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qwerty
Harmless
Posts: 10
Registered: 10-12-2024
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I reviewed the DetVel data. Its a table with time data and optical channel rise data. They show 8 channels but they use 4 as the STL file also has 4
holes for fiber optics spaced 15mm apart. I've tried to convert them to a useable detvelocity by am missing a factor of 10000000 (0,1 microsecond)
somewhere, i'm guessing. Took the output on every channel of around 1000 and noted the timestamp there.
from this I think they got
5614m/s over the 1st 15mm of explosive material
6107m/s over the 2nd 15mm
7411m/s over the last 15mm
For an average of 6292m/s Vdet.
Quote: Originally posted by Axt  |
Supporting info presents their preparation, there's also raw VOD data but that's too hard to decipher. I'm sure someone will buy it heh.
The synthesis procedure was as follows:
For each batch, 1.4g (10mmol) of Aminoguanidine bicarbonate was dissolved into 25ml of distilled water into a beaker with continuous stirring, at room
temperature. 2g (12mmol) of 60% perchloric acid was added to the solution, and stirring kept until the CO2 formation stopped and the solution was free
of visible gas bubbles. Then 1.6g (4.4mmol) of Nickel perchlorate hexahydrate were added.
At this point, the patent mentions that crystals start to form “in a few hours”. However, for us this was not the case, and adjusting the pH of
the solution was the only thing that seemed to make the crystals form. The pH adjustment was made by adding dilute NaOH solution dropwise, and
checking the pH at each level. The adding of NaOH changes the solution’s color from green to blue, and, when a pH of 7 is achieved, red crystals
start to immediately precipitate. The formation of the crystals raises the pH of the solution again, which self-limits the quantity of final product
obtained, if no subsequent pH adjusting is done. The yields were always greater than 70% (1.2g of NAP). To get the maximum yield without overshooting
the pH and start favorizing the formation of Ni(OH)2, multiple filtrations of the crystals were made and then readjustments of the pH for the filtered
solution. Using this method yields as high as 90% were obtained.
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[Edited on 23-10-2025 by qwerty]
[Edited on 23-10-2025 by qwerty]
[Edited on 23-10-2025 by qwerty]
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qwerty
Harmless
Posts: 10
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Took another look at the measurements an instead of sensor value of around 1000 I looked for the highest value that is the same over all sensors.
4095 seems to be the number that you find on all channels.
By doing this I get
5850
5878
5656
With an average of 5793
Seems to be the more accurate aproach
Some interesting info on the optimex device used
https://yadda.icm.edu.pl/baztech/element/bwmeta1.element.baz...
https://www.ozm.cz/int/AppNotes/OPTIMEX_AppNote.pdf
[Edited on 23-10-2025 by qwerty]
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freeflyfreak
Harmless
Posts: 11
Registered: 26-10-2015
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Mood: calm and collected
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Long time lurker with something I thought worth contributing.
Having done the iNAP synth, I became curious about the yield and remaining Ni carbonate, so I filtered and evaporated the Isopropanol solution and
found a significant amount of what I believe to be Aminoguanidine Perchlorate remaining.
I recently worked up a few small batches of NAP, trying out different salts and solvents. Just dropping a couple successes here in case anyone is
inclined to know more or try themselves. Both yielded dark red, nearly pure small crystals, far richer in color and apparent purity.
First
1g AGB, .88 AP and .68 Ni Acetate. in 10 ml 91% Isopropyl.
50lm low form beaker the solvent was brought to rolling boil (70C)
Mixture of dry ingredients were added at once
Color quickly changes to lime, dark green and black with red tint
Red crystals began to appear on the surface, followed by small crystals in solution at the 3 minute mark
Removed from heat and allowed to cool for 5 minutes to 15C
Crash out was complete by 10 minutes
Dish was placed on 30C hotplate to evaporate to dryness
1.45g dark red crystals with a small amount(~2%) of opaque aminoguanidine perchlorate as impurity.
You can extract the remaining solvent if you want purity.
second success was the same as above but using 10ml methanol(and Ni Acetate)
Outcome was similar to the above after evaporation( no solvent was removed)
Methanol dissolves the Ni Acetate and the result is a very speedy process, with the black/red tint showing up in around a minute.
Both of the above can be filtered to remove the AGP and it can be recovered by evaporation on it's own for feedstock.
Cheers.
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ManyInterests
International Hazard
Posts: 1022
Registered: 19-5-2019
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I am also having one issue with my iNAP. I made several batches and most of them have been very light pink and very effective as a primary (I tested
them out in several blasting caps and it is by far the absolutely the best primary I have used... in both safety and initiating power). But I did make
a few batches that were not quite as light pink and were dark colored and/or had some unreacted nickel carbonate. I am not sure why it happened, but I
kept those batches separate and I decided to see what would happen if I dissolved that batch again in more 91% isopropyl and boiled the stuff down
again (with strong stirring of course), it got even darker, and I am not sure why.
I'll wait for all the IPA to dry up before reporting. They popped just fine from flame before. I wonder if anything will change.
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sulfuric acid is the king
Hazard to Self
Posts: 96
Registered: 11-1-2017
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Can NAP be dextrinated and what would the process look like?
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