Hey "Tiger"
This entire thread is bizarre. It starts by asking if injectable N can be taken orally or injected, devolves into a weird discussion about sterility, viscosity, and floculation, and then a few word salad posts about whether a given dose is actually lethal/LD50. I feel like I'm having a stroke reading it.
Seems you're about a 9 on the tension scale (of 10). Calm.
Why do you find this thread so bizarre?
To begin with: your statement of "It starts by asking if injectable N can be taken orally or injected" is totally wrong. That's nowhere near what the OP was asking.
Then we move on to the title of the thread and the scanned page which the OP posted re: non-sterile N for veterinary use and the clear and apparent statement of fact in the document that "30ml taken orally is lethal". Really? You sure about that? Bearing in mind that the said document refers to the euthanasia of animals (and while I believe we're all animals we're certainly not all equally created animals). So what may be a lethal dose for a dog, for example, may, or may not be, a lethal dose for a human.
Prime example of the above (although off topic but demonstrates my point very clearly): did you know that dogs are at least 10x more sensitive to THC (the marijuana psychoactive) because they have many many more cannabinoid receptors than humans.
In addition: those are two very specific products detailed in the scanned document and made by Virbac in Australia. Note the different concentrations between the two and that's just to begin with. Not to mention the fact that I can just see somebody coming across a thread like this, from another country, and somehow sourcing "some of that stuff they use to euthanize dogs" from wherever they can e.g. a friend who may be an unethical vet or off the street or from the Internet, ending up with a totally different product name but which SUPPOSEDLY does the same thing, but could very well have a totally different concentration of N, and end up botching a suicide attempt and possibly ending up with permanent organ damage and then having to live with that as well.
Not that I feel I have to make my point even clearer but read my posts on one of these Fentanyl threads floating around. People going around thinking they're going to swallow a Fentanyl patch and die peacefully. Not going to happen.
So in my humble opinion: there's nothing at all bizarre about this thread. It's the sharing of knowledge that has been well researched by people (like me if I may say so) that's important and that could make the difference between success and a total botched attempt with unintended and very sad consequences for certain individuals.
And by the way: N CAN go "bad". So imagine some poor soul spending a fortune on some expired N, making their preparations or whatever, assuming all is in order, and waking up a day later feeling as sick as anything and then having to deal emotionally with a botched attempt on top of everything else (through no fault of their own). And to to mention probably being ripped blind (financially) by some disgusting human being on the Internet selling N at ridiculous prices to make a profit out of people this desperate (you'd be surprised what veterinary N ACTUALLY costs).
And no offense to anyone who may be a rabid supporter of the likes of Exit International and the PPHB. While I applaud Ms. Stewart and HRH Dr. Nitschke for their efforts in promoting the right-to-die and a peaceful death: I find it an affront that people are charged for the privilege of belonging to the organization and having access to the information. Seems to me it hasn't occurred to them that in many cases: lack of finances or loss of income is the very reason for a person wanting to commit suicide. And not to mention the fact that the PPHB has had so many revisions over the years that I'm not sure I'd trust a lot of that information especially when it comes to the use of pharmaceuticals or chemicals. I think the "ideal" dose for SN, for example, as stipulated in the PPHB, has been revised at least three times over the years that I know of as but one example.
I guess the point of all of this is really this: KNOW what you're doing before you do it. Unless it's merely a cry for help: this, as I've said before, is either a job done proper or not attempted at all.