Color change cause and effects.

[Chas_L]

I have read hundreds if not thousands of post explaing Steeping and the most common explanation for color change is the Nicotine oxidizing. I find this interesting as I have at present approx. 30 ml. of 60PG / 40 VG - 12mgNic base left in a 200 ml. bottle which is still perfectly clear after over a month. This base batch was only 120 ml to start with has been opened about a dozen times to make a small trial blend so has been exposed to a lot of air.

Just yesterday I used 9ml from this batch to make some TFA Black Honey tobacco for a Viberation Speed Steeping test of sorts. Half of this batch viberated for 4 hrs. other half not. No color change during this time however after setting for an addational 20 hours in a dark closet the non viberated bottle is noticeable darker than the other one. Only explanation I have for this is the extra air space in the bottle. Viberated one 8ml. flavoring bottle thus very mininum surface area while non viberated one is a 30ml. bottle thus massive surface area.

I have Blu bacco from MBV which is 80/20-18mg. which is over a month old that is still almost clear and the bottle has only approx. 5ml. left in it. Have made 60/40-10mg. batch using their (FW) flavoring and it has remaned clear for over a week. Blu bacco remains mostly clear even while being vaped in Evods while many other flavors darken a lot.


I have read post which suggest that Vanilla in the mix encourges color change and this seems to be accurate.

I have read a few post where it was mentioned that the size of the batch effects steeping , as in thge larger the amount the slower it steeps.

 

[john333]

I think I would google "why does molecules combining in liquid change its color".

 

[FACE MEAT]

There's definitely more than just nicotine oxidation happening inside bottles of mixed e-liquid.

Flavour Art's Oba Oba and Seedman's Captain Black both turn a deep reddish color after a month of rest. A bottle of ethyl vanillin solution (10% in PG) I made a few months ago has turned from crystal clear to such a dark reddish brown that light barely passes through it. Since there's zero nicotine in this solution, this leads me to believe that vanillin has a lot to do with drastic color changes.

 

[dannyv45]

Your confusing steeping with nic aging. When refering to color changing due to steeping. This means flavor has been added and the color change is due to the chemical interaction of flavor molecules with the base. This change happens over several weeks thus you notice the color change which can be pink, light amber, dark amber and even brown. When speaking of color changing of the Base then there speaking of aging of the Nicotine (oxidation). And this usually happens gradually over a year or more.

 

[mrcoolbp]

Well said Danny!

 

[LucentShadow]

I have a couple of flavorings that tend to make a mix go dark over time. TFA Bavarian Cream (a vanilla-based flavoring) tends to make a mix take a reddish tint, depending upon how much is used. Seems like that flavor, when mixed with TFA Juicy Peach, darkens even more, though I don't do that combination anymore.

It has to be a chemical reaction of some sort. Not sure if there should be any concern over it, though. I'm moving away from combinations that cause this, either way, as I don't like the mix as much when it gets to that point.

 

[Chas_L]

Found link to this post in a steepin thread here on ECF.

http://www.reddit.com/r/electronic_...inal_result_of_chemical_analyses_of_steeping/

Thread here

http://www.e-cigarette-forum.com/fo...r-juice-whats-your-method-11.html#post9592724


Seems like 8 hours at 60C / 140F equals 2 weeks in a cabinet.Perhaps the heating in a UC helps more than the mixing.

 

[FinallyQuit]

I find it odd that the bottle of ethyl vanillin is completely colorless, but when mixed with pg vg and nic, it turns pink. The more vanilla (for instance, my favorite recipe for Vanilla Custard) turns almost bright red when steeped. I like the color change, reminds me of those bathtub toys that change color when the water is too hot. It's like a litmus test for steeping!

 

[echofinder]

There is more to it than nic - I think flavorings are a large part. I mix my NF butterscotch in VG & vap out the alcohol for awhile before adding nic; this process alone causes some darkening of the mixture.