megalomania
June 21st, 2003, 12:47 PM
the_wingman
Frequent Poster
Posts: 49
From:
Registered: JAN 2001
posted 07-05-2001 04:46 PM
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Hi guys
In a topic I've read about a low explosive containing 75% KClO3, 12.5% C, 12.5% S.
Is this really the best composition? I think 65:20:15 works much better. Does sb know the "optimal" percentages of these ingredients (means that the fuel is completely oxidated by the KClO3)?
Which do you think is the best low explosive that contains a chlorate or nitrate but no metal powder?
kingspaz
Frequent Poster
Posts: 360
From: UK
Registered: SEP 2000
posted 07-05-2001 05:00 PM
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well for me 80% KClO3 and 20% charcoal works fine. it burns and leaves nothing left over so i guess it must be fairly well balanced.
Mr Cool
Frequent Poster
Posts: 1013
From: None of your bloody business!
Registered: DEC 2000
posted 07-05-2001 05:44 PM
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I use 73:27 when using KClO3/C mixtures, in grains about 1mm in diameter. It's VERY good.
kingspaz
Frequent Poster
Posts: 360
From: UK
Registered: SEP 2000
posted 07-05-2001 05:54 PM
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i think its superior to ordinary black powder made with KNO3 because it is easier to achieve a fast burn rate and it is also much more moisture resistant. i use it for everything because of the ease of making KClO3. i only use the KNO3 BP for fuses because of the solutbility of KNO3 in water and slower burn rate.
ALENGOSVIG1
Moderator
Posts: 782
From: Canada
Registered: NOV 2000
posted 07-05-2001 05:55 PM
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KClO3 and ascorbic acid works better than H3 in my opinion. KNO3/Ascorbic acid (C6H8O6) Grained works Very nicely. 46 g ascorbic acid, 78 g kno3 and 2 grams dextrin works well.
J
Moderator
Posts: 635
From: United Kingdom
Registered: SEP 2000
posted 07-05-2001 06:22 PM
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The ideal amount of Charcoal in any mixture is next to impossible to determine, due to the differences between the materials used to make it. Variables like cooking time also have an effect on the number of volatiles present. Getting the amounts slightly off won't matter because of this, whether you're making BP or H3. The PFP database has many formulae for BP, with a wide variation in Charcoal content.
J
PHILOU Zrealone
Frequent Poster
Posts: 479
From: Brussels,Belgium,Europe
Registered: SEP 2000
posted 07-23-2001 08:05 AM
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I found that composition in books a long time ago and was surpise it to be the same as black powder. 75 KClO3/12.5 C/12.5 S this mix was used in mines due to its high brisance.
It is wise to mix 1-2% CaCO3 to reduce risks of spontaneous ignition by residual traces of H2SO4 in the S.
Beware of this mix it is really very very powerful with an iron pipe 4cm diameter 35cm long with 0.5cm thickness walls (powder unpressed) set by a fuse (pipe with or without cap)don't expect to find metal pieces bigger than this space [-] except for the end cap ( a lot of KILLING schrapnells).
By calculations of optimum mixes of KClO3/S and KClO3/C you find this formula back
try it (I don't have my medeliev table so I can't do it)
2KClO3 + 3S--> 2KCl + 3SO2 -> x g KClO3/1g S
2KCLO3 + 3C--> 2KCl + 3CO2 -> w g KClO3/1g C
now multiply by 12.5 x and w, you get x+w=75g!
The use of activated carbon is recommanded since very fine dust and it allows to adsorb a lot of things acidity, gases,...
------------------
"Life that deadly disease sexually transmitted".
"Chemistry is all what stinks and explode; Physic is all what never works! ;-p :-) :o)"
deezs
Frequent Poster
Posts: 113
From: Hungary
Registered: MAY 2001
posted 07-23-2001 02:16 PM
--------------------------------------------------------------------------------
The periodic table of the elements should be in your head!
C 12
S 32
Cl 35.5
O 16
K 39
Frequent Poster
Posts: 49
From:
Registered: JAN 2001
posted 07-05-2001 04:46 PM
--------------------------------------------------------------------------------
Hi guys
In a topic I've read about a low explosive containing 75% KClO3, 12.5% C, 12.5% S.
Is this really the best composition? I think 65:20:15 works much better. Does sb know the "optimal" percentages of these ingredients (means that the fuel is completely oxidated by the KClO3)?
Which do you think is the best low explosive that contains a chlorate or nitrate but no metal powder?
kingspaz
Frequent Poster
Posts: 360
From: UK
Registered: SEP 2000
posted 07-05-2001 05:00 PM
--------------------------------------------------------------------------------
well for me 80% KClO3 and 20% charcoal works fine. it burns and leaves nothing left over so i guess it must be fairly well balanced.
Mr Cool
Frequent Poster
Posts: 1013
From: None of your bloody business!
Registered: DEC 2000
posted 07-05-2001 05:44 PM
--------------------------------------------------------------------------------
I use 73:27 when using KClO3/C mixtures, in grains about 1mm in diameter. It's VERY good.
kingspaz
Frequent Poster
Posts: 360
From: UK
Registered: SEP 2000
posted 07-05-2001 05:54 PM
--------------------------------------------------------------------------------
i think its superior to ordinary black powder made with KNO3 because it is easier to achieve a fast burn rate and it is also much more moisture resistant. i use it for everything because of the ease of making KClO3. i only use the KNO3 BP for fuses because of the solutbility of KNO3 in water and slower burn rate.
ALENGOSVIG1
Moderator
Posts: 782
From: Canada
Registered: NOV 2000
posted 07-05-2001 05:55 PM
--------------------------------------------------------------------------------
KClO3 and ascorbic acid works better than H3 in my opinion. KNO3/Ascorbic acid (C6H8O6) Grained works Very nicely. 46 g ascorbic acid, 78 g kno3 and 2 grams dextrin works well.
J
Moderator
Posts: 635
From: United Kingdom
Registered: SEP 2000
posted 07-05-2001 06:22 PM
--------------------------------------------------------------------------------
The ideal amount of Charcoal in any mixture is next to impossible to determine, due to the differences between the materials used to make it. Variables like cooking time also have an effect on the number of volatiles present. Getting the amounts slightly off won't matter because of this, whether you're making BP or H3. The PFP database has many formulae for BP, with a wide variation in Charcoal content.
J
PHILOU Zrealone
Frequent Poster
Posts: 479
From: Brussels,Belgium,Europe
Registered: SEP 2000
posted 07-23-2001 08:05 AM
--------------------------------------------------------------------------------
I found that composition in books a long time ago and was surpise it to be the same as black powder. 75 KClO3/12.5 C/12.5 S this mix was used in mines due to its high brisance.
It is wise to mix 1-2% CaCO3 to reduce risks of spontaneous ignition by residual traces of H2SO4 in the S.
Beware of this mix it is really very very powerful with an iron pipe 4cm diameter 35cm long with 0.5cm thickness walls (powder unpressed) set by a fuse (pipe with or without cap)don't expect to find metal pieces bigger than this space [-] except for the end cap ( a lot of KILLING schrapnells).
By calculations of optimum mixes of KClO3/S and KClO3/C you find this formula back
try it (I don't have my medeliev table so I can't do it)
2KClO3 + 3S--> 2KCl + 3SO2 -> x g KClO3/1g S
2KCLO3 + 3C--> 2KCl + 3CO2 -> w g KClO3/1g C
now multiply by 12.5 x and w, you get x+w=75g!
The use of activated carbon is recommanded since very fine dust and it allows to adsorb a lot of things acidity, gases,...
------------------
"Life that deadly disease sexually transmitted".
"Chemistry is all what stinks and explode; Physic is all what never works! ;-p :-) :o)"
deezs
Frequent Poster
Posts: 113
From: Hungary
Registered: MAY 2001
posted 07-23-2001 02:16 PM
--------------------------------------------------------------------------------
The periodic table of the elements should be in your head!
C 12
S 32
Cl 35.5
O 16
K 39