Benzene in butane

[SolventDirect]

I cannot speak to your application, sop’s or approve the legal disclosure or dissemination of a company email that likely included a confidentiality notice, but it is not Solvent Direct’s responsibility to tel you how to run your business.

To what degree you may or may not need to distill something depends on your process and your application, but exposing your people, system and product to toxic mystery oil accumulations above the COA standard because your supplier chooses to refill cylinders without decontamination is on you and your supplier.

Many of our customers say they do not need to distill our gas because it meets their needs as is, but this is relative to your needs. For instance, the aerospace industry requires research grade 99.999% gases. If you want to spend your time distilling gas instead of extracting, you should just buy industrial grade propane.

Our recommendation is to verify all active ingredients in your process per FDA guidance:

Q7A Good Manufacturing Practice Guidance

[WhereAreTheStones]

@SolventDirect

or approve the legal disclosure or dissemination of a company email that likely included a confidentiality notice

Fair enough. I stand by my statement.

[pdxcanna]

Lol, “we didn’t do that, but don’t disclose that emails contents”

And then a double down with no distillation - oh wait, edited that out before my comment, but not quick enough for the system

Whoever runs the social media accounts for you guys is wild

[FicklePickle]

Lol, still suggesting it as a possibility. Scummy

[pdxcanna]

I fucking hate marketers, especially the hamfisted gaslight-y type. Big American psycho vibes

[SolventDirect]

[pdxcanna]

Hope those aren’t confidential screenshots

[SolventDirect]

We are probably the smallest family owned and operated specialty gas distributor in the country. We care deeply about the quality and integrity of extracted products, but it is not our responsibility to tell you how to run your lab.

[MagisterChemist]

Here’s my take. Mystery oil is one thing. Impurities seen on a COA may have some crossover, but may not.

What is mystery oil? It is nothing other than “the weird shit left after i distilled my butane”.

First of all! Someone needs to actually scoop this stuff up into a jar, send it to a testing lab, and make it no longer be a mystery.

Then, once we know what that gunk is, we need to see if it’s stuff that’s even observable via the test methods used to produce these COAs.

That’s the only way we will get this “how much do you need to distill” conversation under control…

[SolventDirect]

For the most part, mystery oil is not a mystery. That’s just what industrial suppliers want you to believe.

Even new cylinders will contain industrial stamping lubricant residue and metal burring from the cylinder manufacturing process if they are not decontaminated before refilling.

If you top cylinders repeatedly without cleaning, you begin to accumulate the impurities on the COA. To what level these impurities accumulate depends on the length of the dip tube, the total weight of the refill and the amount of refills since it was last decontaminated or verified not to have impurity.

Example: If the gas is 99.5% minimum and you refill the cylinder to 100lbs, then you are talking about 1/2 pound of variable contaminate. If the diputube is cut short (which we see from our competitors regularly) then you are leaving behind some if not all heavy metals and other impurities. If you refill a second time, but the cylinder already has 10lbs left over from the previous refill, then what is the ratio of impurity to pure product?

Hard to say without cylinder decontamination. Yes, we could pay for testing to determine if there are dangerous impurities lingering, but we found it more cost effective and consistent with other safety standards to just decontaminate the cylinders before refilling.

Additionally, the moisture content and impurities sitting at the bottom of the cylinder create corrosion and decomposition of the carbon steel cylinder. This is why there are federal requirements for requalifying cylinders every 5-10 years depending on the manufacturer. The decomposed carbon and rust become part of the toxic cocktail.

Finally, the potential for back flow contamination from other users without decontamination before refilling really opens Pandora’s box. The pesticides, cross contaminations and other variables that could be introduced by other users backfilling is limitless.

This is why we use the coffee mug example. No matter how clean the pot of coffee is, a dirty mug compromises the chain of custody.

Visit our website and click shop + hydrocarbon gas to see video of mystery oil being washed out from a cylinder.

We are all for more research and will support anyone interested in studying this more closely with us.

[Dred_pirate]

@Graywolf and @SkyHighLer “dag nammit I can’t remember his name”, the guy who was going to be flying his kite in the park in so cal. But, they had done this testing a long time ago.

[TRIPPIE]

Sky highler

[Dred_pirate]

I was thinking sky and then the “L”. Appreciate it

[ApisLabs]

The good old icmag days!

[Pupparoo]

I’m over solvent directs spam. Flagging away.

[MagisterChemist]

And what were the results? Do you have them?

[pdxcanna]

8.12 Butane/Propane Mystery oil - GrayWolf's Lair

[Dred_pirate]

Besides the link @pdxcanna put. I believe that @cyclopath has all of his research papers. I think.

[cyclopath]

not I.

I think @Rumplstilskin got those

All my stuff, solvents, equipment, tools for free, SoCal

To add my 2 cents to this thread, John is one of the most intelligent men I’ve met in my 57 years. He is maticulis, highly organized and very much the alchemist, we all wish tol be. Together I safely secured all his solvents in double containment, tempature controlled storage. As for Johns life time collection of books, eat your hearts out guys/gals. Lol. Dont ask, I’d never kiss and tell. All his equipment is in good hands. Ive extended an offer here publicly for John to travel North, wi…

[MagisterChemist]

Unfortunately, that can’t be considered to be comprehensive in my books. He submitted mystery oil itself, not just butane – and they returned a list of contaminants, that, all put together, only account for a percent or two of the total weight… What’s all the rest of it??

They tested using GC/MS, which can only detect volatilable contaminants. Metals and polymeric materials like silicone grease, won’t show up.