Ok was in a pharmacy today and was looking at surgical spirit their are two kind's one that has Camfor oil in it and one that is just a mixture of Ethanol and Methanol. Bing light pop's on in head discount the the stuff with camfor in it
So how hard would it be to seperate the ethanol methanol mixture.

Now Ethanol has a boiling point of 78.4c
and Methanol has a boiling point of 64.7c

Now both the alcohol's are flammable so naked flames and open container's are out so would two demijon's with cork bung's joined with copper tube one with the spirit in and one empty and then the empty one placed in an ice bath and the other in a heated bath held at 60c cause the separtion of the two liquids. Or is this just a stupidity spasm of the higest order
vesel a has spirit and vesel b empty

Click to view attachment

I have tried distilling before and the most difficult part was to achieve and maintain an appropriate stable temperature
you need to separate the compounds.

yeah I would consider using a mash tun to be the hot water bath ( a water boiler/heater used in home brewing with a temperature controller on it ) to heat the spirit to sub methanol boiling point and hold it there for a long time and let evaporation and the partial vacuum do the buis drawing the methanol into the b vesel.

e2a it's been nearly 25year's since I was in a chemistry/physic's lab I remember dropping pressure lower's boiling point's and any vapour in b is going to condense in to methanol so methanol will evapourate first and the surgical spirit in question is 1percent methanol(bp) and 99percent ethanol (bp) (does the (bp) mean British Pharmacutical grade?)

I wouldn't risk it, I've serious considered giving it a go with some moonshine a guy makes down the local pub.

96% or there abouts.

You want pure ethanol build a still, then buy a drying agent.

2 demijohns are going to end in blind people.

They usually add other denaturants like denatonium and pyridine to make it impossible to redistill the pure ethanol; and they don't have to list such additives. Even if you could buy a pure ethanol/methanol mixture, you'd need to build a reflux still to thoroughly remove the methanol. If you're willing to build you're own reflux still then you might aswel ditch the denatured stuff anyway and brew up your own sugar wine to distill. If that idea interests you then take a look at the designs for the bokakob mini still.

I'am not on about doing this to drink the stuff just thinking it would lead to a purer solvant and the list of ingrediant's didnt list any other denaturant's

Use a butane extration instead.... its hard to find butane that's NOT pure.....

Its faster (about half an hour between start to smoke) check it out

Yeah I know about butane extraction but the trim need's be dry to do that I was more thinking in the line's of amber that I read on a thread on here some where that you can use on fresh / wet trim as doing a bho extraction freezes the trim causing the cell walls to explode thus adding water to the oil

There was a member on board that used pure alcohol and made beautiful oil from it in 15mins i can remember his nick

if i remember ill post it here,maybe someone else remembers?

Its not Grobag or Tilt but...no can t remember

It was 'Jump' Herby but ethanol in uk has a ridiculas excise duty on it which make's it near 30 - 40 usd for about 100ml


e2a if you search +amber + ethanol that will bring the thread up

I was a contributor in that thread. For your information, butane can be used on fresh trim. It bursts the cells as they freeze but water doesn't leak out because the water is frozen. Any loose water crystals also get filtered out. You can also use isopropyl alcohol on fresh or dry trim, instead of ethanol. That atleast doesn't contain additives like pyridine and denatonium. They don't have to list such additives in denatured ethanol by the way, so it doesn't mean that they aren't there just because they aren't listed on the label or MSDS .

Aaaaaaaaaa i was looking up to 2006 in hash and oil forum but didnt find it,then i come back ere and see you now it Juuuuuuuump yes thats the fella

Its a bit expencive but i like the resoult and i used Newport gass once for extrancion and smoked it my head hurts from that stuff not sure was it just strong or something else inside i didnt like, so next harvest time its either Pure alcohol or Tilts hash thread./most likely hash

Any way i cant coment your method because i now nothing off it but ill watch it go if you try...good luck

herbal

Would it have the information on the coshh sheet's

hmmm IPA now then that is more ready available and would save the faffin about

Yes, it should do, or in a COA. It will sometimes be mentioned in the MSDS also but not always.



Why did you think that only ethanol could be used on fresh trim? You can use pretty much any solvent commonly used for making oil.

To answer an earlier Question that wasn't answered (not that I saw)

BP=British Pharmacopoeia = Pharmacy grade

no, I have no idea what the standards are to achieve BP, even tho I worked at a Pharmaceutical Factory years ago.
I did ask then, but they weren't keen to tell any worker any more than they needed to know.

e2a:
I Googled it, but no luck on BP standards.

Well I said poke hole's in it and well it's looking like a bleedin Collendar suppose it was an execrsie in find info will go with IPA now then is IPA in a pressurised container the same as a non presurised container. I can get IPA aersol from work for nish (plus IPA will evaporate with out extra heat)

Aerosols usually contain hydrocarbon gases like butane or propane. However, these usually won't be highly refined gases, just standard, inpure gas. I'd buy the pure, bottled IPA, it's cheap enough.