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Blasting cap/Primary Explosives
A blasting cap is a small sensitive primary explosive device generally used to detonate a larger, more powerful and less sensitive secondary explosive such as TNT, dynamite or plastic explosive.
1. Non electric caps
2. Electric caps
3. Fuse caps
Most blasting caps contain what is called a primary explosive. A blasting cap may also contain a booster, another explosive to make the cap more powerful, and thus more reliable for detonating secondary stabile explosives.
Primary explosives can detonate by the action of a relatively weak mechanical shock or by a spark; if used in the form of blasting caps, they initiate the booster which then initiates the main explosive. They are also filled in percussion caps mixed with friction agents and other components. An initiating explosive must be highly brisant and must have a high triggering velocity. The most important/popular primary explosives are Mercury Fulminate, DDNP (diazodinitrophenol), Acetone Peroxide (AP), HMTD (Hexamethylene Triperoxide Diamine), PETN (too difficult to produce), Lead Azide, Lead Trinitroresorcinate, Silver Azide, and Tetrazene.
Description of the four most popular primary explosives:
Risk: Unacceptable (30%+ chance of blowing yourself up)
Easy to manufacture: relatively easy
Very popular among Jihadi terrorists and probably the easiest compound to manufacture (although Hydrogen Peroxide is increasingly harder to acquire due to EU anti-terror laws). I only found one single UK supplier on Ebay for the 30% liquid. However, do not try to create this as it is EXTREMELY unstable (sensitive to friction and shock). It is a 40% probability that you will end up blowing yourself up.
Risk: Somewhat acceptable (15%+ chance of blowing yourself up)
Easy to manufacture: relatively easy
Very popular among recreational users. This compound is noticeably more stable than AP but still caries VERY HIGH risk as it is unstable and sensitive to friction, shock and even to static electricity. 5 times more safe than AP.
Stability:unstable (But significantly more stable than AP and considerably more stable than MF)
Risk: Somewhat acceptable (less than 5-10%+ chance of blowing yourself up)
Easy to manufacture: moderately easy
When creating a blasting cap it is recommended that you choose DDNP as it is significantly less sensitive than MF and AP, yet still sensitive enough to effectively initiate all boosters and many secondary explosives. It still carries HIGH risk as it is unstable and sensitive to friction, shock and to a degree static electricity. 10 times more safe than AP. The charge however must be a minimum of 6 g and confined in order to detonate properly.
If I had to choose a compound in which to produce I would select DDNP first, then either MF or HMTD.
HMTD (Hexamethylenetriperoxidediamine) – Not properly reviewed
Hexamethylenetriperoxidediamine, or H.M.T.D., is a primary explosive, very good for a home manufacturer due to the ingredients, which in Europe is very easy to find. It is a better initiator, and less sensitive, than Mercury Fulminate, and more storage stable than C.T.A.P. VoD is 5100 m/s at 1.10 g/cm3. Relative briscancy = 0.35.
Like all explosives, in particular organic peroxides, this should not be stored for extended periods of time. It gradually decomposes (although I have a very old sample which is still fine), and there have been some cases of spontaneous detonation. I think this is due to insufficient washing, however.
Not properly reviewed. My impression is that DDNP is a better option. You might want to choose HMTD if you are having problems acquiring the materials for DDNP.
The best and safest choice as of 2010 would be DDNP:
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