Makes sense as I have had ACS grade Heptane mix with water and act stable until chilled
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Would methanol be an alright choice to extract hemp crude?
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No, methanol extracts too many sugars for it to be a good choice of solvent for an initial extraction. Methanol is best used just for winterization. @Infoseeker
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You got charring too?
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No I dont even produce distillate. A few weeks ago I posted a study wherein the researchers measured the solubility of various simple sugars in ethanol, isopropyl, and methanol. IIRC the result was that ethanol at low temperatures hardly dissolved much of any of the sugars but methanol was shown to dissolve quite a bit of most of the sugars they tested and it did so at all thw temps the researchers tested at.
Isopropyl was somewhere in the middle.
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I think that might explain this…
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Did you extract with methanol to begin with in that post? Like from the plant material? Because if so, that could be the case.
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No, it was -18 ethanol, but thAt would likely still show some sugars. I’m guessing with winterization in ethanol it excludes the sugars a bit better. Whereas methanol pushes out waxes/fats better.
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I’ll try to find that pdf for u
Sorry can u link to that experiment?
Darn thought it would be a cheap alternative.
As you can see I was mistaken, isopropyl and propyl alcohol both dissolve less sugar than either ethanol or methanol.
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Why isn’t iso used more in extraction? Couldn’t you use more to achieve the same yields? Cheapest I could find so far is 1600 for 200L of ethanol which isn’t that bad
People tend to just use ethanol because its drinkable people take that to mean it’s a safer solvent. At least that’s what it seems like.
We know if u extract cold enough you can make decent extract with any of the alcohols. If you did an initial extraction in isopropyl you would pick up no sugars but more fats, you can proceed to remove these fats by reducing the volume of the solution and then adding methanol to precipitate them. @Infoseeker
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I used to use iso. I think half of it is market demand for a “healthy” solvent, and half is the greater difficulty of avoiding wax pickup.
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It seems like ethanol is exclusionary of fats, waxes, sugars and chlorophyll at low temps though. Seems like it might be superior if you don’t want to deal with remediation
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I could agree with that
it may be wishful thinking but it would be nice to extract, filter and winterize in 1 solvent without the ultra low temps
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Food grade etho 190= the best
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