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  1. Kurt

    Cutting 100mg Nic in half to 50mg, then storing. Good or Bad?

    Highly regarded supplier, for sure, but their "science" writing is, as was pointed out, quite convoluted and in my opinion reveals much to be desired in terms of understanding basic chemistry. And I doubt that the tiny amount of ascorbic acid added in their Armor line will do much to prevent...
  2. Kurt

    Nicotine Comparisons

    I've been using Essential Depot USP Kosher VG for a few years. Its a good VG in its own right, but I am glad they use HDPE bottles, which have no plasticizers.
  3. Kurt

    Nicotine Comparisons

    I have tried it. Vapes very well, wicks very well, even sub-ohm/high-wattage. But compared to my VG-only e-liquids, it has a taste I am not fond of at all, vaguely plastic. I will say it didn't dry me out nearly as much as PG does, but then my VG-juices don't dry me out at all, so the taste...
  4. Kurt

    What's everyones thoughts on freezing flavoring

    I don't imagine anything harmful from crystallization. It is just some compound that is not as soluble at lower temps. But this is another reason to bring to room temperature before using, to allow it to go back into solution. Menthol is an example of this, and so is ethyl maltol. If the...
  5. Kurt

    What's everyones thoughts on freezing flavoring

    I made essence from pipe tobacco in VG years ago. It has remained stable in LDPE at room temp. No separation, gases forming or precipitation. The VG probably preserved it, or else there wasn't anything "living" in it in the first place. Flavor deepened and mellowed over time, the only change...
  6. Kurt

    What's everyones thoughts on freezing flavoring

    No problem, Joel. Anything very cold if open to the air will condense water onto it from the air. But, again, I've had no problem with flavors stored in glass at room temperature.
  7. Kurt

    What's everyones thoughts on freezing flavoring

    @IDJoel brings up a very good point. It is assumed here that the flavors are synthetic, and not whole food extracts, which have indeterminate shelf lives, and probably should not be vaped anyway. For typical, nonorganic flavors I store in well-sealed glass at room temperature, and mine have...
  8. Kurt

    Nicotine Comparisons

    Thanks, but what do you mean by fantastic? I guess what I am wondering is if it is an "invisible" nic, that is, no taste, TH or pepper effect. Ultra-clean. Or is it a nic that lets you know it is there, beyond the psychoactive effects? I like unflavored vaping, but fantastic for me me for...
  9. Kurt

    Nicotine Comparisons

    I don't have any answers here, I'm afraid. I see what is meant by push gas now...to push the nicotine out of the tank container and avoid contact with air. I doubt N2 is reacting at all, its just too inert. CO2 reacting? Maybe under pressure and the right temperature with the OHs in VG...but...
  10. Kurt

    Nicotine Comparisons

    Interesting, if somewhat vague and undetermined. Sounds like they are implying a reaction with nitrogen gas. With what teeth I have left, I will try to see if I can find anything out. Unfortunately the FDA kicked most of them out.
  11. Kurt

    Nicotine Comparisons

    I still don't know what the pink is from, but I've got some additional thoughts. Vanillas will sometimes do this, but we are talking about what should be colorless or slightly yellow DIY-nic. THis is conjecture, but it could be that the batch of pure nic the vendor got to make DIY-nic has some...
  12. Kurt

    Nicotine Comparisons

    No that's if it is in a 50 mL bottle. 8 mg is TOTAL mass of nic lost. Not to be confused with 100 mg/mL nic, which we often write as 100 mg. Can be confusing. In a liter of 100.00 mg/mL nic, 8 mg loss will make it 99.99 mg/mL. Within even pretty tight experimental error, that is essentially...
  13. Kurt

    Nicotine Comparisons

    Ascorbic acid will react with O2, so maybe this is their strategy, but I don't know if it reacts with O2 faster than nicotine does. It will probably compete, however. They claim a 0.01 w/v% of ascorbic acid. In 50 mL of base, this will be 5 mg ascorbic acid, or 2.8x10^-5 moles, which can...
  14. Kurt

    Nicotine Comparisons

    Just saw this. I think your freezer should be just fine at -18C. This is about 0 F, and cooler than my freezer (10F). I have only limited data from freezing a VG-nic juice with 20% water, from years ago, but it did not separate or have solid ice in it...it just got thicker. It was only one...
  15. Kurt

    Deeming Regulations have been released!!!!

    Wow, thanks buffaloguy! :) Better vaping through chemistry! By the way, Classwife made my storage post here a sticky in the DIY E-Liquids subforum, if anyone wants to look at it for reference. Right now it is locked, so you cannot add comments, but I may add some other thoughts to it over...
  16. Kurt

    Deeming Regulations have been released!!!!

    As I said, I don't want to clog this thread up with DIY details. LDPE will not dissolve, but it will allow significant O2 transport through it. So in terms of long term storage of nic, if you don't want oxidation, then avoid LDPE.
  17. Kurt

    Deeming Regulations have been released!!!!

    I don't want to clog this important thread with DIY stuff, but I thought I would jump in briefly for those wondering about how to store nic long term. My thoughts on this matter have changed a bit from what I "knew" years ago, but not much, and not in my methodology. I have unthinned VG-nic...
  18. Kurt

    Long Term Nic Storage

    Edit by classwife : With Kurt's permission I made a sticky of his post from this thread : Deeming Regulations have been released!!!! ........................................................................... I don't want to clog this important thread with DIY stuff, but I thought I would jump...
  19. Kurt

    Corn Glycerin question.

    Turns out some sources call ANY diol a glycol, but wiki says a glycol is a vicinal diol (https://en.wikipedia.org/wiki/Diol). My organic chem text says a glycol is a vicinal diol. Vicinal means the two OHs are on adjacent carbons. But DuPont says 1,3-PDO is a glycol, and so do many online...
  20. Kurt

    Corn Glycerin question.

    Looks to me that this is what is happening: they are calling 1,3-PDO "corn glycerin". It is made from corn syrup, but its not glycerin, which is 1,2,3-propanetriol. I have known about 1,3-PDO for well over a year now. Lots of wording stating how "all-natural" it is...save for the part that...
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