Pjkt2501 said:
Also worthy of mention here:
The nitrous people inhale to get high off of isn't medical grade (unless it's from / at the doctor's office) and thus contains many impurities. Average % of oxygen in the air is 21%, greater than 24% is dangerous (medically over-oxygenated rooms are 22-23% O2, instead of 21. Same goes for any O2 you can purchase freely - it isn't pure.
So you're saying there's no easily accessible way to get 100% (or close to 100%) pure oxygen without some sort of license? Dammit. I didn't think there would be, pure oxygen is dangerous just as a fire hazard aside from anything else.
That's not true. You
can get medical-grade 99+% oxygen. In fact, the links I posted (where you can buy it online), one of them is for 90% oxygen and the other for 99.5% oxygen. The remaining percentages are not contaminants, they are just gases found in normal air (only purer/cleaner than normal air).
Pure oxygen by itself is actually
not flammable. Oxygen just helps fuels to burn faster. Plus lots of things are flammable/oxidizers and that doesn't mean you can't buy them. However, it may be harder to get huge quantities of oxygen at once, as they prefer to take precautions with large quantities. It does not mean the small quantities are less pure. And they'd be handy for your purposes.
The reason that oxygenated rooms are not pure oxygen is because that would create make a fire worse if the room caught on fire. When administering pure oxygen people breathe out of a small canister or from a tube. You
can easily buy medical-grade pure or almost-pure oxygen in small containers.
As for nitrous containing "many impurities", I don't personally know about that, I haven't researched it, but "impurities" are not
necessarily contaminants, aka bad for you. If you are getting nitrous chargers for making whipped cream, then technically they
are made for human consumption. It's possible that a sketchy Chinese charger could have less rigorous testing for contaminants at the factory.