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Nicotine Concentrate Turning Brown

Discussion in 'DIY E-Liquid' started by Chick Bowdrie, Oct 1, 2018.

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  1. Chick Bowdrie

    Chick Bowdrie Full Member

    Dec 11, 2012
    California
    I wasn't really careful with my nicotine concentrate and contaminated it with some VG. It's also maybe 6 months old minimum. Is it time or contamination that turned it brown? Is this a bad thing. It also makes me wonder if the brownish pre-mixed e-liquid in shops isn't mixed in a very sterile environment.
     
  2. Baditude

    Baditude ECF Guru ECF Veteran

    Apr 8, 2012
    Ridgeway, Ohio
    Liquid nicotine will normally turn darkish when exposed to oxygen or heat. Oxygen doesn't affect it in any way other than the darker color. Heat exposure may decrease its potency. That's why I don't recommend using heat to steep e-liquid.

    Nicotine should be good for at least 2 years unless you keep it stored in a freezer.

    [​IMG]

    E-liquid naturally turns darker over time.
    Why E-liquid Changes Color
     
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  3. gpjoe

    gpjoe Ultra Member Verified Member ECF Veteran

    Oct 30, 2013
    Up North
    From everything I know, which isn't a lot, the nicotine will oxidize over time and turn yellowish then brown. Freezing the nic base will slow this down considerably. The reason the store bought juice is darker may be that the juice is older and may have been sitting on the shelf for a while, or it may have some darker flavoring.
     
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  4. score69

    score69 Ultra Member ECF Veteran

    Feb 28, 2015
    Athens, GA, USA
    My guess is it's mostly likely oxidation/degradation from the storage conditions.

    Nic is in a PG or VG base and will keep clear for years, properly stored in a freezer.

    You may have lost a bit of potency, but it will vape just fine. I honestly prefer the taste a little better with age.
     
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  5. gpjoe

    gpjoe Ultra Member Verified Member ECF Veteran

    Oct 30, 2013
    Up North
    ...and Baditude beat me :)
     
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  6. score69

    score69 Ultra Member ECF Veteran

    Feb 28, 2015
    Athens, GA, USA
    And me...
     
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  7. puffon

    puffon Vaping Master Verified Member ECF Veteran

    Sep 18, 2014
    Florida
    Different flavors affect color also.
    Some mixes will turn brownish in a few days.
    Others I've mixed, stay clear for several months.
     
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  8. Canadian_Vaper

    Canadian_Vaper Vaping Master ECF Veteran

    Jul 30, 2015
    ON. Canada
    Just oxidization, most people keep it in the freezer as it slow down the process.
     
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  9. Baditude

    Baditude ECF Guru ECF Veteran

    Apr 8, 2012
    Ridgeway, Ohio
    [​IMG]

    Nic concentration can affect the appearance of the same flavor.
     
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  10. stols001

    stols001 Mistress of the Dark Nicotinic Arts Verified Member ECF Veteran

    Supporting member
    May 30, 2017
    Tucson, AZ
    Unless your VG itself was contaminated, I don't really see how a bit of VG being in there is a problem. Think about it. If every time you added nic to VG it caused contamination, well, we would actually be unable to make flavors.

    As others have said, it's probably just oxidization, and the reason why most DIY will freeze large quantities of nicotine to halt the oxidation process, and keep a smaller amount in the refrigerator for mixing. If it's in a light colored bottle, or hot conditions, it will darken.

    If it doesn't taste horrible, have things floating in it or otherwise turning VERY odd colors like bright red, it's probably fine. If you have a tolerance for somewhat oxidized nic, I don't see any reason for you not to use it, but maybe store it in the fridge from now on so you aren't exposing it to further light and heat. And read up on storage of nicotine so you know what to do with the next batch you purchase.

    Good luck,

    Anna
     
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  11. Chick Bowdrie

    Chick Bowdrie Full Member

    Dec 11, 2012
    California
    Good responses, I'm not concerned now, thanks folks!
     
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