0.18mg. Not that much.
But I agree with the other posters, walk away from this. Think about how the DHS would react to a guy having 20,000 lethal doses of a chemical that is readily absorbed through the skin in his garage. Can anyone say "chemical weapon"?
I wonder how much shipping would be on an item like this. I imagine shipping plutonium would be cheaper.
I don't know what planet you live on, but most chemical suppliers would ignore you at best and report you to the DHS at worst for asking.
As for working with the pure stuff: I'd feel comfortable doing so in gram scales without any overly fancy protective equiptment, but a bottle of this size is just plain scary.
Chemist, nicotine is actually not a controlled substance. Do you think all juice producers in the US simply buy their inventory from China, or just dilute high-nic juice from China? Some buy pure nic from chemical houses, and no, DHS is not called, nor do they need a PhD or affiliation with a research center or university. That's the "planet I live on". I know this for a fact, since I am friends with one of these said producers. Some houses will deny you unless you are of high enough pedigree in chemistry or biochemistry, but most will sell it to anyone no problem.
That said, getting pure nic to make juices just so you can save money or stockpile without massive preparation, equipment, and safety training is a fool's errand, and will be strongly, and perhaps rudely, discouraged here in a public forum that is under watchful eyes of the FDA. If people want to learn on their own and take the enormous and unprepared risk for the sake of a cheap vape, that's up to them. Total idiots that they are, they are not criminals, nor are they a security risk. Its just that vaping suddenly makes pure nic something that might be desirable, whereas it simply wasn't before PVs came on the scene. So the tide may well change entirely with the SE/Njoy/FDA court case. But currently, anyway, getting pure nic is not illegal. Nor does it put you on a DHS list. At least my friend has gotten no indication he is on one. And he is just one producer of many in the US.
..Alex, you kill me....crazy German....