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Backyard Ballistics This forum is dedicated to the safe teaching and responsible handling of high and low explosives. You will not find any information on how to make "bombs" or any such device(s) . Backyard ballistics will teach you the science and the art of pyrotechnics and how to manufacture and use explosives/pyrotechnics safely and responsibly. Backyard ballistics is also a haven for rocketry and pneumatic cannons. All information contained within this forum is for educational purposes ONLY. Totse does not accept responsiblity for any incident involving the use of the information contained within this forum.

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 #1 
Old 2002-03-10, 21:01
Moderator
 
directly over the center of th
Default HMTD

i have been looking around for a procedure on makeing HMTD but i have yet to find one the only info i have found is listed below

Information on HMTD:

HMTD is a very unstable primary explosive compound that can be made from hexamethylenetetramine, hydrogen peroxide, and citric acid.

With this explosive it is possible to create a blasting cap. This primary shock wave will detonate the base charge in the caps. The base charge of the cap is normally R.D.X. or some other high explosive. The base charge needs to be powerful and stable, but still sensitive to the primary detonation wave. The 6700 M/sec. plus base charge detonation velocity, will set off the main charge.

HMTD is a high performance initiating explosive. It is one of the better initiating explosives but has some definite drawbacks. HMTD is not stable at even slightly elevated temperatures. Room temperature will even cause a decrease in performance with storage time. As one would imagine, due to the extreme excess of oxygen, the corrosion of metals in contact with the peroxide is a problem. The metals that will cause problems are aluminum, zinc, antimony, brass, copper, lead and iron. These metals in contact with the HMTD even when dry, will cause corrosion.

DETONATION VELOCITY: 4511 M/sec. @ 0.88 G/cc
5100 M/sec. @ 1.10 G/cc

FRICTION SENSITIVITY: Very Sensitive!!!

BEHAVIOR TO FLAME: Small quantities flash like guncotton Large accumulations will detonate.

Materials Sources
----------------

Hexamethylenetetramine C6H12N4 - solid fuel tablets for camping out available at army surplus stores. Also known as urotropine, hexamine, methenamine, etc.
Hydrogen Peroxide 6% H202 - or stronger. It can be purchased at a beauty supply store. It is sold as hair bleach. I asked them for hydrogen peroxide. They said that they don't sell pure H202 but they gave me a product that was used in the process of lightening hair. I got the strongest number. If you look at the back of the bottle is shows that H202 is the main ingredient.
Citric Acid C6H8O7 - Available at Drug or Food stores, known as "sour salt" (I ordered it from "The King Arthur Flour Baker's Catalogue)
Containers, (I used empty yogurt containers)
Coffee filter
Teaspoon and 1/2 teaspoon measuring spoons
Pan
Distilled water
Procedure
---------
This information is no longer available. However I will give some tips on the procedure:

Permite solution to stand at room temperature or in the refrigerator until solid particles for at the bottom of the container. Complete precipitation will take place in 8-24 hours

After precipitation, filter the mixture through a coffee filter into a container to collect the solid particles. Wash the solid particles collected in the coffee filter with distilled water by pouring the water over them. Discard the liquid in the container. Allow to dry. In a COOL dry place. NOT IN THE SUN! Place these explosives in a container.


this information was found at

http://www.xinventions.com/main/pyro/hmtd.htm

i was wondering if any one had a better procedure
and if you knew a safe amout to work with
 #2 
Old 2002-03-10, 23:04
Rat_Bastard Rat_Bastard is offline
Regular
 
Default Re: HMTD

Here is the FULL version of that text:
(this was from when the page was still called "Aerodynamic inventions".
-----------


How to Make "HMTD" Exposive

HMTD

WARNING: HMTD is dangerous and sensitive to FRICTION, SHOCK, HEAT OR FLAME.
Handle with great care !! Even wet HMTD is dangerous and will detonate with ease.
This is a dangerous explosive! If this explosive is let to sit in the sun,
IT WILL DETONATE! If you do not have experience with explosives DO NOT MAKE THIS.

Due to the extreme sensitivity to heat, shock, and friction make HMTD a poor choice
for the lesser skilled chemist.

Information on HMTD:

HMTD is a very unstable primary explosive compound that can be
made from hexamethylenetetramine, hydrogen peroxide, and citric acid.

With this explosive it is possible to create a blasting cap.
This primary shock wave will detonate the base charge in the caps.
The base charge of the cap is normally R.D.X. or some other high explosive.
The base charge needs to be powerful and stable, but still sensitive to
the primary detonation wave.
The 6700 M/sec. plus base charge detonation velocity, will set off the main charge.

HMTD is a high performance initiating explosive.
It is one of the better initiating explosives but has some definite drawbacks.
HMTD is not stable at even slightly elevated temperatures.
Room temperature will even cause a decrease in performance with storage time.
As one would imagine, due to theextreme excess of oxygen, the corrosion of metals
in contact with theperoxide is a problem. The metals that will cause problems
are aluminum,zinc, antimony, brass, copper, lead and iron.
These metals in contact with the HMTD even when dry, will cause corrosion.

DETONATION VELOCITY: 4511 M/sec. @ 0.88 G/cc
5100 M/sec. @ 1.10 G/cc

FRICTION SENSITIVITY: Very Sensitive!!!

BEHAVIOR TO FLAME: Small quantities flash like guncotton Large accumulations will detonate.

Materials Sources
----------------

-Hexamethylenetetramine C6H12N4 - solid fuel tablets for camping out
available at army surplus stores.
Also known as urotropine, hexamine, methenamine, etc.

-Hydrogen Peroxide 6% H2H2 - or stronger. It can be purchased at a beauty supply store.
It is sold as hair bleach. I asked them for hydrogen peroxide.
They said that they don't sell pure H2H2 but they gave me a product that was
used in the process of lightening hair. I got the strongest number.
If you look at the back of the bottle is shows that H2H2 is the main ingredient.

-Citric Acid C6H8O7 - Available at Drug or Food stores, known as
"sour salt"(I ordered it from "The King Arthur Flour Baker's Catalogue)

-Containers, (I used empty yogurt containers)

-Coffee filter

-Teaspoon and 1/2 teaspoon measuring spoons

-Pan

-Distilled water

Procedure
---------
Measure 9 teaspoons of hydrogen peroxide into a container.
In 3 portions, dissolve 2.5 teaspoons of crushed hexamine in the peroxide.
Keep the solution cool for 30 minutes by placing the container in a pan of cold water.
In 5 portions, dissolve 4.5 teaspoons of crushed citric acid in the
hexa-peroxide solution.
Permite solution to stand at room temperature or in the refrigerator
until solid particles form at the bottom of the container.

Note: Complete precipitation will take place in 8-24 hours

Filter the mixture through a coffee filter into a container to collect the solid particles.
Wash the solid particles collected in the coffee filter with 6 teaspoons
of distilled water by pouring the water over them. Discard the liquid in the container.
Allow to dry.� In a COOL dry place.� NOT IN THE SUN! Place these explosives in a container.

Note: Handle dry explosive with great care. Do not scrape or handle it roughly.
Keep from open sparks or flames. Store in a cool, dry place.

READ THIS! When the complete precipitation has taken place a filmy layer should have
formed. I have noticed sometimes there will be less or almost no film in the container.
When this happens BE CAREFUL it usually means that it is a LOT more powerful then usual.

----------

If you want another formula try here: http://wind.prohosting.com/megaback/megalomania/explo/HMTD.html


I have all the chemicals ready, and I will tell you the results when I make it soon.

[This message has been edited by Rat_Bastard (edited 03-10-2002).]
 #3 
Old 2002-03-10, 23:15
Moderator
 
directly over the center of th
Default Re: HMTD

thanks for that info and how did you come across the other megalomania ??
 #4 
Old 2002-03-11, 03:11
Zero the Inestimable Zero the Inestimable is offline
Regular
 
Default Re: HMTD

That's a mirror that someone from the Weirdpier forums posted after Megalomania's official site was shut down.

~Zero the Inestimable
 
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