Carbon dioxide Asphyxiation

[Battered_Seoul]

So at the moment, I have a relatively simple set up.

-A canvas fabric bag with a drawstring toggle.
- 2x20 Litre trash bags that I have taped around the inside of the canvas bag to create an extra less permeable inner layer.
- A 2.3kg carbon dioxide fire extinguisher

The plan is discharge the extinguisher into the trash bags in a series of 3 or 4 very short bursts, seal the canvas bag, wait a minute or so for the CO2 concentration to equalize, then place my head inside quickly while sealing the drawstring tightly.

I'm wagering that the concentration will be so high that it will lead to quick unconsciousness.

Comments or critiques welcome.

 

[Worndown]

I would guess this will fail. Opening the bag will release some gas. That could lower the concentration to a survivable level.

 

[bland_mammal]

Carbon dioxide asphyxiation is uncomfortable. Carbon monoxide, helium, or other inert gas asphyxiation may be better.

 

[FuneralCry]

I wish you the best, I hope that you find what you are searching for.

 

[maniac116]

Carbon dioxide in the lungs is exactly what triggers SI. It triggers the "out of breath" feelings, and the body then kicks in gear, doing anything to get oxygen.
It would very really traumatic & almost assured failure. Bad idea in my opinion.

 

[CantDoIt]

My thing with this is that you're supposed to be able to immediately pass out if the CO2 is high enough. This is the idea with the formic and sulfuric acid mix and it's also the idea here. In this case I think the gas would leak out but the idea of using CO2 like this isn't necessarily bad.
My thing with this is that you're supposed to be able to immediately pass out if the CO2 is high enough. This is the idea with the formulaic and sulfuric acid mix and it's also the idea here. In this case I think the gas would leak out but the idea of using CO2 like this isn't necessarily bad.

 

[Intoxicated]

My thing with this is that you're supposed to be able to immediately pass out if the CO2 is high enough. This is the idea with the formulaic and sulfuric acid mix and it's also the idea here. In this case I think the gas would leak out but the idea of using CO2 like this isn't necessarily bad.

What is "immediate"? ) How much is that in seconds? Like 1 second, 5 seconds, 10 seconds, or more?

I wouldn't expect CO2 working much faster than plain gas asphyxiation. The best time to LOC is probably ~15 seconds if you hyperventilate, and it could be 30 - 40 seconds if your breaths happen with a normal depth and at a normal rate.

At least, we can see that rats do not cease to move within just 5 - 10 seconds after their environment is filled with high-concentrated CO2





It would be interesting to look at human response to CO2.

 

[CantDoIt]

What is "immediate"? ) How much is that in seconds? Like 1 second, 5 seconds, 10 seconds, or more?

I wouldn't expect CO2 working much faster than plain gas asphyxiation. The best time to LOC is probably ~15 seconds if you hyperventilate, and it could be 30 - 40 seconds if your breaths happen with a normal depth and at a normal rate.

At least, we can see that rats do not cease to move within just 5 - 10 seconds after their environment is filled with high-concentrated CO2





It would be interesting to look at human response to CO2.

It would definitely be interesting. Nitrogen or helium are more reliable when it comes to peaceful ctb, but more difficult to source. I wanted to possibly try a method using citric acid and baking soda and it seems like this is a method that others have used...but did they just withstand the feeling of not being able to breath? Maybe partial is better but I haven't been able todo it very well.

 

[Intoxicated]

Nitrogen or helium are more reliable when it comes to peaceful ctb, but more difficult to source. I wanted to possibly try a method using citric acid and baking soda and it seems like this is a method that others have used...but did they just withstand the feeling of not being able to breath? Maybe partial is better but I haven't been able todo it very well.

I'd rather use nitrous oxide. It's not too expensive, doesn't cause pain or any significant discomfort, and should be quite effective for producing unconsciousness and death.

Nitrous Oxide Facts - Compressed Gas Association

Nitrous oxide (N2O) is a clear, colorless, oxidizing liquefied gas with a slightly sweet odor. The product is stable at room temperature. We discuss the facts about N2O in this article.

www.cganet.com

 

[Battered_Seoul]

I'd rather use nitrous oxide. It's not too expensive, doesn't cause pain or any significant discomfort, and should be quite effective for producing unconsciousness and death.

Nitrous Oxide Facts - Compressed Gas Association

Nitrous oxide (N2O) is a clear, colorless, oxidizing liquefied gas with a slightly sweet odor. The product is stable at room temperature. We discuss the facts about N2O in this article.

www.cganet.com

Sadly, nitrous oxide is quite strictly regulated here.

All comments appreciated. I recall something mentioned regarding the citric acid/baking soda method relating to creating the reaction in a plastic bottle and feeding it into a trash bag.

I think that might work quite well with the inner trash bag/outer drawstring bag set up as it could fit quite snugly over the bottle and is definitely more discreet than discharging a fire extinguisher.

 

[Intoxicated]

Sadly, nitrous oxide is quite strictly regulated here.

Even in whippets / cream chargers for making whipped cream? Technically, it's possible to make it like CO2, just using different reagents. Mixing water solutions of sodium nitrite and hydroxylamine hydrochloride (hydroxylammonium chloride) is probably one of the best methods in terms of simplicity and safety

NaNO2 + NH2OH*HCl = N2O + NaCl + 2 H2O

Another possible way is mixing 73+% nitric acid and sulfamic acid

HNO3 + H2NSO3H = N2O + H2SO4 + H2O

Concentrated sulfuric acid can accelerate this reaction.

 

[Battered_Seoul]

Even in whippets / cream chargers for making whipped cream? Technically, it's possible to make it like CO2, just using different reagents. Mixing water solutions of sodium nitrite and hydroxylamine hydrochloride (hydroxylammonium chloride) is probably one of the best methods in terms of simplicity and safety

NaNO2 + NH2OH*HCl = N2O + NaCl + 2 H2O

Another possible way is mixing 73+% nitric acid and sulfamic acid

HNO3 + H2NSO3H = N2O + H2SO4 + H2O

Concentrated sulfuric acid can accelerate this reaction.

Thanks to feedback, I've revised method.

Snug mummy sleeping bag with low internal air volume once occupied
Washing up bowl
Citric acid and baking soda powder mixed evenly in bowl.

I'll sit up in the bag and add water to the mixture. Hopefully, it will create 50 to 100L quickly, enough to overwhelm the free air volume in the bag.

Should be discreet and the elements are portable.

 

[NegevChina]

Thanks to feedback, I've revised method.

Snug mummy sleeping bag with low internal air volume once occupied
Washing up bowl
Citric acid and baking soda powder mixed evenly in bowl.

I'll sit up in the bag and add water to the mixture. Hopefully, it will create 50 to 100L quickly, enough to overwhelm the free air volume in the bag.

Should be discreet and the elements are portable.

I just read this article about CO2 euthanasia. It considers human response in comparison to animals response. When CO2 concentration is close to 100% time to pass out is about 10 seconds. It is not painless. So this needs to be taken into consideration. The article is kind of long:
https://journals.sagepub.com/doi/pdf/10.1258/0023677053739747

 

[CantDoIt]

I just read this article about CO2 euthanasia. It considers human response in comparison to animals response. When CO2 concentration is close to 100% time to pass out is about 10 seconds. It is not painless. So this needs to be taken into consideration. The article is kind of long:
https://journals.sagepub.com/doi/pdf/10.1258/0023677053739747

Yeah I'm thinking this will be too long especially if most people were unable to take a full breath. Having to last 10 seconds sounds rough.

 

[NegevChina]

Yeah I'm thinking this will be too long especially if most people were unable to take a full breath. Having to last 10 seconds sounds rough.

May be if there was an optimal percentage of CO2. I mean some people just pass out at around 30% with out to much suffering but takes longer time. it says A linear relationship was found between CO2 concentration and pain sensation. Average individual tolerance thresholds ranged from 40% to 55% CO2.

 

[CantDoIt]

May be if there was an optimal percentage of CO2. I mean some people just pass out at around 30% with out to much suffering but takes longer time. it says A linear relationship was found between CO2 concentration and pain sensation. Average individual tolerance thresholds ranged from 40% to 55% CO2.

Wonder if I should try it or just buy some whipped cream chargers and do nitrous oxide.

 

[NegevChina]

Wonder if I should try it or just buy some whipped cream chargers and do nitrous oxide.

If these two methods are combined could be interesting.

 

[CantDoIt]

Even in whippets / cream chargers for making whipped cream? Technically, it's possible to make it like CO2, just using different reagents. Mixing water solutions of sodium nitrite and hydroxylamine hydrochloride (hydroxylammonium chloride) is probably one of the best methods in terms of simplicity and safety

NaNO2 + NH2OH*HCl = N2O + NaCl + 2 H2O

Another possible way is mixing 73+% nitric acid and sulfamic acid

HNO3 + H2NSO3H = N2O + H2SO4 + H2O

Concentrated sulfuric acid can accelerate this reaction.

Do you know if you need to buy the tool that opens the whippets in order to open them?

 

[userharsh]

This is painful use nitrogen or carbon monoxide

 

[losi]

Even in whippets / cream chargers for making whipped cream? Technically, it's possible to make it like CO2, just using different reagents. Mixing water solutions of sodium nitrite and hydroxylamine hydrochloride (hydroxylammonium chloride) is probably one of the best methods in terms of simplicity and safety

NaNO2 + NH2OH*HCl = N2O + NaCl + 2 H2O

Another possible way is mixing 73+% nitric acid and sulfamic acid

HNO3 + H2NSO3H = N2O + H2SO4 + H2O

Concentrated sulfuric acid can accelerate this reaction.

i have SN and can also buy NH2OH*HCl, do you know where more info is available? like how much grams of each should be mixed?

 

[Intoxicated]

If these two methods are combined could be interesting.

N2O alone should be quite good. A mixture of 5% oxygen with 95% nitrogen can produce a strong anesthetic effect (that is sufficient for extraction of teeth) in less than 2 minutes (see https://i.sanctioned-suicide.net/images/2024/12/215946_N2O_-_BRITISH_JOURNAL_OF_ANAESTHESIA.pdf page 956). Nitrous oxide potentiates the anesthetic effect of hypoxia, so it should work faster than nitrogen. Even 12.5% O2 / 87.5% N2O mixture is likely to produce anesthesia in less than 3 minutes. If you hyperventilate before and during breathing with N2O, this should be enough for avoiding any discomfort from inhaling expelled CO2 accumulated in a sealed bag.

Do you know if you need to buy the tool that opens the whippets in order to open them?

Yes, it would be hard to release N2O from those small cartridges without using a special tool like a cracker or a cream dispenser (whipping siphon). Cheap chinese dispensers cost nearly $20-30.

Whipped-cream charger - Wikipedia

en.wikipedia.org

You can also search for relevant videos on the Drugslab YT channel.

i have SN and can also buy NH2OH*HCl, do you know where more info is available? like how much grams of each should be mixed?

You'd need approximately 100g of NaNO2 and 100g of NH2OH*HCl to produce 25 - 30 liters of N2O. According to some sources, the produced gas may contain toxic NO2, so inhaling it recreationally would probably be a bad idea. It can be suitable for CTB though.

The process of making N2O is not as easy as for CO2 (see

Spoiler

for the details). Using this could make sense if you have fun from doing such things. If you can obtain cream chargers with a dispenser, it would be better to use them instead, because they're likely to contain more pure N2O than you can produce from chemicals.

 

[Battered_Seoul]

Currently thinking about discharging in a 200 or 300L HDPE container with a lid.

Perhaps significantly more airtight than a sleeping bag.