Overvaper wrote:
I have actually distilled nicotine in a lab, and after doing so it is crystal clear as water. The original sample was brown, but very little residue remained.
Meaning that when pure it will be clear, but even after decades of storage it will still be 99%+ pure, just that the contaminants are very highly coloured, and will make the liquid appear dark even though it is perfectly ok to use (at least for experiments, and certainly vaping).
Some people say it oxidises on storage, but that's incorrect: there isn't enough oxygen in any bottle to oxidise more than a few mgs even if that were possible at room temperature. More likely the brown colour comes from degradation by UV light, to form the minute quantities of highly coloured polymeric impurities (which won't evaporate when vaping in any case).
So ignore any 'shelf life' or 'use by' dates: they have no scientific basis.
Thank for explaining, that what I’ve thought about. I don’t believe in shelf life base for anything.
As I won’t order nicotine base every day, and it will be used for a while with all my batches, then I expect to get a reliable nicotine.
In addition, they didn’t demonstrate expiry date. Production date indicates that they have produced it recently, but with a colour like that, I don’t think so.
So there are many DIY experts here, therefore I asked.