Author Topic: E-liquid colour change explained....  (Read 9146 times)

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Offline Fiona

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E-liquid colour change explained....
« on: March 10, 2011, 02:24:30 PM »

OK...I did some research and found this regarding a post on an E cig forum (Dont know which one as it wasnt in html format)... By someone called Nick Oteen who owns Decadent Vapours.

'Title: Re: Liquid changing color
Post by: Nick OTeen on December 06, 2010, 05:31:58 PM

Freebase nicotine is a very reactive chemical, and it will tend to change colour in solution (which colours it turns depends on what it's mixed with, though pink is typical in PG, and yellow in PEG.) Different flavouring compounds can also contribute to colour changes, though the main agents of reaction are light, heat and exposure to free oxygen.

It's a purely cosmetic factor IMO - I don't believe much (if any) nicotine is delivered as freebase in vapour anyway, since it will react immediately in the presence of the heat generated by a glowing filament (quicker than you can get it into your lungs.) This is probably why we don't get as much of a head rush from vaping as from analogs (analogs do a pretty good job of preserving the freebase, because they use ammonia to crack it, and it's inhaled in micro-globules of tar in a stream of oxygen-depleted air, that's already passed through the combustion zone at the tip of the cig. In comparison, you're sucking fresh, fully-oxygenated reactive air into your ecig, to mix with very hot, vaporized nicotine.) It would be hard to design a better way to degrade freebase nicotine if you tried, but we know from experience that vaped nicotine is still satisfying :)

For best storage conditions, keep it cold, keep it dark, and keep it airtight. But don't worry if it darkens - you'll still get the same nic buzz, and the flavour isn't unduly affected. I have some nearly year-old old cinnamint on my desk (deliberately exposed to ambient light and heat in a bottle half-full of air,) that's now black, but still tastes fine and delivers the same nicotine 'hit'. A similar vintage of menthol is still only very slightly pink, while vanilla is bright red, and rhubarb crumble is deep brown.'

Offline jimbo497

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Re: E-liquid colour change explained....
« Reply #1 on: March 10, 2011, 02:52:13 PM »
V interesting , thanks Fiona .

Offline Capt12B

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Re: E-liquid colour change explained....
« Reply #2 on: March 10, 2011, 03:22:10 PM »
I am familiar with Nick O'Teen's beliefs on nicotine and hold him in high regards as a master of all things related to e-juice ;D I would put a lot of stock in what he has to say ;)

Offline Fiona

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Re: E-liquid colour change explained....
« Reply #3 on: March 10, 2011, 03:27:32 PM »
Its an interesting subject I'd only had a few fleeting thoughts about....until today... ;D

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Re: E-liquid colour change explained....
« Reply #3 on: March 10, 2011, 03:27:32 PM »



Offline Capt12B

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Re: E-liquid colour change explained....
« Reply #4 on: March 10, 2011, 03:43:53 PM »
I still the the tanks are backwashing into the tanks LOL

Offline Milt

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Re: E-liquid colour change explained....
« Reply #5 on: March 10, 2011, 05:06:20 PM »
Backwashing may occur. Remember the old cart fillings?....remember when you pulled out the plug of gungey old polyester wadding?....remember that it was a different colour to when it was new? Maybe we only notice this colour change because now we can see it.
There are sugars in the juice - they could also be caramelising due to heat from the atty.

I'm sure not a scientist.  :D Any scientists out there?

Offline Fiona

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Re: E-liquid colour change explained....
« Reply #6 on: March 10, 2011, 05:27:38 PM »
I still the the tanks are backwashing into the tanks LOL

I'm thinking of doing some experiements....  ;D

Offline justin case

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Re: E-liquid colour change explained....
« Reply #7 on: March 10, 2011, 05:50:01 PM »
it is backwashing, its nothing to do with time or air exposure or heat,  it happens during use,  if you use a clear cart you can watch it happen.

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Re: E-liquid colour change explained....
« Reply #7 on: March 10, 2011, 05:50:01 PM »



Offline sadtranz

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Re: E-liquid colour change explained....
« Reply #8 on: March 10, 2011, 07:03:36 PM »
it is backwashing, its nothing to do with time or air exposure or heat,  it happens during use,  if you use a clear cart you can watch it happen.

Agree if you use tank or clearomizer, i use pg mixed with farts only 5 drops per 10ml juice and some of the farts are pretty clear but my 10ml bottle starts to go pinkish after a day depending on farts colour  so what Nick OTeen say's rings true for me

Offline light487

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Re: E-liquid colour change explained....
« Reply #9 on: March 10, 2011, 11:12:39 PM »
Yup yup.. this is, what Nick said, exactly what is happening and what I always tell people when they ask.

Offline Milt

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Re: E-liquid colour change explained....
« Reply #10 on: March 12, 2011, 08:03:23 PM »
 :) but some e-liquids stay clear - why don't they all backwash?

Offline justin case

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Re: E-liquid colour change explained....
« Reply #11 on: March 12, 2011, 08:07:09 PM »
:) but some e-liquids stay clear - why don't they all backwash?

in the tt all my juice changes color before the tank is empty.

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Re: E-liquid colour change explained....
« Reply #11 on: March 12, 2011, 08:07:09 PM »



Offline Capt12B

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Re: E-liquid colour change explained....
« Reply #12 on: March 12, 2011, 08:24:17 PM »
All my juice darkens. Even clear flavorless juice, new attys take longer to darken juice than older more used attys ..... at least for me ;)

Offline Milt

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Re: E-liquid colour change explained....
« Reply #13 on: March 12, 2011, 08:31:18 PM »
Ok - don't laugh please. I have been vaping lime zinger and some home made panatone eliquids in a clearo for the last 3 days. Have not cleaned the tube out since starting - just refilled when 75% empty. It is the same colour as new. Another clearo with FAT has darkened before it's first refill.
It is most curious.....  :-\

Offline Fiona

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Re: E-liquid colour change explained....
« Reply #14 on: March 12, 2011, 09:42:32 PM »
I think we need to get our chemistry sets out  ;D 

It does seem that some flavours darken much quicker than others....