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Morgan
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[*] posted on 6-5-2021 at 03:34


On eBay teflon tubing is described as S, T, or L from Chinese sellers. They sometimes list it as a size or sometimes as a type. Any ideas?

I just discovered it pertains to wall thickness in Teflon tubing. L is the thinnest and S is the thickest wall diameter. So something with an inside diameter of 1mm for example, choosing L,T, or S indicates which wall thickness although outside diameters were also stated in the description.

[Edited on 7-5-2021 by Morgan]
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Jebby
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[*] posted on 14-5-2021 at 09:14


Anyone know where I could find detailed information on the properties of ETN like at what temperature it DDT’s? I know where to look to find the boiling and melting points.
I’m just trying to figure out how I could get ETN to detonate reliably by thermal decomposition without wasting a lot of it.

Nvm I Utfse

[Edited on 14-5-2021 by Jebby]

[Edited on 14-5-2021 by Jebby]
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MineMan
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[*] posted on 16-5-2021 at 13:26


Quote: Originally posted by Jebby  
Anyone know where I could find detailed information on the properties of ETN like at what temperature it DDT’s? I know where to look to find the boiling and melting points.
I’m just trying to figure out how I could get ETN to detonate reliably by thermal decomposition without wasting a lot of it.

Nvm I Utfse

[Edited on 14-5-2021 by Jebby]

[Edited on 14-5-2021 by Jebby]


It can’t just be a temperature. I would look into catayliztz
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[*] posted on 16-5-2021 at 20:50


(I was going to start a thread, but I figured it might be more appropriate to post my questions here).

So I have numerous questions regarding making nitrates and energetic materials. I just want to make very small batches of this stuff just as a proof of concept and for fun. I am not experienced in making energetics except for black gunpowder and nitrocellulose, both of which I’ve made a few times with great success (but no more than 10 grams of powder and 2 cotton balls at a time), and I wanted to try my hand at making small quantities of the following: RDX, ETN, Picric acid, Ammonium Picrate, Nickel Hydrazine Nitrate, and (possibly) DDNP. I wanted to try to make PETN, but getting some of the chemicals is a bigger headache than I care to go through.
I looked through the forums and some of the threads regarding many of these materials, and I still have quite a few questions to ask about these. Primarily about safety (I believe in safety first, second, and third. Results last and I will sacrifice an optimal yield for added safety), and secondly about making sure I have everything setup to make them successfully. I figured I’d make a big question dump in one go to get all the info I need. Chemistry is something I got into recently and most of the stuff I have been doing is fairly safe (extracting chemicals from random store products, crystalizations and recrystalizations, electrolysis, concentrating chemicals, etc, etc).

1: Sensitivity: I once thought about making TATP, but after seeing several videos on how insanely sensitive it is I decided to wisely heed the warning you had on the wiki and steer as clear of all peroxide-based energetics. I value my fingers far too much to even dream of making that stuff.
But that being said, I do have other questions concerning sensitivity. I know RDX is considered super stable, so I am not worried about that. But what about ETN? ETN, as I’ve read, is three times more sensitive than PETN. What does that mean exactly? Just how sensitive are we talking about here?
I mean if I wanted to make blasting cap and I put 1 gram or 0.75 grams as a booster and gently pressed it with a wooden dowel, would there be any chance of detonation? What about fire in that regard? Can someone please tell me what ‘three times more sensitive’ means exactly.
Also I’ve seen some people make blasting caps and use small bits of cotton as a spacer between the booster, the primary, and the ignition mixture. If I wanted to make a blasting cap using ETN, NHN, and black powder, and if I decided to use nitrocellulose in place of the regular cotton, would that possibly cause problems? I’m just asking because I thought of doing that and I don’t want to end up doing something bad. (I figure the nitrocellulose would give the blasting cap a bigger kick).

Regarding Picric acid. I know it should be kept stored in a wet state (as normally all explosives when not in use) but the wiki makes it look like it is a lot more dangerous than others. Is ammonium picrate more or less stable?

Finally, about DDNP, I saw on the thread about it that its impact sensitivity is 1,5 Nm (150g from 1 meter or 1,5 kg from 10 cm). That means dropping a 1.5 kilo weight from 10 cm will cause it to detonate? How dangerous is softly pressing it into a cap is? Redundant I know, but I really need to ask.

2: Nickel Nitrate:
I’ve read that nickel nitrate can be made by mixing nickel oxide in nitric acid. Would nickel metal suffice? I don’t have nickel oxide or nickel chloride, but I do have a good supply of 99.6% pure nickel strips. I’ve seen videos where some guys let the metal dissolve in a 65-68% HNO3 solution. Would 90+% fuming HNO3 also produce a similar result? The results would have a green solution. According to the thread on NHN, the formula states to mix both the hydrazine sulfate and nickel nitrate in 95% ethanol before mixing. If the nickel nitrate is already in a liquid state, would addition of ethanol be necessary at that point?
Also how much nickel metal to acid is needed for an optimal result? How important is the addition of 30% hydrogen peroxide is to the solution (I’ve seen videos were some use it and others don’t).

3: Fenton’s reagent.

Yes I know it isn’t an energetic, but I will need it to dispose of the picric acid/ammonium picrate I most likely will be making, but the exact proportion of hydrogen peroxide to iron chloride is unclear to me. Can someone just give me a quick ratio?

4: Sulfuric acid, diluting and measuring.
When diluting sulfuric acid. If I diluted drain cleaner grade (93% estimated, with inhibitors) would this cause any difference in the reactions I need in projects (Hydrazine sulfate for example). Or would it have to start off as reagent grade? Would it make much of a difference?
I would measure the mass/volume of my acid to find out the percentage, but sadly my scale doesn’t go beyond 0.01 grams. What other way is there for testing the percentage without any special equipment?

I think these are all the questions I have for now.
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Oxy
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[*] posted on 17-5-2021 at 00:51


I would not use drain cleaner for any reaction without purification. Inhibitors can affect the reactions in unpredictable ways
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Sulaiman
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[*] posted on 17-5-2021 at 06:12


If a fountain type firework uses a mixture of potassium nitrate with sulphur and iron powders,
in a humid environment, is it likely or possible that people downwind may smell hydrogen sulphide?

(considering testing... just curious)




CAUTION : Hobby Chemist, not Professional or even Amateur
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[*] posted on 17-5-2021 at 13:20


Quote: Originally posted by Oxy  
I would not use drain cleaner for any reaction without purification. Inhibitors can affect the reactions in unpredictable ways


I used drain cleaner to make my nitrocellulose and it worked quite well. I made 3 small batches... I discovered that if you undernitrate the cotton balls they become LESS flammable than normal cotton balls!

No joke. When I made my first attempt. I looked at the small container with the nitrating mixture and I figured 'I can fit 4 balls in there' and I put four cotton balls instead of two. What happened is that the end result was practically flame resistant than flammable. My 2nd attempt had 3 balls, and they burned well, but not as fast as you would expect. My 3rd and latest attempt (little more KNO3 than the formula called for) with 36 hours of nitration instead of my usual 24 resulted in a super fast burning nitrocellulose.

I used drain cleaner grade acid for all of those attempts, as I didn't have the apparatus for purifying sulfuric acid just yet. Right now I'm concentrating some store 3% hydrogen peroxide to 30+%. It takes forever and I am doubtlessly losing due to using the evaporation method, but it works for my purposes and for the amounts I need.
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[*] posted on 30-5-2021 at 12:40


Anyone know if it would be possible to set off 5 to 10g of melt cast etn with little confinement with a 75/25 1g det cap that has .25g of melt cast etn with .25 of powdered etn on top. I’m just wondering if anyone has an idea if it would work or not because I don’t really want to waste etn
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MineMan
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[*] posted on 31-5-2021 at 00:37


Jebbayyyyy

Many are going to be reluctant to answer because this forum is built off of experimenting.

When it comes to explosives. Follow your gut even if it does not make sense.
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B(a)P
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[*] posted on 31-5-2021 at 01:12


Quote: Originally posted by Jebby  
Anyone know if it would be possible to set off 5 to 10g of melt cast etn with little confinement with a 75/25 1g det cap that has .25g of melt cast etn with .25 of powdered etn on top. I’m just wondering if anyone has an idea if it would work or not because I don’t really want to waste etn


Some more info would be useful. Is you det cap proven to be reliable? Are you sure that the melt cast etn component of your cap is detonating? What makes up the other 0.5 g of your cap? There are some good threads on SM on this very subject, I would post the links but I have terrible reception and am using a phone.
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math
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[*] posted on 2-6-2021 at 18:22


What are some ideal energetic materials, in terms of being low in manufacturing costs, ease of synthesis, good thermodynamic properties and having low shock and friction sensibility? Thanks

[Edited on 3-6-2021 by math]
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[*] posted on 3-6-2021 at 05:52


Quote: Originally posted by math  
What are some ideal energetic materials, in terms of being low in manufacturing costs, ease of synthesis, good thermodynamic properties and having low shock and friction sensibility? Thanks

[Edited on 3-6-2021 by math]


DAUN
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[*] posted on 7-6-2021 at 23:48


Quote: Originally posted by math  
What are some ideal energetic materials, in terms of being low in manufacturing costs, ease of synthesis, good thermodynamic properties and having low shock and friction sensibility? Thanks

[Edited on 3-6-2021 by math]


Well in my experience there is no "ideal" energetic material. They all have thier pro's and con's

Take TATP as an example: Its easy to synthesize but stupidly sensitive.
RDX is another example: relatively easy to make (if you got the precursors) but quite hard to detonate. You cant just stick a fuse in it.

For my needs i find that ETN will probably do the job. I can get everything that is needed to synthesize it quite easily Online. Its stable enough to be worked with (meaning it doesnt detonate when you just lightly touch it eg. TATP) and i found a plan for a detonator from someone on here that uses ETN as main charge and Silver acetylide as Primary.

My suggestion is you browse the forum for a while and evaluate different energetic materials and thier pro's and con's and find the one hat suits your situation the best. If i got something wrong fel free to correct me.

Cheers :)

[Edited on 8-6-21 by kweiny]
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[*] posted on 12-6-2021 at 20:34


Quote: Originally posted by Sulaiman  
If a fountain type firework uses a mixture of potassium nitrate with sulphur and iron powders,
in a humid environment, is it likely or possible that people downwind may smell hydrogen sulphide?

(considering testing... just curious)


KNO3 + S + fuel reactions are interesting. Gunpowder has been researched pretty thoroughly. As usual I don't have the reference on hand. Among other products KNO3 + S produce complex sulfides of potassium which can react with water to make H2S. Gunpowder charcoal contains enough volatiles to produce H2S directly.

I'm curious that the firework described will be a fountain because relatively little gas will be produced. I'd expect some charcoal or other gas-producing fuel.
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[*] posted on 18-6-2021 at 21:30


Quote: Originally posted by Sulaiman  
If a fountain type firework uses a mixture of potassium nitrate with sulphur and iron powders,
in a humid environment, is it likely or possible that people downwind may smell hydrogen sulphide?

(considering testing... just curious)


Unlikely, out of all the testing I have done with fountains outdoors, I have never run into a problem with the smell of hydrogen sulfide. As long as pure chemicals are used, I don't think this will be a issue for you.

[Edited on 6-19-2021 by Runic7]
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