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chelpus

chelpus

just wishing to be happy with her forever
Feb 20, 2026
11
I wanted a way to CTB at any given time that I really need to, and I needed something that would surely guarantee my death. Because of this, I've done some research on cyanide, and found out that the Nazis had suicide pills containing cyanide during World War 2, and was even used by Hermann Göring, a Nazi official, to end his life just hours before his scheduled execution.

I've then came across this thread, which member @carfemtanyl mentions "thermal decomposition of potassium ferrocyanide", which gave me an interest to do further research:

I wanted to create my own kind of suicide pill, made out of potassium cyanide, as I'm looking for one that I could potentially ingest if a time comes that I desperately need to CTB, or if I have access to an acid and I still have freedom, I could simply combine an acid with the potassium cyanide to produce gaseous hydrogen cyanide which would knock me out unconscious in a few seconds and would reliably kill me.

The problem is that I am not somebody with a license, I can not legally purchase potassium cyanide anywhere, so I would have to resort to methods of producing this in my backyard. I've done plenty amount of research, and I've been looking into an old method of producing potassium cyanide that was used in the 1800s, which involves the thermal decomposition of potassium ferrocyanide, a compound that I can purchase quite easily.

I will be describing the process below, and to anybody with knowledge in chemistry, I would love the following questions to be answred:
- Do you know of a better method to produce potassium cyanide or sodium cyanide that a layperson in chemistry like me without access to a proper laboratory environment could pull off, that would be more safer or more reliable than the described process below?
- If you spot any flaws within the process, could you please point it out to me and correct my mistake? Thanks!

The idea is to mix potassium ferrocyanide with potassium carbonate, put it in a crucible and heat it up to around 650C, and also adding carbon to it to reduce any cyanate impurities created in the process back into cyanide, maximizing the yield, aiming for the reaction:
2K4[Fe(CN)6] + 2K2CO3 + C -> 12KCN + 2Fe + 3CO2

At the temperature described above, the potassium carbonate and potassium ferrocyanide begin to melt and react. The reaction would then bubble as the carbon reduces the cyanate and evolves gases. Once the initial gas evolution slows down, the temperature is pushed up to around 700C, aiming to lower the viscosity of the molten potassium cyanide, allowing the heavy iron and carbon particles to drop out of the liquid suspension, ensuring a high purity of potassium cyanide on top.

I would also put a lid on top of the crucible during the process, but ensure it's not completely sealed to allow CO2 and CO to escape. This is to avoid the rapid oxidation of the cyanide, as if the crucible was open, it would allow oxygen to flow freely over the molten potassium cyanide, which would oxidize the potassium cyanide to potassium cyanate.

A big indicator that the chemical reaction I'm aiming for is finished, would be if the bubbling completely stops and the surface becomes a calm flat liquid of potassium cyanide. At this point, I would stop heating it up and seal the crucible completely as it cools down, ensuring that no oxygen would get in and oxidize the cyanide into cyanate during the cooling process.

In theory, if everything goes well and this process is correct, I would be left with a pretty high purity of potassium cyanide.

Sources of information:
 
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P

Pepsi antti

Member
Feb 28, 2026
9
Cyanide gas used in executions in the United States. Witnesses report great suffering.
 
F

FrustratedMTFtrans

Member
Apr 17, 2026
15
A much less complicated solution could be to crack open apricot or morello cherry stones, extract the kernels (seeds) and thoroughly chew them. The Amygdalin in the kernels reacts with enzymes in saliva and intestines to create HCN and benzaldehyde, recognizable by its typical almond or marzipan flavor.

Reports indicate 9 Morello cherries chewed in one go will produce acute cyanide toxicity in a person weighing 150 pounds before the body can eliminate the HCN. Apricot kernels are said to reach that level after chewing 20-30 kernels.

I've only tried 3 plum kernels so far, didn't get symptoms of cyanide poisoning, but noticed a pronounced almond-like flavor, indicating that HCN had been produced in my body. Aside from apricot and morello cherry kernels, plum and peach kernels are said to contain quite a lot of Amygdalin, but apparently not quite so much.
 
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dustoff

dustoff

Member
Apr 15, 2026
19
I made a guide on making SN, all of the ingredients are non regulated so you don't need to worry about that part you can just buy it off of any online store. Also since you seem to have a fair amount of chemistry knowledge I think it you would find it quite straight forward.
https://sanctioned-suicide.net/threads/synthesizing-sn-through-chemistry-guide.225683/
i eyeballed that. it seems too complicated for a mid tier suicide substance when it's possible to cook nembtual from ppeh guides IMO
 
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chelpus

chelpus

just wishing to be happy with her forever
Feb 20, 2026
11
I made a guide on making SN, all of the ingredients are non regulated so you don't need to worry about that part you can just buy it off of any online store. Also since you seem to have a fair amount of chemistry knowledge I think it you would find it quite straight forward.
https://sanctioned-suicide.net/threads/synthesizing-sn-through-chemistry-guide.225683/
That was an interesting read! However, I'm not looking to produce SN, and it's actually quite available here in my country that I can straight up purchase 500g of high purity SN for around 15$ easily online, and get it delivered to my front door without any questions. I'm looking for something that can reliably kill me at a moment that I need to, would not require me to follow a complicated regimen of taking antiemetics like metoclopramide at specific times to minimize the risk of vomiting, and would kill me in less than an hour.

Also since you seem to have a fair amount of chemistry knowledge
Actually, I do not. Researching this has been the first and only time I've interacted with chemistry in my life. Pulling this off as somebody who has pretty much no experience would probably be a suicide mission on its own, but it's a risk I'm willing to take. Seems fun too! :D

Due to my lack of knowledge and experience, I came here to ask anybody with knowledge in chemistry like you, if my described process has any flaws, or if you could provide any tips that would help me along the process.

I'm still doing research, and I have yet to purchase the materials I need. I'll be providing additional information below, based on the research I've done so far:

The most common commercial form of potassium ferrocyanide sold to the public is potassium ferrocyanide trihydrate. Before performing the process described in the post above, I would have to heat it at around 100C - 150C to dehydrate it to its anhydrous form.

Everything that I will be using for, let's say the thermal decomposition of 100g of dried potassium ferrocyanide:
- 100g of anhydrous potassium ferrocyanide
- 37.5g of anhydrous potassium carbonate
- over 1.63g of carbon (powdered charcoal grounded to flour consistency or activated carbon powder)
- A crucible made out of mild steel, cast iron or graphite
- Propane torch

Stoichiometric verification:
Anhydrous potassium ferrocyanide (K4[Fe(CN)6]): (39.10 × 4) + 55.85 + (12.01 × 6) + (14.01 × 6) = 368.35g/mol
Anhydrous potassium carbonate (K2CO3): (39.10 × 2) + 12.01 + (16.00 × 3) = 138.21g/mol
Carbon (C): 12.01 g/mol
Since the equation mentioned in the post above requires a molar ratio of 2 : 2 : 1,
100g K4[Fe(CN)6] ÷ 368.25 = 0.2715 moles
37.5g K2CO3 ÷ 138.21 = 0.2713 moles
1.63g C ÷ 12.01 = 0.1357 moles

Extraction:
I have two possible ways I could extract the potassium cyanide after the process is finished:
1. I could let the molten potassium cyanide cool down and solidify completely within the same crucible under a sealed lid. This would be simpler, but the extraction process would also be quite messy, as I would have to crack and pry the potassium cyanide cake away from the walls of the crucible and bottom. (I don't know why, but the thought of casually prying and scraping off one of the most potent poisons in the world is so funny to me 😭.)
2. At around 700C, the molten potassium cyanide is fluid enough that the heavy iron particles sink to the bottom. I could tilt the hot crucible with long tongs and pour the upper layer of molten potassium cyanide onto another container that can withstand that temperature, seal it and cool it down.

I could record myself attempting the process, and if it all works out, I'd upload it here, as it may help others who may want to go on the same route. However, I'd definitely not recommend anybody to attempt the same, as this probably is a whole suicide mission on its own.
 

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