Sulfur remediation with copper and ethonal questions

I have about 80 grams of material that has a strong sulfur contamination and up until now I’ve learned that I need to dissolve the concentrate in ethonal then let this sit at approximately 130 degrees F for 24 hours with a copper scrubber in the pan. My question is how do I then remove the ethonal and get a final product after the scrubbers come out clean? For reference I have 95% ethonal bought off Amazon and chore boy scrubbers. I also only have equipment you’d find in the typical home.


Although sulfur can offgas SO2 (matches) in air or H2S (rotten eggs) with cannabinoids, elemental sulfur itself is fairly safe to eat.

If you must save it you could try heating it in a water bath to decarb it as much as possible (until you get rotten egg smells?) and then use it in edibles.

Removing the sulfur is difficult to do. Even with copper, sulfur requires heat and time to remove it to the point of not being able to notice its flavor. I haven’t seen the copper ethanol method work without distillation after but hopefully others can chime in.


I’ve always had to distill it afterwards

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If you’ve got the finesse, you can crystallize some cannabinoids away from sulfur. But, I would venture to guess most will not have success with this.

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You need nano copper particles to really do the job

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I believe that activated alumina can remove Mercaptans and heard that warm pass over a crc with activated alumina can grab sulfur from extracts…let me see if I can remember where to look, it was about “sweetening” the gas, maybe…

Edit, can’t find what I was searching for but came across another article that said activated carbon grabbed the mercaptans from butane and propane and jet fuel and kerosene


There’s data out there on removing sulfur compounds from oils but the problem here is that he’s dealing with elemental sulfur. It’s unreacted and likely in s8 form which is resistant to reactions relative to free sulfur (S2-) and resistant to absorption like the mercaptans (S - carbon chains)

It seems to be a fairly rare thing to be dealing with trace elemental sulfur contamination. Some papers suggests using something like H2O2 could help oxidize the sulfur into SO2 and then the SO2 can be removed with water or a vacuum. However getting down to trace sulfur levels that way hasn’t been successful for me. Maybe it has for others

I have a few more things I’m trying actively both reactions and absorption but no success worth mentioning yet


I can help you with this. I’ve worked on it years ago. Hit me up. It’s pretty easy to remove.

There’s a powder for that too


Damn, thats a win


Your best bet is to just toss it. 80g isn’t worth the headache


This is the real answer.


But if all they have is 80g, or they want to go through it to learn, why dissuade them?


Holy fuckballs that’s awesome that it’s already ready for someone to use!


You’re right, sulfur will be a continuing problem. It’s better to learn how to remediate than avoid it


I could use the info as well. I have an lb+ of concentrate and 40 lbs of trim that made beautiful yellow shatter and yielded 10%, but is contaminated with sulfur.
any help is appreciated

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Look above at the link wax plug posted…
Read the whole post and then you see what makes sense

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If you tried the below in an uncovered pan, I suspect you already have your answer…

Assuming you used a covered pan, you could remove the cover…and the solvent would soon follow

You could also reduce or remove the heat, and use a fan blowing across the surface.

Is the granulated copper safe to use with butane? Is the copper soaked in the oleoresin or used as a filter bed? Previously I left a copper scrubby in a jar of butane honey oil and it all turned green as i believe butane and copper react.
thanks again

Not the butane that was reacting.

Copper and a carboxylic-acid on the other hand…

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