dabbindylan
Well-Known Member
This is a distillate in a vac chamber at -22 hg mercury. Please tell me whats happening. Its bubbleing more then useal turning very light almost white color. Then it darkens heavily with a few seconds??
Whats happening
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DemonTrich
Well-Known Member
Why would you need to put distillate in a vac oven? If it's a true distillate, the terps, lipids, waxes, water, and other solvents should.have been fractioned out long ago.
Fadedawg
Well-Known Member
Ummm, define distillate. What I see is a boiling mixture in a vacuum chamber.
The size of the bubbles suggest it is a solvent boiling off, which is typically not present in a Clear distillate fraction, leading me to believe you have an alcohol tincture/solution rather than a distillate.
What temperature are you running it at?
How was this material extracted? Anthro cyanins are typically the darker colors in a non polar extraction, but chlorophyll adds color in a polar extraction. Anthro cyanins are plant color pigments and exhibit the Beers/Lambert effect, which means a thin film may be almost colorless and two thin films may be almost opaque, due to the way the scatter light.
They are also glucosides (plant sugars) which caramelize and darken with heat.
When the puddle is inflated, the bubble walls are the thinnest possible at their surface tension, so will be very light in color, but as they settle down into thicker layers, will darken.
Extracting at subzero temperatures to minimize C-30 molecule pickup is how we deal with these dark colors in our concentrate.
dabbindylan
Well-Known Member
This 1 is weird.. Veryyy a pinene? Know what i mean? Instead of getting lighter or clearer over time its gotten dark. Can your cold traps collection reflux?? 170c 1 torr
Fadedawg
Well-Known Member
Ummmm, could you elaborate on the question?
dabbindylan
Well-Known Member
My question. Should a valve be put in between coldtrap intake and distillation head.. Can terpenes reflux out from your cold trap back into collection flask upon vacuum shut down..lastly have you found a alternative vacuum pump for distillation ive been using a welch but getting a 2nd would be costly
Fadedawg
Well-Known Member
If the trap is still cold, they should stay put, as they are further from their boiling point at atmospheric pressure. If you let it sit there and cool down, the boiling flask will pull a reverse vacuum and could add some contamination.
2L and below, I suggest checking for used 1402 or 1405's. They come up regularly on Ebay at good prices. Compare a new Welch 1400 series to Cascade Scientific's Agilent mag drive pump.