Method Nitrous oxide as a method?

[BrainSplatter]

I'm struggling to find SN so want to look into other potential methods and educate myself in case I never manage to get any. Nitrous oxide, I can get this easily on the clearnet you can get it in 2000g canisters and it comes with a pressure release nozzle. I've used it recreationally so maybe I would need more than someone who's never used it. I've seen a lot more in the news that people are actually dying from this I'm not sure if that's just because of long-term use, but I'm more hopeful that would work. Helium and Nitrogen I've also looked at and a lot of the canisters now are being mixed with oxygen. Making it unlikely that I'd actually die from it I'd probably just get severe brain damage then just being a vegetative state unable to try again. I'm not sure if they would be mixed with any oxygen. It just says for catering purposes. Would it be possible or would I need a medical grade?

 

[Intoxicated]

I'm not sure if they would be mixed with any oxygen. It just says for catering purposes.

Culinary N₂O is typically stored as a liquid under pressure (it occupies a significantly smaller space than pressurized gaseous N₂O would). Trying to add oxygen to liquid N₂O wouldn't make much sense (they simply wouldn't mix well). It's possible to create a mixture of gaseous N₂O and O₂ like medical Entonox/Nitronox, but it would occupy a bigger space and need a bigger cylinder/canister. Culinary N₂O canisters are commonly more compact than N₂/Ar/He cylinders of comparable capacity. 2000 g of N₂O contained in a 3.3 L canister expand to approximately 1000 liters of gas at the standard atmospheric pressure. 5 liters of N₂ at 200 bar (in 5 L nitrogen cylinder) would expand to nearly the same volume.

Would it be possible or would I need a medical grade?

Food-grade N₂O should work well. To dispel all doubts, it's enough to hyperventilate with plain air for 10 - 20 seconds, then make a single very deep breath of N₂O and hold your breath for about 30 seconds. The effects will speak for themselves.

 

[F@#$]

I don't think it'll work.

 

[BrainSplatter]

Culinary N₂O is typically stored as a liquid under pressure (it occupies a significantly smaller space than pressurized gaseous N₂O would). Trying to add oxygen to liquid N₂O wouldn't make much sense (they simply wouldn't mix well). It's possible to create a mixture of gaseous N₂O and O₂ like medical Entonox/Nitronox, but it would occupy a bigger space and need a bigger cylinder/canister. Culinary N₂O canisters are commonly more compact than N₂/Ar/He cylinders of comparable capacity. 2000 g of N₂O contained in a 3.3 L canister expand to approximately 1000 liters of gas at the standard atmospheric pressure. 5 liters of N₂ at 200 bar (in 5 L nitrogen cylinder) would expand to nearly the same volume.

Food-grade N₂O should work well. To dispel all doubts, it's enough to hyperventilate with plain air for 10 - 20 seconds, then make a single very deep breath of N₂O and hold your breath for about 30 seconds. The effects will speak for themselves.

Ok thanks this all really useful information I've made note of it now. How long do you think it would take to become unconscious? I just know my survival instinct I could just rip the exit bag off. How long does it take for death to occur minutes - hours? I need to be sure that it will work.

 

[Intoxicated]

How long do you think it would take to become unconscious?

That depends on how you breathe the gas. If you exhale maximum air before inhaling N₂O and then won't let significant amounts of oxygen to be mixed with nitrous and won't restrain your breathing, then loss of consciousness in under 30 seconds is very likely.

Possible effects of inhaling N₂O are well described in this book
https://i.sanctioned-suicide.net/im...t_-_Anaesthetics_and_their_administration.pdf (starting from p 243)

I just know my survival instinct I could just rip the exit bag off.

At least, you will feel happy ) So you win in either case.

How long does it take for death to occur minutes - hours? I need to be sure that it will work.

Likely in 10 - 30 minutes, unless you inhale nitrous with too much oxygen. N₂O is a simple asphyxiant that displaces oxygen from the lungs similarly to inert gases like nitrogen or helium, and the time to death from breathing oxygen-deficient gas mixture would be nearly the same in either case.

 

[Eudaimonic]

If one does this, they should, IMO, use a combination of tight rubber bands, electrical tape, and potentially a Velcro stretch-strap as well in order to prevent movements one makes while unconscious from disrupting the seal.

Plus, I would use two plastic bags to further reduce the risk of oxygen permeability (research indicates that some plastic bags are more oxygen permeable than others).

Further, some bags are sturdier than others, and you want to use one that isn't going to tear or be easily punctured.

Also, note that the bag in this case needs to be a lot tighter than the exit bag because there is no constant flow system to flush out ambient oxygen. It should, ideally, be virtually airtight, and it would be wise to perform tests beforehand regarding this.

This is my backup method, FWIW.

Food-grade N₂O should work well. To dispel all doubts, it's enough to hyperventilate with plain air for 10 - 20 seconds, then make a single very deep breath of N₂O and hold your breath for about 30 seconds. The effects will speak for themselves.

Wouldn't it be better to take repeated shallow breaths instead, rather than taking a single deep breath and holding it, because of diffusion hypoxia and the fact that hypoventilation exacerbates it?

 

[Intoxicated]

Also, note that the bag in this case needs to be a lot tighter than the exit bag because there is no constant flow system to flush out ambient oxygen.

I supposed that the OP is going to use a ventilated setup with some N₂O regulator. Purchasing 2000 g of nitrous for CTB with a sealed bag seems like overkill )

Wouldn't it be better to take repeated shallow breaths instead, rather than taking a single deep breath and holding it, because of diffusion hypoxia and the fact that hypoventilation exacerbates it?

A single deep breath is supposed to give some impression about how N₂O can work when you still have a small amount of residual air inside the lungs, without elimination of oxygen that comes from the bloodstream to the lungs. If nitrous feels strong even under such imperfect conditions, this is a good sign. Checking the full strength of breathing pure gas continuously may be done in other test.

As for diffusion hypoxia, this phenomenon does not occur until you displace nitrous from the lungs with air.

 

[Eudaimonic]

I supposed that the OP is going to use a ventilated setup with some N₂O regulator. Purchasing 2000 g of nitrous for CTB with a sealed bag seems like overkill )

You may be right, but they didn't specify what method they wanted to use.

A single deep breath is supposed to give some impression about how N₂O can work when you still have a small amount of residual air inside the lungs, without elimination of oxygen that comes from the bloodstream to the lungs. If nitrous feels strong even under such imperfect conditions, this is a good sign. Checking the full strength of breathing pure gas continuously may be done in other test.

As for diffusion hypoxia, this phenomenon does not occur until you displace nitrous from the lungs with air.

The reason I brought up diffusion hypoxia is because of the fact that hypoventilation is known to exacerbate it. So, the question I have is would it be best to breathe in a shallow manner rather than taking a single deep breath and holding it in?

 

[Intoxicated]

The reason I brought up diffusion hypoxia is because of the fact that hypoventilation is known to exacerbate it.

Diffusion hypoxia is irrelevant to the described case. The complete lack of ventilation actually leads to trapping oxygen inside the lungs (it won't be exhaled), hence the concentration of oxygen there will be growing, that will slow down further loss of oxygen from the bloodsteam, thereby reducing the development of hypoxemia.

So, the question I have is would it be best to breathe in a shallow manner rather than taking a single deep breath and holding it in?

Best for what? My goal was to show that even one breath can suffice for achieving hypoxemia with remarkable symtomps (obviously, multiple breaths can lead to deeper hypoxemia). But if your gas were initially contaminated with too much oxygen (some concerns about this possibility were expressed above), you likely wouldn't experience such symptoms after single breath.

 

[windowinstaller]

it will work better then helium or other non-oxegen gasses as it reduces pain and fear of death

 

[Eudaimonic]

Best for what? My goal was to show that even one breath can suffice for achieving hypoxemia with remarkable symtomps (obviously, multiple breaths can lead to deeper hypoxemia). But if your gas were initially contaminated with too much oxygen (some concerns about this possibility were expressed above), you likely wouldn't experience such symptoms after single breath.

Better for achieving loss of consciousness more quickly.

 

[J&L383]

Culinary N₂O is typically stored as a liquid under pressure (it occupies a significantly smaller space than pressurized gaseous N₂O would). Trying to add oxygen to liquid N₂O wouldn't make much sense (they simply wouldn't mix well). It's possible to create a mixture of gaseous N₂O and O₂ like medical Entonox/Nitronox, but it would occupy a bigger space and need a bigger cylinder/canister. Culinary N₂O canisters are commonly more compact than N₂/Ar/He cylinders of comparable capacity. 2000 g of N₂O contained in a 3.3 L canister expand to approximately 1000 liters of gas at the standard atmospheric pressure. 5 liters of N₂ at 200 bar (in 5 L nitrogen cylinder) would expand to nearly the same volume.

Food-grade N₂O should work well. To dispel all doubts, it's enough to hyperventilate with plain air for 10 - 20 seconds, then make a single very deep breath of N₂O and hold your breath for about 30 seconds. The effects will speak for themselves.

What happens after the first breath

 

[Intoxicated]

What happens after the first breath

During the first ~20 seconds of breath holding I perceived nothing unusual, except for slight taste of the gas. Then I had clouding of consciousness, ringing in the ears, dimness and blurriness of vision, growing desire to resume breathing, tingling sensations and numbness in the face and especially lips (in some tests, such perceptions were also noticeable in fingers and palms of hands), loss of the sense of gravity and loss of the sense of my body. When I resumed breathing shortly after the onset of symptoms, a near-blackout state was reached, followed by gradual recovery. When I held breath long enough, loss of consciousness eventually occurred.

 

[sm1the]

During the first ~20 seconds of breath holding I perceived nothing unusual, except for slight taste of the gas. Then I had clouding of consciousness, ringing in the ears, dimness and blurriness of vision, growing desire to resume breathing, tingling sensations and numbness in the face and especially lips (in some tests, such perceptions were also noticeable in fingers and palms of hands), loss of the sense of gravity and loss of the sense of my body. When I resumed breathing shortly after the onset of symptoms, a near-blackout state was reached, followed by gradual recovery. When I held breath long enough, loss of consciousness eventually occurred.

I hope u don't mind me jumping in,
How would you do a N2O setup similar to an N2 set up(where air is flushed out) ,I tried to figure this out I couldn't find any regulators with flowmeter for culinary cylinders.The only reg you get online is a 2 guage one which I'm not sure of the suitability. .
Instead I've been thinking of simply adding the N2O to my EEBD N2 setup.
Cylinder-reg-hose underneath the hood.
I'm not sure what pressure to use.
My N2O is in 680g cylinders.
Anyway just a thinking out loud.

 

[Intoxicated]

How would you do a N2O setup similar to an N2 set up(where air is flushed out) ,I tried to figure this out I couldn't find any regulators with flowmeter for culinary cylinders.The only reg you get online is a 2 guage one which I'm not sure of the suitability.

If you wanna do it in a difficult way, a possible solution could be using some CO₂ regulator with a built-in flow meter. CO₂ and N₂O have the same density, so there would be no need in flow rate conversion. I don't know whether CGA-326 connector for N₂O is compatible with CGA-320 for CO₂. If not, you may need two adapters - something like CGA-326 to 1/4" NPT and CGA-320 to 1/4" NPT. And possibly additional fittings.

My N2O is in 680g cylinders.

680 g is only about 350 liters of gas at atmospheric pressure. With a flow rate of 15 lpm, one such cylinder can be emptied in under 25 minutes.

 

[sm1the]

Hey thanks.
I founnd CO2 ones with flowmeter.They are much easier to find than for N2.
I actually got the small ones thinking I'm only going to kind of supplement the N2,I heard it's relaxing.
I keep wondering if it's worth it because the N2O will be diluted by the N2.
As for doing it as the only gas I'm not sure atm .

 

[InevitableDeath]

That'd be funny

 

[sm1the]

If you wanna do it in a difficult way, a possible solution could be using some CO₂ regulator with a built-in flow meter. CO₂ and N₂O have the same density, so there would be no need in flow rate conversion. I don't know whether CGA-326 connector for N₂O is compatible with CGA-320 for CO₂. If not, you may need two adapters - something like CGA-326 to 1/4" NPT and CGA-320 to 1/4" NPT. And possibly additional fittings.

680 g is only about 350 liters of gas at atmospheric pressure. With a flow rate of 15 lpm, one such cylinder can be emptied in under 25 minutes.

If looking at sealed bag(no continous gas flow and CO2 purge), what bag sizes are better?.(dimensions,litres).
I was also thinking permanently doing the closure like on exit bag is beneficial? (Elastic or non-elastic cord and cord lock etc)

 

[dxm]

there is a chance it'll work! 6-8 months ago a girl died from nitrous in front of me; she was a long term user, but all it took to 'kill her' was 1.5 canisters. im not sure how much there was in them

 

[BullsDon'tFly]

I am really interested in this method, but I'm a little skeptic about the closed bag system.
How to prevent the gas inside the bag from leaking/O₂ entering when the bag is lowered fully around the head?
How to seal the bag around the neck while breathing N₂O and losing consciousness?
Why a closed system if N₂O cylinders provide enough gas to perform a continuous flow exit bag?

 

[Intoxicated]

If looking at sealed bag(no continous gas flow and CO2 purge), what bag sizes are better?.(dimensions,litres).

Mine is approx. 60 cm x 60 cm. His bag (with helium) seems bigger.

I was also thinking permanently doing the closure like on exit bag is beneficial? (Elastic or non-elastic cord and cord lock etc)

How else would you do a "sealed bag"?

How to prevent the gas inside the bag from leaking/O₂ entering when the bag is lowered fully around the head?

By taping it around the neck. Small gaps won't be enough for delivering enough oxygen.

How to seal the bag around the neck while breathing N₂O and losing consciousness?

Sealing should be done (at least partially) when holding breath. Prior hyperventilation with air can help with holding breath for a longer time.

Why a closed system if N₂O cylinders provide enough gas to perform a continuous flow exit bag?

A closed system is simpler and cheaper. Besides, in some countries, large N₂O cylinders can be much harder to obtain than 8g chargers.

 

[BullsDon'tFly]

Thank you for your reply. Very useful.

Sorry, I may have used improper words for the question you answered here:

By taping it around the neck. Small gaps won't be enough for delivering enough oxygen.

My concern is about when one is lowering the bag filled witn N₂O, since it is not sealed yet and by moving it, air can flow inside.
Taking a look at the photo you uploaded though, it seems that bags needed for this method would be far larger than turkey roasting bags used for continuous flow exit bags, right? That would compensate a little oxygen infiltration I guess?

 

[OzymandiAsh]

Mine is approx. 60 cm x 60 cm. His bag (with helium) seems bigger.

View attachment 194037

How else would you do a "sealed bag"?


By taping it around the neck. Small gaps won't be enough for delivering enough oxygen.

Sealing should be done (at least partially) when holding breath. Prior hyperventilation with air can help with holding breath for a longer time.

A closed system is simpler and cheaper. Besides, in some countries, large N₂O cylinders can be much harder to obtain than 8g chargers.

@Jello Biafra (I hope he doesn't mind me tagging him) is planning on using a black bin bag and a rubber band. He's going to tie the opening of the black bag around the forehead, while the bag is still mostly flat, and then slip the nozzle of the N2O regulator under the rubber band and fill it up, so it's like an inflated hat-balloon, then he's going to pull the rubber band and bag down to his neck (trying to let in as little oxygen as possible). That's as I understand it. Do you think this will work? He seems to have thought everything through carefully.

If so this will probably be my back up method if I can't get partial to work.
The regulators are quite expensive to get in the UK though and there doesn't seem to be any 'mini' regulators for N2O around. Are you sure a CO2 regulator would work with a 200g or 640-680g cannister?

 

[sm1the]

Mine is approx. 60 cm x 60 cm. His bag (with helium) seems bigger.

View attachment 194037

How else would you do a "sealed bag"?


By taping it around the neck. Small gaps won't be enough for delivering enough oxygen.

Sealing should be done (at least partially) when holding breath. Prior hyperventilation with air can help with holding breath for a longer time.

A closed system is simpler and cheaper. Besides, in some countries, large N₂O cylinders can be much harder to obtain than 8g chargers.

I should have written that clearer,sorry my brain is bad these days.
What I meant was -
Instead of simply lowering the filled(with gas) bag down to the neck and using zip ties,tape,rubber bands etc isn't it more efficient to pre-install a tightening system like in exit bag?(but using non-elastic cord with cord lock would seal better?).
Or any other closing system.

 

[Intoxicated]

My concern is about when one is lowering the bag filled witn N₂O, since it is not sealed yet and by moving it, air can flow inside.

Putting the bag over the head by lowering it is probably not the best approach, since N₂O (especially when it's cold after evaporation of its liquid form) is denser than air and tends to flow downward at a direct contact with air (while the air will rise, displacing nitrous oxide above it). If the head is tilted so that the bag can be lifted towards the neck or at least moved horizontally, this should reduce the amount of air entered inside. As long as the percent of air doesn't exceed 25 - 30%, it shouldn't cause complications.

It was found that anaesthesia can be obtained with mixtures of nitrous oxide and air, provided the latter does not exceed 30 per cent. With 33⅓ per cent Hewitt failed to induce complete unconsciousness. With small percentages of air the symptoms were practically identical with those produced by the pure gas. The greater the proportion of air, the longer was the inhalation period before symptoms of anaesthesia appeared. Thus with 3 per cent and 5 per cent of air the average inhalation period was 69 secs.; with 30 per cent of air it was 148 secs.

It is an interesting fact that there was more anoxaemic convulsion with 3 and 5 per cent of air than with pure nitrous oxide, the explanation being that, in the absence of all oxygen, obstructive stertor comes about so quickly as to cut short the intake of the anaesthetic gas before the blood has become sufficiently altered to induce any marked convulsive seizure. With higher percentages of air the anoxaemic muscular phenomena progressively lessened, disappearing altogether with 30 per cent of air. With moderate percentages of air the clonic movements were but feebly marked.

The time to LOC is less than the time needed to produce anesthesia (basically a comatose state) mentioned above. In case of inhaling pure nitrous oxide through a mask,

The time which elapses between the commencement of the inhalation and loss of full consciousness is extremely short, about twenty to thirty seconds on the average.

Taking a look at the photo you uploaded though, it seems that bags needed for this method would be far larger than turkey roasting bags used for continuous flow exit bags, right? That would compensate a little oxygen infiltration I guess?

This man succeeded with a relatively small bag (filled with helium)

Asphyxial Suicide by Inhalation of Helium Inside a Plastic Bag | 10.1097/paf.0b013e31815b4c69_Science Hub

tesble.com

By using a large bag (with a large amount of the gas) you extend the limit on the absolute amount of air that can enter inside and form a permissible proportion to N₂O, without critical impact on the effectiveness of asphyxiation.

He's going to tie the opening of the black bag around the forehead, while the bag is still mostly flat, and then slip the nozzle of the N2O regulator under the rubber band and fill it up, so it's like an inflated hat-balloon, then he's going to pull the rubber band and bag down to his neck (trying to let in as little oxygen as possible). That's as I understand it. Do you think this will work?

As I said above, nitrous oxide is denser than air, and this feature should be taken into account when choosing the orientation of the bag and its relative position to the head.

Are you sure a CO2 regulator would work with a 200g or 640-680g cannister?

If you manage to connect the parts well, it should provide correct readings. The question is how easy or difficult it would be to connect the CO₂ regulator to the N₂O cylinder. IDK whether such a construct would require adapters.

Instead of simply lowering the filled(with gas) bag down to the neck and using zip ties,tape,rubber bands etc isn't it more efficient to pre-install a tightening system like in exit bag?(but using non-elastic cord with cord lock would seal better?).

IDK. The tightening system seems to require more effort.

The configuration and protocol promoted by Exit International were designed mainly for old sick people who typically aren't quick, aren't dexterous, and barely capable of understanding physics. So the "classic" method is optimized for this category of people. It's likely that a closed bag system would work worse for them, because its use requires doing the steps with good coordination, speed, and understanding of the procedure (what you do and why). In case if the person has long hair (which is typical for women), this can also introduce some challenges with placing and sealing the plastic bag. When using a closed bag system, it's notably better to be bald or nearly so, while a ventilated system (with constant gas flow) should be suitable for people with long hair.

 

[BullsDon'tFly]

Thank you @Intoxicated for your detailed explanation. I think I've bookmarked nearly every comment you wrote regarding the matter. It's always a pleasure to interact with you.

 

[iamgood]

Putting the bag over the head by lowering it is probably not the best approach, since N₂O (especially when it's cold after evaporation of its liquid form) is denser than air and tends to flow downward at a direct contact with air (while the air will rise, displacing nitrous oxide above it). If the head is tilted so that the bag can be lifted towards the neck or at least moved horizontally, this should reduce the amount of air entered inside. As long as the percent of air doesn't exceed 25 - 30%, it shouldn't cause complications.

It was found that anaesthesia can be obtained with mixtures of nitrous oxide and air, provided the latter does not exceed 30 per cent. With 33⅓ per cent Hewitt failed to induce complete unconsciousness. With small percentages of air the symptoms were practically identical with those produced by the pure gas. The greater the proportion of air, the longer was the inhalation period before symptoms of anaesthesia appeared. Thus with 3 per cent and 5 per cent of air the average inhalation period was 69 secs.; with 30 per cent of air it was 148 secs.

It is an interesting fact that there was more anoxaemic convulsion with 3 and 5 per cent of air than with pure nitrous oxide, the explanation being that, in the absence of all oxygen, obstructive stertor comes about so quickly as to cut short the intake of the anaesthetic gas before the blood has become sufficiently altered to induce any marked convulsive seizure. With higher percentages of air the anoxaemic muscular phenomena progressively lessened, disappearing altogether with 30 per cent of air. With moderate percentages of air the clonic movements were but feebly marked.

The time to LOC is less than the time needed to produce anesthesia (basically a comatose state) mentioned above. In case of inhaling pure nitrous oxide through a mask,

The time which elapses between the commencement of the inhalation and loss of full consciousness is extremely short, about twenty to thirty seconds on the average.

This man succeeded with a relatively small bag (filled with helium)

Asphyxial Suicide by Inhalation of Helium Inside a Plastic Bag | 10.1097/paf.0b013e31815b4c69_Science Hub

tesble.com

By using a large bag (with a large amount of the gas) you extend the limit on the absolute amount of air that can enter inside and form a permissible proportion to N₂O, without critical impact on the effectiveness of asphyxiation.


As I said above, nitrous oxide is denser than air, and this feature should be taken into account when choosing the orientation of the bag and its relative position to the head.

If you manage to connect the parts well, it should provide correct readings. The question is how easy or difficult it would be to connect the CO₂ regulator to the N₂O cylinder. IDK whether such a construct would require adapters.


IDK. The tightening system seems to require more effort.

The configuration and protocol promoted by Exit International were designed mainly for old sick people who typically aren't quick, aren't dexterous, and barely capable of understanding physics. So the "classic" method is optimized for this category of people. It's likely that a closed bag system would work worse for them, because its use requires doing the steps with good coordination, speed, and understanding of the procedure (what you do and why). In case if the person has long hair (which is typical for women), this can also introduce some challenges with placing and sealing the plastic bag. When using a closed bag system, it's notably better to be bald or nearly so, while a ventilated system (with constant gas flow) should be suitable for people with long hair.

could you please help urgent. is n20 and whirlpool bathtub drowning reliable as n20 and hanging. i have severe anxiety and i cant decide. the bath tub is large enough for me lie flat and twice my shouldder width. i am concerned i may unconsciously come out or sometihg although risk is very low. do you have any tips for success.

 

[sm1the]

Putting the bag over the head by lowering it is probably not the best approach, since N₂O (especially when it's cold after evaporation of its liquid form) is denser than air and tends to flow downward at a direct contact with air (while the air will rise, displacing nitrous oxide above it). If the head is tilted so that the bag can be lifted towards the neck or at least moved horizontally, this should reduce the amount of air entered inside. As long as the percent of air doesn't exceed 25 - 30%, it shouldn't cause complications.

It was found that anaesthesia can be obtained with mixtures of nitrous oxide and air, provided the latter does not exceed 30 per cent. With 33⅓ per cent Hewitt failed to induce complete unconsciousness. With small percentages of air the symptoms were practically identical with those produced by the pure gas. The greater the proportion of air, the longer was the inhalation period before symptoms of anaesthesia appeared. Thus with 3 per cent and 5 per cent of air the average inhalation period was 69 secs.; with 30 per cent of air it was 148 secs.

It is an interesting fact that there was more anoxaemic convulsion with 3 and 5 per cent of air than with pure nitrous oxide, the explanation being that, in the absence of all oxygen, obstructive stertor comes about so quickly as to cut short the intake of the anaesthetic gas before the blood has become sufficiently altered to induce any marked convulsive seizure. With higher percentages of air the anoxaemic muscular phenomena progressively lessened, disappearing altogether with 30 per cent of air. With moderate percentages of air the clonic movements were but feebly marked.

The time to LOC is less than the time needed to produce anesthesia (basically a comatose state) mentioned above. In case of inhaling pure nitrous oxide through a mask,

The time which elapses between the commencement of the inhalation and loss of full consciousness is extremely short, about twenty to thirty seconds on the average.

This man succeeded with a relatively small bag (filled with helium)

Asphyxial Suicide by Inhalation of Helium Inside a Plastic Bag | 10.1097/paf.0b013e31815b4c69_Science Hub

tesble.com

By using a large bag (with a large amount of the gas) you extend the limit on the absolute amount of air that can enter inside and form a permissible proportion to N₂O, without critical impact on the effectiveness of asphyxiation.


As I said above, nitrous oxide is denser than air, and this feature should be taken into account when choosing the orientation of the bag and its relative position to the head.

If you manage to connect the parts well, it should provide correct readings. The question is how easy or difficult it would be to connect the CO₂ regulator to the N₂O cylinder. IDK whether such a construct would require adapters.


IDK. The tightening system seems to require more effort.

The configuration and protocol promoted by Exit International were designed mainly for old sick people who typically aren't quick, aren't dexterous, and barely capable of understanding physics. So the "classic" method is optimized for this category of people. It's likely that a closed bag system would work worse for them, because its use requires doing the steps with good coordination, speed, and understanding of the procedure (what you do and why). In case if the person has long hair (which is typical for women), this can also introduce some challenges with placing and sealing the plastic bag. When using a closed bag system, it's notably better to be bald or nearly so, while a ventilated system (with constant gas flow) should be suitable for people with long hair.

So tilting your head parallel to the floor can counter gas leaking down.
The other concern is the boiling point for this gas is -88c !, use an insulated hose or let the gas in bag warm before use?.

Putting the bag over the head by lowering it is probably not the best approach, since N₂O (especially when it's cold after evaporation of its liquid form) is denser than air and tends to flow downward at a direct contact with air (while the air will rise, displacing nitrous oxide above it). If the head is tilted so that the bag can be lifted towards the neck or at least moved horizontally, this should reduce the amount of air entered inside. As long as the percent of air doesn't exceed 25 - 30%, it shouldn't cause complications.

It was found that anaesthesia can be obtained with mixtures of nitrous oxide and air, provided the latter does not exceed 30 per cent. With 33⅓ per cent Hewitt failed to induce complete unconsciousness. With small percentages of air the symptoms were practically identical with those produced by the pure gas. The greater the proportion of air, the longer was the inhalation period before symptoms of anaesthesia appeared. Thus with 3 per cent and 5 per cent of air the average inhalation period was 69 secs.; with 30 per cent of air it was 148 secs.

It is an interesting fact that there was more anoxaemic convulsion with 3 and 5 per cent of air than with pure nitrous oxide, the explanation being that, in the absence of all oxygen, obstructive stertor comes about so quickly as to cut short the intake of the anaesthetic gas before the blood has become sufficiently altered to induce any marked convulsive seizure. With higher percentages of air the anoxaemic muscular phenomena progressively lessened, disappearing altogether with 30 per cent of air. With moderate percentages of air the clonic movements were but feebly marked.

The time to LOC is less than the time needed to produce anesthesia (basically a comatose state) mentioned above. In case of inhaling pure nitrous oxide through a mask,

The time which elapses between the commencement of the inhalation and loss of full consciousness is extremely short, about twenty to thirty seconds on the average.

This man succeeded with a relatively small bag (filled with helium)

Asphyxial Suicide by Inhalation of Helium Inside a Plastic Bag | 10.1097/paf.0b013e31815b4c69_Science Hub

tesble.com

By using a large bag (with a large amount of the gas) you extend the limit on the absolute amount of air that can enter inside and form a permissible proportion to N₂O, without critical impact on the effectiveness of asphyxiation.


As I said above, nitrous oxide is denser than air, and this feature should be taken into account when choosing the orientation of the bag and its relative position to the head.

If you manage to connect the parts well, it should provide correct readings. The question is how easy or difficult it would be to connect the CO₂ regulator to the N₂O cylinder. IDK whether such a construct would require adapters.


IDK. The tightening system seems to require more effort.

The configuration and protocol promoted by Exit International were designed mainly for old sick people who typically aren't quick, aren't dexterous, and barely capable of understanding physics. So the "classic" method is optimized for this category of people. It's likely that a closed bag system would work worse for them, because its use requires doing the steps with good coordination, speed, and understanding of the procedure (what you do and why). In case if the person has long hair (which is typical for women), this can also introduce some challenges with placing and sealing the plastic bag. When using a closed bag system, it's notably better to be bald or nearly so, while a ventilated system (with constant gas flow) should be suitable for people with long hair.

So tilting your head parallel to the floor can counter gas leaking down,thanks.

The other concern is the boiling point for this gas is -88c !, I don't know if this is tolerable(instant frostbite to deal with if u fail)you can use an insulated hose or let the gas in bag warm before use I guess.
As far as bags go,LLDPE (not LDPE) is the material I chose for lowest gas permeation,tear resistance and accessibility(55x 62cm,50micron).

 

[Intoxicated]

is n20 and whirlpool bathtub drowning reliable as n20 and hanging.

The reliability of methods depends on how you apply them. Perfectly executed full-suspension hanging seems a bit more reliable than perfectly executed drowning in a bathtub, but my estimation may be wrong.

do you have any tips for success.

Attaching weights to the neck should increase the chances of success. The most efficient way to reduce oxygen in the blood is to do a series of at least 2 - 3 maximally deep breaths of the chosen asphyxiant gas until the feeling of impending loss of consciousness occurs.

The other concern is the boiling point for this gas is -88c !, I don't know if this is tolerable(instant frostbite to deal with if u fail)you can use an insulated hose or let the gas in bag warm before use I guess.

The boiling point depends on the pressure. −88.48 °C corresponds to the pressure of 1 atm, which you'd have in an emptied gas container. A filled cylinder typically has a high pressure inside, which produces equilibrium between the gas and liquid states at the ambient temperature. You can check some combinations of temperatures and pressures of N₂O that form equilibrium between the gas and liquid on the site below

Ref Tools

reftools.danfoss.com

(choose R744a in the refrigerant selection menu and atm in the pressure unit selection menu).

There should be no troubles with overly cold gas.

 

[sm1the]

I knew about the - 88c boiling point but that's all I could remember from school ages ago.I have pretty bad memory loss.
Anyway,so the gas coming out of the cylinder(regulator and short hose)very rapidly warms up I take it especially at room temperatures?.
I wish I knew a way to test the gas purity inside while wearing the bag.
Thanks.