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wuaroi

wuaroi

Member
Jan 6, 2024
35
Hello , I apologize for making so many help posts but I am desperately trying to find a method and I am on a deadline … but I might of found a better method comparatively to H2S (hydrogen sulfide).

So my plan is to make a bag full of as much carbon dioxide as I can with as little oxygen possible. to do this I want to mix a whole box of baking soda and a lot of white vinegar together in a bottle with a hole in the cap connecting to a trash bag via a straw or some sort that can be detachable.

(Mind you I will be squeezing any air out of the bag and sealing the main opening shut allowing the only thing in the bag is the CO2 it makes.)

Once the reaction is done i will remove the bottle and close the small hole probably with duck tape or something idk. Then while still holding the main opening of the bag closed I will remove the string keeping it closed, take a deep breath, swiftly put my head in and close it with the draw strings. Then (while still holding my breath) i will quickly put a belt around the bag and my neck to keep in extra secure and after all of this is done, I will inhale as much air as I possibly can and hopefully pass out? Hopefully I will pass out in 10seconds< of taking very deep breaths and in turn die after fainting but I have a few questions.

Questions-
I would love to look these up on google but Im having much luck on the web so im here to see if you guys know.

1.) quantity.
Will a box of baking soda and how ever much vinegar it needs to be fully saturated enough? If not how much soda will I need to fill the bag with enough to pass out very quickly?

2.) pain.
After doing so many ridiculously painful methods to no avail, I am desperately looking for one that is realitivly painless but is extremely fast like less than a minute (to pass out at least ). How painful and quick will this generally be and what should I expect the feeling to be like?

3.) likely hood.
Is this actually going to make me pass out quickly and will I die? I understand that some people take the bag off when they're unconscious but other than that would this work if we ignore that possibility? Because I think I know how I can avoid that from being an issue.


4.) time until death (where resesitation is unlikely to impossible.
Lastly I want to know how long after passing out it will take me to actually die and at a point where I wont have to worry about paramedics saving me or like cpr. Although I understand that theres no exsact way to know, are we looking at like 5-10mins, 30-40mins or like 50< mins?

Thank you so much for reading this and if you know the answers to my questions please answer I really need help.
Also if there's anything wrong with this or something that I can improve with the same materials please lmk I only have 2weeks until I absolutely need to cbt I am so desperate to find the answers to my questions.

extra background about the H2S situation [skip able]
I mentioned it earlier in this post and ive made two other posts about this similar method but with FeS and HCl but I decided that I needed to find a better way because if I did manage to live or if something goes wrong etc etc, I dont want to A, leave a huge very noticeable bio hazard behind and B, I dont want to come back home smelling potentially of rotten eggs because that would be very bad. So in turn I thought about this method as CO2 isnt as dangerous and it also does reak of a horrible stench that sticks to you and your clothes.

Thank you for reading all of this have a great day and again, if you have any answers please lmk.
 
maniac116

maniac116

My own worst enemy🌹💔
Aug 10, 2024
1,912
C02 is exactly what sets off oxygen deprivation, kicking in gear your SI, then the body starts desperately trying to get oxygen by violently gasping for oxygen.
I'm not trying to throw a negative spin on it.
Just want you to be aware. Lack of oxygen doesn't start that response, the buildup of carbon dioxide does.
I hope peace & love are able to find you! 🤗💔
 
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wuaroi

wuaroi

Member
Jan 6, 2024
35
C02 is exactly what sets off oxygen deprivation, kicking in gear your SI, then the body starts desperately trying to get oxygen by violently gasping for oxygen.
I'm not trying to throw a negative spin on it.
Just want you to be aware. Lack of oxygen doesn't start that response, the buildup of carbon dioxide does.
I hope peace & love are able to find you! 🤗💔
But do you know how quickly youd pass out? If its only like 10 seconds it probably wouldnt be too bad
 
maniac116

maniac116

My own worst enemy🌹💔
Aug 10, 2024
1,912
No I don't know, sorry 💔
 
C

CantDoIt

Elementalist
Jul 18, 2024
874
From my understanding the time to pass out depends on quantity of co2
 
Intoxicated

Intoxicated

MIA Man
Nov 16, 2023
1,063

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wuaroi

wuaroi

Member
Jan 6, 2024
35
I think, this method is likely to be substantially worse than H2S poisoning in terms of discomfort/distress and reliability.
That is true when CO2 is either gradually increased from base level but when suddenly inhaling carbon dioxide levels of 90% ppm < it overwhelms your system and although it might be uncomfortable fainting can be expected in a matter of seconds to a minute if done correctly.
I did way more research on how to do it properly with the exact amount of ingredients needed to make it a fast and generally tolerable method. I may make a final post on it as an instruction before i do it myself.
 
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Intoxicated

Intoxicated

MIA Man
Nov 16, 2023
1,063
Danneman's subjects used the following terms in reference to every concentration of CO2 tested: burning, tingling or prickling, and unpleasant (taste or odour); these terms were used more frequently at higher concentrations. Many described 100% CO2 as piercing, stabbing, painful or causing the eyes to burn or water, and 18 out of 20 subjects indicated that they were unable to take a full breath of this concentration.
Although I think that CO2 poisoning is quite endurable, it doesn't look like an unconditionally superior alternative to H2S. It's a tradeoff between comfort and produced contaminations at the death scene.

Also, vinegar doesn't look like a wise choice, since acetic acid is a volatile irritant. Citric acid should be a better reagent.
 
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M

midnight.moon

Member
Nov 18, 2024
83
I have tried this.
With a ziplock bag instead of a water bottle. A 1L water bottle won't hold much.

Same method with Ziplock bag

1. I used 2 tbsp of each, idk much about chemistry. It wasn't enough in my particular scenario.

2. Theoretically it should be painless and quick. I'll be real the smell is terribly nauseating and burns and it takes multiple practices to even get ur head inside .

I didn't have enough concentration so I ended up ALMOST Blacking out cuz I waited for around 5-7 seconds, of growing pain, then I started losing consciousness. But I took the bag off. If I had had higher conc, it would hv worked .

3. Extremely likely
 
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wuaroi

wuaroi

Member
Jan 6, 2024
35
That is true when CO2 is either gradually increased from base level but when suddenly inhaling carbon dioxide levels of 90% ppm < it overwhelms your system and although it might be uncomfortable fainting can be expected in a matter of seconds to a minute if done correctly.
I did way more research on how to do it properly with the exact amount of ingredients needed to make it a fast and generally tolerable method. I may make a final post on it as an instruction before i do it

I have tried this.
With a ziplock bag instead of a water bottle. A 1L water bottle won't hold much.

Same method with Ziplock bag

1. I used 2 tbsp of each, idk much about chemistry. It wasn't enough in my particular scenario.

2. Theoretically it should be painless and quick. I'll be real the smell is terribly nauseating and burns and it takes multiple practices to even get ur head inside .

I didn't have enough concentration so I ended up ALMOST Blacking out cuz I waited for around 5-7 seconds, of growing pain, then I started losing consciousness. But I took the bag off. If I had had higher conc, it would hv worked .

3. Extremely likely
Its nice to hear the information from experience rather than just google , can I ask you a few questions about your experience though?

1 is it the kind of burning that could be manageable if you plug your nose and take deep breaths in through your mouth?

2 do you think you woulve been able to keep the bag on if you wanted to cbt or was it way to painful.

3 and idk if you remember, but when you did it in the bag over your head how much of each did you use ? Or did you only use 2 tablespoons of each?

Sorry for all the questions Im just trying to figure out as much info before I do it myself.

My current plan that should work at a chemistry stand point is mixing a 1:1 ratio of vinegar to baking soda with 25 table spoons of both inside of a 15liter trash bag since that should make 11 extra liters of gas to compensate the potential loss of gas when you put the bag on. So theoretically I would have a bag with roughly 90ppm< (so like 90%-98% pure CO2.
Although I think that CO2 poisoning is quite endurable, it doesn't look like an unconditionally superior alternative to H2S. It's a tradeoff between comfort and produced contaminations at the death scene.

Also, vinegar doesn't look like a wise choice, since acetic acid is a volatile irritant. Citric acid should be a better reagent.
Yea I would like to use other things but all I have access to that would work is white vinegar hopefully I could manage 10seconds of it /:

Also since I live with other people I couldnt come home smelling strongly of H2S if something does fail … so hopefully I could handle it.
 
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Intoxicated

Intoxicated

MIA Man
Nov 16, 2023
1,063
Yea I would like to use other things but all I have access to that would work is white vinegar
Citric acid is cheap and widely available on the market. I can buy 1 kg of it for less than $2.5, and I guess it shouldn't be hard to obtain in general, unless you have no money. If you want some different useful household supply, you can take a look at sulfamic acid. It's a white powder used for removing rust and limescale.

1 kg of this acid costs nearly $4 at the location where I live. Reaction with baking soda goes according to this equation

NaHCO3 + H2NSO3H = H2NSO3Na + H2O + CO2
 
B

Battered_Seoul

Experienced
Jun 13, 2018
291
Hello , I apologize for making so many help posts but I am desperately trying to find a method and I am on a deadline … but I might of found a better method comparatively to H2S (hydrogen sulfide).

So my plan is to make a bag full of as much carbon dioxide as I can with as little oxygen possible. to do this I want to mix a whole box of baking soda and a lot of white vinegar together in a bottle with a hole in the cap connecting to a trash bag via a straw or some sort that can be detachable.

(Mind you I will be squeezing any air out of the bag and sealing the main opening shut allowing the only thing in the bag is the CO2 it makes.)

Once the reaction is done i will remove the bottle and close the small hole probably with duck tape or something idk. Then while still holding the main opening of the bag closed I will remove the string keeping it closed, take a deep breath, swiftly put my head in and close it with the draw strings. Then (while still holding my breath) i will quickly put a belt around the bag and my neck to keep in extra secure and after all of this is done, I will inhale as much air as I possibly can and hopefully pass out? Hopefully I will pass out in 10seconds< of taking very deep breaths and in turn die after fainting but I have a few questions.

Questions-
I would love to look these up on google but Im having much luck on the web so im here to see if you guys know.

1.) quantity.
Will a box of baking soda and how ever much vinegar it needs to be fully saturated enough? If not how much soda will I need to fill the bag with enough to pass out very quickly?

2.) pain.
After doing so many ridiculously painful methods to no avail, I am desperately looking for one that is realitivly painless but is extremely fast like less than a minute (to pass out at least ). How painful and quick will this generally be and what should I expect the feeling to be like?

3.) likely hood.
Is this actually going to make me pass out quickly and will I die? I understand that some people take the bag off when they're unconscious but other than that would this work if we ignore that possibility? Because I think I know how I can avoid that from being an issue.


4.) time until death (where resesitation is unlikely to impossible.
Lastly I want to know how long after passing out it will take me to actually die and at a point where I wont have to worry about paramedics saving me or like cpr. Although I understand that theres no exsact way to know, are we looking at like 5-10mins, 30-40mins or like 50< mins?

Thank you so much for reading this and if you know the answers to my questions please answer I really need help.
Also if there's anything wrong with this or something that I can improve with the same materials please lmk I only have 2weeks until I absolutely need to cbt I am so desperate to find the answers to my questions.

extra background about the H2S situation [skip able]
I mentioned it earlier in this post and ive made two other posts about this similar method but with FeS and HCl but I decided that I needed to find a better way because if I did manage to live or if something goes wrong etc etc, I dont want to A, leave a huge very noticeable bio hazard behind and B, I dont want to come back home smelling potentially of rotten eggs because that would be very bad. So in turn I thought about this method as CO2 isnt as dangerous and it also does reak of a horrible stench that sticks to you and your clothes.

Thank you for reading all of this have a great day and again, if you have any answers please lmk.

Bump.

Curious if the OP was still around.
 
N

noidea1984

Member
Jan 14, 2025
62
But do you know how quickly youd pass out? If its only like 10 seconds it probably wouldnt be too bad
You would probably need a ridiculously high concentration in order to pass out within seconds, so chances are you wouldn't get far
 
W

wham311

Enlightened
Mar 1, 2025
1,201
That is true when CO2 is either gradually increased from base level but when suddenly inhaling carbon dioxide levels of 90% ppm < it overwhelms your system and although it might be uncomfortable fainting can be expected in a matter of seconds to a minute if done correctly.
I did way more research on how to do it properly with the exact amount of ingredients needed to make it a fast and generally tolerable method. I may make a final post on it as an instruction before i do it myself.
Can you please post the method
 
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locked*n*loaded

locked*n*loaded

Archangel
Apr 15, 2022
9,356
If one could afford it, it would be easier, and probably more effective, to just purchase a tank of CO2. I doubt it's very pleasant or peaceful, even if unconsciousness comes relatively quickly.
 
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UltimateTrip

UltimateTrip

Member
Jul 12, 2023
55
I think, this method is likely to be substantially worse than H2S poisoning in terms of discomfort/distress and reliability.

From the article, page 36:

"Hornett and Haynes (1984) compared CO2 and nitrogen in rats and concluded that CO2 was the preferred euthanasia method. CO2 from a gas cylinder was gradually induced and behaviours measured included perceived signs of fear (behaviours were not specified) and oxygen deprivation, as well as laboured breathing, loss of co-ordination and balance, collapse (correlated with unconsciousness) and respiratory arrest. Overall, the rats had an extreme response to nitrogen including panic, attempts to escape and convulsions, while CO2 caused increased 'nasal movement' and a stage of laboured breathing. The authors concluded that CO2 at 19.5% chamber volume per minute achieved a quiet delivery into unconsciousness".

Effects on rats and humans will differ. For example, while for humans nitrogen is among the best euthanasia methods it seems like it's not the case for rats. The article is interesting but I don't think that it can provide a fair opinion about effectiveness and peacefulness of CO2 for humans. Other sources state that for humans a 30%+ concentration of CO2 will cause loss of consciousness in seconds.

Also, the authors of the article state that the pieces of research that the article is based on provide conflicting results.

Also, vinegar doesn't look like a wise choice, since acetic acid is a volatile irritant. Citric acid should be a better reagent.

Citric acid is definitely better than vinegar.
 
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Intoxicated

Intoxicated

MIA Man
Nov 16, 2023
1,063
From the article, page 36:

"Hornett and Haynes (1984) compared CO2 and nitrogen in rats and concluded that CO2 was the preferred euthanasia method. CO2 from a gas cylinder was gradually induced and behaviours measured included perceived signs of fear (behaviours were not specified) and oxygen deprivation, as well as laboured breathing, loss of co-ordination and balance, collapse (correlated with unconsciousness) and respiratory arrest. Overall, the rats had an extreme response to nitrogen including panic, attempts to escape and convulsions, while CO2 caused increased 'nasal movement' and a stage of laboured breathing. The authors concluded that CO2 at 19.5% chamber volume per minute achieved a quiet delivery into unconsciousness".

Effects on rats and humans will differ.
When referencing that document, I had this part of it in mind:
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UltimateTrip

UltimateTrip

Member
Jul 12, 2023
55
The test subjects were asked to take a single breath. Some people here who tested CO2 on themselves said that the initial sensations were unpleasant and even painful. But they didn't last long. With a high enough concentration that could last only for a few moments before LOC.

Of course, an inert gas would be a better choice and I would go for it if I could afford it. But CO2 option is very accessible, if done correctly the discomfort is very short-lasting. The only real problem I see with it is that if for whatever reason the attempt fails after some damage has been done (to lungs and other organs) that would suck. But that is true for every other method too.
 
Intoxicated

Intoxicated

MIA Man
Nov 16, 2023
1,063
Of course, an inert gas would be a better choice and I would go for it if I could afford it.
If you delve deeply into the subject of simple asphyxiants, you can notice much cheaper solutions than the ones commonly promoted on this forum. Basically, all you need to successfully CTB with a simple asphyxiant without having significant discomfort is to:

1) choose a gas that is not especially unpleasant to inhale (f.e., propane, butane, R134a, N₂O),
2) ensure that the concentration of O₂ in the breathed mixture is below 6%,
3) ensure that the CO₂ level in the bloodstream does not reach critical levels before LOC (easily done via hyperventilation and making low O₂ concentration in the inhaled mixture).

As long as you don't allow adding more than 25 - 28% air to your non-irritating and nearly oxygen-free asphyxiant gas, you're good. Constant flow of the gas can be handy for this, but it's unnecessary. People died with completely sealed bags on their heads as well.


I'm inclined to use N₂O (from cream chargers), because it is relatively cheap and easily accessible in my country, has no unpleasant odor, can be used to relax and get high, has an additional sedative effect and the proven ability to mitigate the symptoms of dispnea from high CO₂ levels.
But CO2 option is very accessible
Yes, that's a big advantage.
if done correctly the discomfort is very short-lasting.
It's also more easy to do correctly than my favourite N₂O asphyxiation method, because you're allowed to add up to 70% air to CO₂ without serious troubles with effectiveness of the attempt. Asphyxiation with simple asphyxiants is not so forgiving with regard to adding extra air to them.
 
UltimateTrip

UltimateTrip

Member
Jul 12, 2023
55
If you delve deeply into the subject of simple asphyxiants, you can notice much cheaper solutions than the ones commonly promoted on this forum. Basically, all you need to successfully CTB with a simple asphyxiant without having significant discomfort is to:

You're right, I haven't researched all the possible asphyxiants and might want to dive deeper into the topic.

As long as you don't allow adding more than 25 - 28% air to your non-irritating and nearly oxygen-free asphyxiant gas, you're good. Constant flow of the gas can be handy for this, but it's unnecessary. People died with completely sealed bags on their heads as well.

I wasn't even considering constant flow setups due costs and volumes of gas needed. If I go this route it will be a sealed bag method.

I'm inclined to use N₂O (from cream chargers), because it is relatively cheap and easily accessible in my country, has no unpleasant odor, can be used to relax and get high, has an additional sedative effect and the proven ability to mitigate the symptoms of dispnea from high CO₂ levels.

They are accessible in my country too. But I don't have a water siphon or a cream machine and they are out of my budget. I wanted to buy a pack of chargers just to test the effects of the gas but I don't know how I would inflate a bag or a balloon only using the household items that I already have at my disposal. If you know a method or a trick to do that, please let me know.

It's also more easy to do correctly than my favourite N₂O asphyxiation method, because you're allowed to add up to 70% air to CO₂ without serious troubles with effectiveness of the attempt. Asphyxiation with simple asphyxiants is not so forgiving with regard to adding extra air to them.

True... Do you think it would be possible to take 1-2 full deep breaths of N2O and while still conscious seal a bag over the head, hopefully pass out and die from CO2 that will gradually accumulate in the bag? That's what I wanted to try if I knew how to use a charger without a specialized device.

P.S. Thank you for your time and replies! 🙏
 
Intoxicated

Intoxicated

MIA Man
Nov 16, 2023
1,063
But I don't have a water siphon or a cream machine and they are out of my budget.
Cheapest dispensers/siphons should cost approximately $20 - $30. There are also small crackers for $10 - $13 like these - Cream Bottle Opener

View attachment NOS cracker.mp4

They may work for CO₂ soda chargers as well, because those have the same shape and size as N₂O cream chargers.
I wanted to buy a pack of chargers just to test the effects of the gas but I don't know how I would inflate a bag or a balloon only using the household items that I already have at my disposal. If you know a method or a trick to do that, please let me know.
It's possible to break the seal of a charger with a nail, but this method seems risky, and you'd lose a lot of gas when using it.

View attachment Cracking N2O charger.mp4
Do you think it would be possible to take 1-2 full deep breaths of N2O and while still conscious seal a bag over the head, hopefully pass out and die from CO2 that will gradually accumulate in the bag?
If the bag is not filled with N₂O before you place it over the head, then that doesn't look like a good strategy, because it would likely contain some amount of air that could suffice to make you regain consciousness. If the budget is very limited, it would make sense to consider something like air dusters containing propane-butane mixtures. There are very cheap cans, and they typically contain enough gas to do a few blackout tests and fill a large bag for CTB.
 
UltimateTrip

UltimateTrip

Member
Jul 12, 2023
55
Thank you for the links and advice!

Cheapest dispensers/siphons should cost approximately $20 - $30. There are also small crackers for $10 - $13 like these - Cream Bottle Opener

That cream bottle opener is a nice device, thanks! All I have is $100 or so. That has to support me for until I can get a social payment, in 3 or 4 weeks, lol. Or I CTB before that.

It's possible to break the seal of a charger with a nail, but this method seems risky, and you'd lose a lot of gas when using it.

Yeah, that is definitely not a good method.

If the bag is not filled with N₂O before you place it over the head, then that doesn't look like a good strategy, because it would likely contain some amount of air that could suffice to make you regain consciousness. If the budget is very limited, it would make sense to consider something like air dusters containing propane-butane mixtures. There are very cheap cans, and they typically contain enough gas to do a few blackout tests and fill a large bag for CTB.

One could regain consciousness but that would not be the most terrible failed attempt. I need to learn more about propane, butane and other possible variants. Luckily I have SN already. I was just looking for a method that would lead to a faster LOC, like 3 or 4 seconds instead of 30 minutes, give or take.

Anyway, thank you for the information and advice, my friend! 🙏
 
H

hell toupee

Experienced
Sep 9, 2024
262
Cheapest dispensers/siphons should cost approximately $20 - $30. There are also small crackers for $10 - $13 like these - Cream Bottle Opener

View attachment 182980

They may work for CO₂ soda chargers as well, because those have the same shape and size as N₂O cream chargers.

It's possible to break the seal of a charger with a nail, but this method seems risky, and you'd lose a lot of gas when using it.

View attachment 182982

If the bag is not filled with N₂O before you place it over the head, then that doesn't look like a good strategy, because it would likely contain some amount of air that could suffice to make you regain consciousness. If the budget is very limited, it would make sense to consider something like air dusters containing propane-butane mixtures. There are very cheap cans, and they typically contain enough gas to do a few blackout tests and fill a large bag for CTB.

I completely agree with your posts in this thread.

So many people have this pseudo-scientific response when they hear the word "CO2", and they all claim that it would be impossible to keep the bag over your head - implying you will rip it off instantly.

What these people are referring to is scenarios where someone puts a plastic bag over their heads and CO2 gradually starts increasing. Gradually being the key word. However, if you were instantly exposed to a high concentration of CO2, all available information is that consciousness is lost very rapidly. Like within just a few breaths.

These people are comparing apples to oranges. Low, slowly increasing CO2 is most certainly going to induce panic. High concentrations don't even give you a chance to panic.

I do have a question for you though. If someone were to hook a N20 cylinder up to a pressure regulator that feed via tubing an oxygen mask, would this induce unconsciousness? I know dentists mix oxygen and N2O, however I am talking about continuously breathing in N20. Would this cause unconsciousness? Because if it does, you could simply combine this with a plastic bag over your head that insures you ctb, and at the very least, you would suffocate while unconscious.

Another question in regards to a CO2 charger, like the little canisters that are for home soda making - similar to small N20 chargers, wouldn't it be really short duration of gas emitted?
 
Intoxicated

Intoxicated

MIA Man
Nov 16, 2023
1,063
So many people have this pseudo-scientific response when they hear the word "CO2", and they all claim that it would be impossible to keep the bag over your head - implying you will rip it off instantly.
Even if it worked so, there probably would be no negative sequelae from a failed attempt (it's likely much safer than failing in SN poisoning). Some people just don't want to admit that they have suicidal thoughts without actually strong motives to die, and then even minor inconveniences can make them back out. Recently I witnessed complaints about nitrogen asphyxiation being not peaceful enough because it causes face numbness and tingling sensations in the skin which appear in a near-blackout state.


It's hard for me to see serious intentions behind "wanting to die" when a slight deviation from some ideal picture of CTB is viewed as an issue.
However, if you were instantly exposed to a high concentration of CO2, all available information is that consciousness is lost very rapidly. Like within just a few breaths.
It's also worth noting that the sense of suffocation would not be perceived for that entire period before loss of consciousness. It would likely appear a few seconds after inhalation of CO₂ has started and disappear a few seconds before complete blackout is achieved.
These people are comparing apples to oranges. Low, slowly increasing CO2 is most certainly going to induce panic. High concentrations don't even give you a chance to panic.
I think, some anxiety may occur in either case, but with a high CO₂ concentration the duration of the anxious state is very limited, that makes coping with it much easier, since there is no cumulative effect of stressful factors over a long period of time.
I do have a question for you though. If someone were to hook a N20 cylinder up to a pressure regulator that feed via tubing an oxygen mask, would this induce unconsciousness?
As long as the concentration of N₂O is 70% or above and the concentration of air is 30% or below, there should be no problems with inducing unconsciousness.
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This differs from permissible proportions of CO₂ to air when CO₂ poisoning is used to induce unconsciousness, that is approximately ≥30% CO₂ and ≤70% air.

Time to loss of consciousness (which corresponds to the 2nd stage of anesthesia) from N₂O/air mix is smaller than the values mentioned above for the 3rd stage of anesthesia (which is appropriate for commencing surgical operations). In my experiments, 30 - 40 seconds were enough to induce unconsciousness.
Because if it does, you could simply combine this with a plastic bag over your head that insures you ctb, and at the very least, you would suffocate while unconscious.
That's exactly my plan.
Another question in regards to a CO2 charger, like the little canisters that are for home soda making - similar to small N20 chargers, wouldn't it be really short duration of gas emitted?
Not sure what you mean. Both CO₂ and N₂O chargers typically contain about 8g of liquified gas that occupies about 4 liters after evaporation and expansion at the pressure of 1 atm. If you use a siphon/dispenser as a device for cracking such chargers, the procedure of releasing the gas from a single charger takes a few seconds. I think, 2 CO₂ chargers or 5 N₂O chargers together with a plastic bag of a proper size and tape for sealing the bag should suffice for successful loss of consciousness within 20 - 40 seconds (after inhalation of the gas has started) and CTB.
 
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H

hell toupee

Experienced
Sep 9, 2024
262
Even if it worked so, there probably would be no negative sequelae from a failed attempt (it's likely much safer than failing in SN poisoning). Some people just don't want to admit that they have suicidal thoughts without actually strong motives to die, and then even minor inconveniences can make them back out. Recently I witnessed complaints about nitrogen asphyxiation being not peaceful enough because it causes face numbness and tingling sensations in the skin which appear in a near-blackout state.


It's hard for me to see serious intentions behind "wanting to die" when a slight deviation from some ideal picture of CTB is viewed as an issue.

It's also worth noting that the sense of suffocation would not be perceived for that entire period before loss of consciousness. It would likely appear a few seconds after inhalation of CO₂ has started and disappear a few seconds before complete blackout is achieved.

I think, some anxiety may occur in either case, but with a high CO₂ concentration the duration of the anxious state is very limited, that makes coping with it much easier, since there is no cumulative effect of stressful factors over a long period of time.

As long as the concentration of N₂O is 70% or above and the concentration of air is 30% or below, there should be no problems with inducing unconsciousness.
[Hidden content]
This differs from permissible proportions of CO₂ to air when CO₂ poisoning is used to induce unconsciousness, that is approximately ≥30% CO₂ and ≤70% air.

Time to loss of consciousness (which corresponds to the 2nd stage of anesthesia) from N₂O/air mix is smaller than the values mentioned above for the 3rd stage of anesthesia (which is appropriate for commencing surgical operations). In my experiments, 30 - 40 seconds were enough to induce unconsciousness.

That's exactly my plan.

Not sure what you mean. Both CO₂ and N₂O chargers typically contain about 8g of liquified gas that occupies about 4 liters after evaporation and expansion at the pressure of 1 atm. If you use a siphon/dispenser as a device for cracking such chargers, the procedure of releasing the gas from a single charger takes a few seconds. I think, 2 CO₂ chargers or 5 N₂O chargers together with a plastic bag of a proper size and tape for sealing the bag should suffice for successful loss of consciousness within 20 - 40 seconds (after inhalation of the gas has started) and CTB.

Thanks so much for the replies. This information was really needed, as I was torn between going to CO2 method or N20. All I really need is something that will induce unconsciousness. I would prefer N2O, as it would obviously be more pleasant than CO2 poisoning. My plan. as stated, was to feed an oxygen mask with 100% CO2 or N2O. A plastic bag over my head and the mask will insure I do not survive because I absolutely cannot fail.

So, just to be clear, you were able to induce unconsciousness with N2O after 30-40 seconds of breathing in N20? What concentration would you say it was? 100% N2O? Because if unconsciousness is reliable, I will absolutely go the N2O route. The nice thing here is if something goes awry, you simply pull the bag/mask off your head.
 
Intoxicated

Intoxicated

MIA Man
Nov 16, 2023
1,063
So, just to be clear, you were able to induce unconsciousness with N2O after 30-40 seconds of breathing in N20? What concentration would you say it was? 100% N2O?
When I made a single maximally deep breath of N₂O from a balloon after some hyperventilation (with plain air) and then held my breath, blackout was achieved in about 35 - 40 s. When I inhaled the gas from a garbage bag placed over the head without exhaling maximum air from the lungs beforehand, LOC occurred in about 25 - 30 s. The bag was suspended so that my head would fall out of it due to the gravity force in case if I wouldn't release the head consciously (I actually was able to do this a few seconds before fainting).

The manufacturer of my chargers claims the purity of 99.95%. Of course, in either case, my lungs contained some residual air plus oxygen coming backwards from the bloodstream to the lungs space, so N₂O was inevitably diluted there to some extent. When placing the bag over the head, some amount of air goes inside the bag from outside, so this step has to be done very carefully.

If maximum volume of air is exhaled from the lungs and then a bag with a sufficiently large volume of asphyxiant is placed over the head with a proper care, getting less than 25% air inside looks entirely feasible. The experimentally determined speed of LOC supports this estimation.
 
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hell toupee

Experienced
Sep 9, 2024
262
When I made a single maximally deep breath of N₂O from a valloon after some hyperventilation (with plain air) and then held my breath, blackout was achieved in about 35 - 40 s. When I inhaled the gas from a garbage bag placed over the head without exhaling maximum air from the lungs beforehand, LOC occurred in about 25 - 30 s. The bag was suspended so that my head would fall out of it due to the gravity force in case if I wouldn't release the head consciously (I actually was able to do this a few seconds before fainting).

The manufacturer of my chargers claims the purity of 99.95%. Of course, in either case, my lungs contained some residual air plus oxygen coming backwards from the bloodstream to the lungs space, so N₂O was inevitably diluted there to some extent. When placing the bag over the head, some amount of air goes inside the bag from outside, so this step has to be done very carefully.

If maximum volume of air is exhaled from the lungs and then a bag with a sufficiently large volume of asphyxiant is placed over the head with a proper care, getting less than 25% air inside looks entirely feasible. The experimentally determined speed of LOC supports this estimation.

Thanks so much for the response. My remaining concern is how long would you stay unconscious assuming one would fill a garbage bag with N2O, then secure it over the head? Would that be enough to remain unconscious and ctb? Or do you think you would need a continuous supply using a regulator? Obviously depends on how big the bag is and how much N2O you put in to it.

I think I will go with this instead of CO2. The above being my only remaining concern. I just want to make sure there is no possibility of survival. I have done several months of due diligence and want to insure ctb, hence incorporating a plastic bag, or larger trash bag with any method I choose. I don't want the N2O to knock me out, and then as I start to asphyxiate, I am woken back up. Is the loss pf consciousness with N2O due to displacement of oxygen? In other words cerebral hypoxia?

Thanks again.
 
TheEmptyVoid

TheEmptyVoid

Experienced
Jun 18, 2025
281
When I made a single maximally deep breath of N₂O from a balloon after some hyperventilation (with plain air) and then held my breath, blackout was achieved in about 35 - 40 s. When I inhaled the gas from a garbage bag placed over the head without exhaling maximum air from the lungs beforehand, LOC occurred in about 25 - 30 s. The bag was suspended so that my head would fall out of it due to the gravity force in case if I wouldn't release the head consciously (I actually was able to do this a few seconds before fainting).

The manufacturer of my chargers claims the purity of 99.95%. Of course, in either case, my lungs contained some residual air plus oxygen coming backwards from the bloodstream to the lungs space, so N₂O was inevitably diluted there to some extent. When placing the bag over the head, some amount of air goes inside the bag from outside, so this step has to be done very carefully.

If maximum volume of air is exhaled from the lungs and then a bag with a sufficiently large volume of asphyxiant is placed over the head with a proper care, getting less than 25% air inside looks entirely feasible. The experimentally determined speed of LOC supports this estimation.
It's really hard to make the air not enter the bag when putting a bag filled with gas with no oxygen onto your head and sealing it, so I just put a bag around my head with no air inside, and before sealing it, I put a straw in the empty bag with no air inside around my head with another bag but instead of being empty, It's filled with gas with no oxygen, and I squeeze the bag to force the gas with no oxygen into the empty bag around my head with no air inside the bag around my head, and then I seal the bag around my neck to keep the gas contained around my head, I obviously will exhale completely and then empty the bag around my head of air to push it out, and then put the gas with no oxygen inside the bag around my head, and then I will zip tie my hands and legs to make sure I don't remove them while I'm unconscious, do you think my method I will use sounds painless and 100% guaranteed fatal, if no one saves me?
 
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Battered_Seoul

Experienced
Jun 13, 2018
291
From a motorskills perspective, how much room for error is there in the bag-sealing phase?

Zip ties appear obligatory to me. Maybe physical panic can be mitigated, but the mind i understands what is going on and will react, quickly.
 
Intoxicated

Intoxicated

MIA Man
Nov 16, 2023
1,063
Would that be enough to remain unconscious and ctb?
Regaining consciousness is unlikely because

1) after consciousness is lost, blood oxygen saturation keeps dropping further due to elimination of oxygen through the lungs and consuming oxygen by the body,
2) N₂O has additional sedative effect besides causing hypoxia via asphyxiation.

The volume of N₂O inside the bag will slightly decrease over time, because some amount of the gas will be dissolved in blood plasma and accumulated in tissues, but this shouldn't result in substantial loss.
Or do you think you would need a continuous supply using a regulator?
That might help with increasing the N₂O concentration and decreasing the O₂ concentration inside the bag, but the given technique introduces other challenges. You'd need to set an optimal flow rate and ensure the integrity of the whole setup in case of possible uncontrollable body movements. I'd rather prefer non-ventilated setup because of its simplicity, keeping in mind that people actually died with non-ventilated bags filled with N₂O or He.
Obviously depends on how big the bag is and how much N2O you put in to it.
Yeah, mine is approximately 60 cm x 60 cm (in the fully deflated state), and it seems large enough.
Is the loss pf consciousness with N2O due to displacement of oxygen? In other words cerebral hypoxia?
Firstly, oxygen is displaced from the lungs, and this makes the concentration and partial pressure of O₂ significantly reduced there. Low partial pressure of O₂ makes the lungs to work in a somewhat inverse mode - instead of taking oxygen from air inside the lungs' space and attaching it to hemoglobin in the bloodstream, the alveoli take oxygen from hemoglobin and release it into the lungs' space. As a result, blood oxygen saturation drops, and when it becomes insufficient for maintaining consciousness, fainting occurs. Consuming oxygen by the body is also a contributing factor in producing hypoxia, but this process depletes oxygen reserves much slower than elimination of oxygen through the lungs during the first seconds of using the aforementioned techniques of gas asphyxiation.

It's really hard to make the air not enter the bag when putting a bag filled with gas with no oxygen onto your head and sealing it
Fortunately, rapid loss of consciousness is known to occur when the O₂ concentration in the breathed gas mixture is ≤6%, that allows us to add up to ~28% of air to a simple asphyxiant without compromising the effectiveness of gas asphyxiation. Since N₂O has an additional sedative effect, it may successfully induce unconsciousness with slightly higher proportions of air than plain inert gases like N₂.
so I just put a bag around my head with no air inside, and before sealing it, I put a straw in the empty bag with no air inside around my head with another bag but instead of being empty, It's filled with gas with no oxygen, and I squeeze the bag to force the gas with no oxygen into the empty bag around my head with no air inside the bag around my head, and then I seal the bag around my neck to keep the gas contained around my head, I obviously will exhale completely and then empty the bag around my head of air to push it out, and then put the gas with no oxygen inside the bag around my head, and then I will zip tie my hands and legs to make sure I don't remove them while I'm unconscious, do you think my method I will use sounds painless and 100% guaranteed fatal, if no one saves me?
I presume, that might work with relatively small bags, but pumping relatively large volumes of gas (like 15 liters or more) from one bag to another could be quite challenging, considering that you have to do this procedure while having a bag on the head and holding breath (in order to avoid premature LOC before sealing is done). I thought about this method before, and it seems unnecessarily complicated for me.
From a motorskills perspective, how much room for error is there in the bag-sealing phase?
Deaths occurred even without purposeful sealing. For example, see this NSFW link.
 
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