I wonder how many runsyou have under the belt
I run the purest of pure discoloration happens with all ALL reactions
Not 1 reaction you will ever achieve starting at pale gold clear and ending at the same color let alone water clear
Wich even if you where recristelizing
Is not possible on cbd
But he do as you wish and please
Claim as you wish
Ph of solution is sufficient to make color appear or disappear Has to do with the refraction of light and alignment of the molecules
The availability of oxigen is another factor you can t expel and this will oxidize some in the process
1 Like
What s your reagent of choice ???
Color comes from reactions of the substrate being distilled with the enviornment. Even if you start without pigment, purple cbd is a thing.
1 Like
One can have cbd go treu all the colors of the rainbow yust with ph swinging
Got nothing to do with it s purity
I had the kids swing it 20+ times from bright yellow to deep purple
BUT water clear is not one of them
1 Like
Show me ptsa on an alkane that stays the same color start to finish 
Aluminium chloride same
Triisobutyl aluminium same
Mesic same
Carbon activated same
Hcl gas for same
Boron less but it gets the amber heu
Phosforic least of all
And maybe amberlyst 15 at rt or colder
The last run was a ptsa in petrol ether at room temperature run and it had the same color after 3 hours and was processed into a clear oil.
Old, partly decomposed cbd is yellow dissolved. HU-331 is purple. Simple as
Do you distill acidic crude?
Can you elaborate please what this does?
Not necessarily. If your material is oxidized prior to distillation youll still have color
Color IMO more has to do with oxidation state then contamination when using isolate (unless youre reallty bad and dont know how to neutralize properly)
Heres an example
This is the d9 thco i made that kca tested at 1000mg/g on gcms. Why is it orange and not yellow or clear?
Because its oxidized
1 Like
The addition of powders in small amounts to the boiling flask in spd
Takes colors out when distilling
O and there is NO way you have cbd dissolved in a solvent and add ptsa to that and be water clear. No way
Clear oil that’s easy
Water clear starting solution then adding ptsa and still be waterclear after 3 hours is impossible
Good luck I am done i ll comment once you place your sop if waterclear cbd dissolved in a solvent
Since you won t be able to good night
Right, our environment is part oxygen.
1 Like
What i wrote, the solution didnt change color during the reaction and the starting solution was as clear as it gets, a very faint hue of yellow.
The result again was virtually clear oil.
Cmon, i meant clear as opposed to yellow without rexing and that taking the color out in the first place helps achieving water clear oil. Im sure there are other tricks too.
Thank you so much. I tried different kinds of CBD isolate (most COA says 99%+)
It seems that it is true that the better the CBD, the clearer it is after the conversion, and distillation.
The best CBD, after I melt it, dissolved by Hexane, it is water clear. However, after D8 conversion, some yellow showed up. I removed the solvent from it, the color is darkened, and most of importantly, it is not clear. I have to say that it is translucent, maybe as Rogue @Roguelab mentioned, it is a faint gold hue?
I also tried to recrystallize one CBD, it shows to be better, but still show up the color after the D8 conversion. Maybe my crystallization method is not that good.
Can I ask what the blanketing gas is used for?
After the conversion, and after the solvent is removed, the disty looks like opaque, so I assume that the bentonite clays can help make it clear?
Thank you so much
Your crystelization method is fine
There a number of things that create color and these are near impossible to avoid
Solvent has oxigen solvents have a ph
( dcm super accitic place cbd in dcm and you ll have 3% thc 48 hours after)
Either way try to distill it s a good purification tech and worth the effort
The opaque color is most likely entrained water
It makes sense to right before solvent evaporation to dry the solvent with a drying agent mgso4 or cacl2 beeing my first choice
Passing your final solution treu a Büchner with some bentonite at the botom and drying salt on top is often enough to get rid of the water content
So phosforic acid+ethanol can achieve water clear without distilling? or at least less color? I never tried this before…
Blanketing gas is overkill for crystelization
But it does have some effect in avoiding discolorations of solutions as does sparging solvent oxigen free but as I said overkill
These are tech s I tried in a r and d project to make thc-a free cbd-a for the Japanese market and pharma
The work does not show on the coa it s more visual aspects that prove it to do something but your product does not get better in the reading field of hplc
1 Like
I already tried to boil it at high temperature (150 C) under vacuum, it does not help…
I actually did not use water in this process,
