1. 40 ml H202 (30% for lower percentages adjust accordingly.) 2. 13 g hexamine 3. 20 g citric acid
First 40 ml of H2O2 (left) were measured out and chilled to around 0 Celsius in a freezer, and then 13 grams of powdered hexamine (middle) were weighed out and stirred in. There was some stirring required to dissolve all the hexamine, but it eventually all dissolved. The solution was then placed back into the freezer to chill it back down to 0 Celsius. 20 grams of citric acid (right) were then weighed out and slowly added to the solution keeping it close to 0 Celsius.
The solution was stirred for around 5-10 minutes more and then kept at 0 Celsius for an hour with stirring every few minutes. Stirring for 3 hours at 0 Celsius apparently improves yields, but I don't do this. The solution was then left at room temperature for 3 hours, and upon inspection at this point was seen to be a semi-solid mass with no visible liquid.
This was then filtered and washed with water and a sodium bicarbonate solution. Washing with alcohol can be done to speed up drying. The HMTD is then left to dry out before use.
Joined: Nov 2007 Gender: Male Posts: 8 Location: Australia Karma: 0
Re: HMTD « Reply #1 on Dec 1, 2007, 6:46am »
This is slightly different from my HMTD synth. I believe HMTD is a brilliant primary, and reports of it's sensitivity and lack of storage ability to be way of,(at least in my experience). Today I detonated some ETN with HMTD. It was the last of my current supply, and it was 3 months old, I stored it in an airtight clipseal bag(double bagged) and it was kept simply in a cool dark place. 3 months and not a trace of sublimation, and it's initiating ability was still as good as the day I made it. TO summarize, I LOVE HMTD.
Joined: Nov 2007 Gender: Male Posts: 17 Location: malaysia Karma: 0
Re: HMTD « Reply #2 on Dec 2, 2007, 10:38pm »
damn it!! i can't get any citric acid, is there anyway i can use any acids instead of citric acid?? (citric acid is as a catalyst though). Like vinegar.... or dilute sulfuric acid.... (sulfuric acid is the only acid i can get on my hand). just how concentrate it must be used?? give me in percentage.....
Joined: Nov 2007 Gender: Male Posts: 8 Location: Australia Karma: 0
Re: HMTD « Reply #5 on Dec 3, 2007, 5:16am »
There has been alot of discussion on whether or not other acids can be used for HMTD. Some say it is just the catalyst so other acids can be used, although the general concensus is that only citric acid works, it is the only acid I have used. You really should be able to get citric acid, in oz all it takes is a trip to the grocery store, but if you can't get it you can't get it. My advice would be to really look hard for citric, but if you can't find it I have found a synth that uses HCl, I have not tried this synth so I don't know if it will work, but hey there's only one way to find out. The reagents are. 23.5 grams of 30% H2O2 7 grams of hexamine 31.6 grams of 30% HCl The method is the same as the same as the citric acid synth, obviously temperature control would be more of an issue with the stronger acid. Give it a go but be carefull. Sorry the amounts are in grams rather than ml's, but it was the only synth I could find that didn't use citric acid. and that's how it was layed out. If you decide to give it a go and are having trouble converting the grams to ml's,( shouldn't be a problem if you have a good set of scales), yell out and i'll try to help.
Joined: Nov 2007 Gender: Male Posts: 17 Location: malaysia Karma: 0
Re: HMTD « Reply #6 on Dec 3, 2007, 6:03am »
geez, thanks a lot,....... i'll try 'em.. but, then again.. i'm also hard to get hidrochloric acid though.. i guess, i will find the citric again, and ask 'em in the bakery shop....
geez, thanks a lot,....... i'll try 'em.. but, then again.. i'm also hard to get hidrochloric acid though.. i guess, i will find the citric again, and ask 'em in the bakery shop....
If you can get sulfuric acid, you can make hydrochloric.
Here's a thread all about generating HCl (gas that is, although all you'd have to do it bubble it through water).
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