, 2001 08:06 AM
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I am not positive but I am quite certain that NG is more sensitive than AP. More difficult to handle too, because its a liqiud.


Anthony
Moderator
Posts: 2312
From: England
Registered: SEP 2000
posted February 21, 2001 09:54 AM
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Someone did some test recently between the two and the NG required some serious whacking with a hammer.
NG won't detonate by shaking it! There seems to be a lot of myth around the sensitivity of NG. Someone said that no one even knew it was an explosive originally, and they used to ship it around in pint glass bottles on the railway.

I know that some miners used to burn pots of NG on their helmets since it gave off better light that ordinary lamps. They also used NG to lubricate the axles on their railroad carts!!!

Mixed with a desensitizer, making dynamite, there is no way it is more sensitive than AP.

NG was used by the military, AP was not.


DarkAngel
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Posts: 591
From: ?
Registered: SEP 2000
posted February 21, 2001 10:05 AM
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I also heard alot of times old ppl in movies saying:"Ah my heard hurds i need my Nitro Glycerine pill`s"
What about that?

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--==DarkAngel==--

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Jhonbus
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posted February 21, 2001 10:15 AM
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Yeah, they used to ship it in pint glass bottles. They stopped doing this when a bottle that had been in the sun all day and got hot was dropped, and it exploded. I'm pretty sure AP is more sensitive, as Anthony said, NG was used by the military, but not AP.
NG is a vasodilatant. Headaches are caused by changes in blood flow to the scalp, for example if you are on holiday somewhere hot and sunny, if you dive under the sea you will sometimes get a headache because the cold water causes vasoconstriction --&gt; pain. Nitroglycerine would cure this headache. Conversely a headache may be caused by excess blood flow, that is why you get headaches if you spill NG on your skin.


Mr Cool
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Posts: 991
From: None of your bloody business!
Registered: DEC 2000
posted February 21, 2001 10:32 AM
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NG with a lot of acid in it is very sensitive, but AP is probably still worse.


PYRO500
Moderator
Posts: 1474
From: somewhere in florida
Registered: SEP 2000
posted February 21, 2001 11:34 AM
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anyone ever see the movie sorcerer? they have to transport old weathered dynamite in trucks and it is a true story and in real life all the trucks got destroyed from just driving on weathered roads and the guy got a single case of dynamite to the oil field on foot(cause his truck blew up)


vehemt
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Posts: 580
From: Canada
Registered: SEP 2000
posted February 21, 2001 12:31 PM
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AP is indeed much more sensitive and of course not stable at all. And NG served militaries for a very, very short period of time, being replaced by much better explosives. Nodern military "dynamites" are just plastiques packed into a tube.
[This message has been edited by vehemt (edited February 21, 2001).]


Mr Cool
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Posts: 991
From: None of your bloody business!
Registered: DEC 2000
posted February 21, 2001 03:43 PM
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But it is still widely used for civilian purposes and demolition, e.g. in gelamex.


Microtek
Frequent Poster
Posts: 194
From:
Registered: JAN 2001
posted February 22, 2001 04:00 AM
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Well, I use both AP and NG and I can tell you AP is MUCH more sensitive than NG.
Or maybe I should say NG is much less sensitive than AP: NG is not sensitive to a 35 cm drop from a 335 gram steel hammer when lying on a steel anvil.
If you are still a bit respectful of it then that is always a good thing. Anyway you can mix it with nitromethane, which will give you a much less sensitive and, up to a point, more powerful explosive ( 8.2% NM and 91.8% NG will give you an optimal oxygen balance ).

[PyroTech]

Has anyone ever tried this methode? I mean the NM NG explosive.
Because, if it really makes NG less sensitive, and give it more power it would be a pretty nice explosive. And could someone do the calculation, of the OB in a NG+NM based dynamite?

[vulture]

</font><blockquote><font size="1" face="Verdana, Arial, Helvetica">quote:</font><hr /><font size="2" face="Verdana, Arial, Helvetica"> 8.2% NM and 91.8% NG will give you an optimal oxygen balance </font><hr /></blockquote><font size="2" face="Verdana, Arial, Helvetica">Anyways, if that wasn't what you're looking for, here's the equation I balanced (please recount to check if it's OK!):

12C₃H₅(NO₃)₃ + 4 CH₃NO₂ ---&gt; 40CO₂ + 36H₂O + 20N₂

I leave the rest to you...

[NickSG]

Nitroglycerine will not even go off with a well made flash powder salutes on top of it.

[ALENGOSVIG1]

No you are incorrect, good flash will easily detonate NG. Infact, a few books mention that firecrackers can be used as detonators for NG. Which is true, i've tried it.

But keep in mind NG has different detonation rates, the harder its hit, the harder it hits back. :)

<small>[ March 27, 2003, 12:38 AM: Message edited by: ALENGOSVIG1 ]</small>

[andreas]

In fact our good friend Alfred Nobel experimented with wooden bp salutes to detonate NG. It worked but I think he wouldn't have the full detonation velocity.

[metafractal]

Going back to the nitroglycerin pills- I just have to tell you this story! Well, I can never walk past any bottle with small writing or warning labels on it, I just have to check for usefull chemicals-- and finally it payed off! I was staying at my grandparents house a few nights ago, and with it all out in the open and no one around, I decided to raid my grandpa's medication stash. Mostly useless carbonates and the like- but then: a half a dozen or so small bottles. Down the bottom the fine text read "Glycerin Trinitrite" <img border="0" title="" alt="[Eek!]" src="eek.gif" /> ! What a score! Thats one medical he WONT be taking! <img border="0" title="" alt="[Wink]" src="wink.gif" />
Anyway, I certianly dont think that pharmaseutical(?sp) sources for are by any means a viable source for NG, as they will sureley be outrageously priced. To put in perspective, a 2g bottle of KCl pills with fancy writing on it costs about $17, while a 2kg bag of KCl from the pool shop costs around $5! If I ever have high blood pressure, its water softener for me :D !
Nonetheless, its usefull to know.

[Anthony]

This got discussed before, many a moon ago... Basically, medical NG pills are a useless source of NG. Even in an entire bottle of pills you're going to have a miniscule amount of NG and it will require purification in order to make it detonatable.

In short, you robbed your poor old grandad for nothing. I wonder what it'd feel like if next week your hear he died from an attack of angina. You'd know he'd have went for his pills, whether they'd have saved him you don't know, but still...

[NickSG]

I never tried it, but I say a member site (I think it was). They had some nitroglycerine, and tried to detonate it with some kind of flash powder salute. They didnt say how much it had though.

[PyroTech]

Well, I know that Shockwave did some tests, with NG and a normal flash salute. He wanted the storageble primary(who doesn't:)).
And He wasn't able to detonate the NG, only a few times a particial detonation.

[ShockWave]

he's right

<a href="http://apanshock.tripod.com/FlashNG.htm" target="_blank">http://apanshock.tripod.com/FlashNG.htm</a>

[blindreeper]

Shockwave,

I may be wrong or talking outa my ass, but in the section were you detonated the NG on the metal pipe with not much damage. Wouldn't you think the pipe would have had more damage than that, if it was a full detonation?

[ShockWave]

if it was a full detonation ?

what makes you think it wasn't a full detonation ?

The Boom was very loud and I think it was a full detonation, the steel pipe was very strong and thick, but I will do it over again at the same place with some more AP.