IF I RECALL, THERE IS A CERTAIN AMOUNT OF ALLOWABLE MOUSE DROPPINGS IN HOT DOGS. PROCESSING KILLS ANYTHING THAT DROPPINGS MIGHT CARRY .. THINK ABOUT THAT AT NEXT BBQ
Wait, what? FOUR HUNDRED WATTS of X-RAYS? I'd expect the acetone to evaporate in more like 18 seconds. Followed after a short time by the copper. I guess I'd better remember not to soak any copper in acetone right next to the synchrotron, then.
Well I did go back and re-read it, and I didn't see any possibility that machine ran for that long. I re-read twice and although the xps unit was specified , the ambient light was not as to source or level for 18hrs. The XPS was quantitized for source and level , but not how many times it was ran and when. Anyway, I do know how some of these experiments sourced by outside supporters tend to go in certain directions, but thats higher education. I asked 3 people who do a lot of copper tubing/fixture work and they still use acetone and if I had any reactions with it, I would certainly not use or recommend it. YMMV, Jim
These discussions of the pros and cons of using acetone on copper have been going on in coin forums for at least 20 years that I know of. And it's pretty much always the same, some it's harmless, others say don't do it. And until I did the research and dug up that Stonybrook article years and years ago, there had never been an article/paper even written on the subject that I could ever find or that had ever been mentioned by anybody else. But to me, that didn't matter. The only reason I even went looking for it was to see if I could find anything science based to confirm what I, and numerous others, had been seeing with our own eyes for years ! Namely that, sometimes, when acetone was used on copper coins, the coins would turn weird colors - not always, sometimes. Personally, I've always been a pretty strong believer in what I see with my own eyes, especially when it happens many times. When that happens I don't need books, articles, or papers to explain it to me. That's because I don't care WHY it happens. To me, it only matters that it DOES happen ! The reason it happens is completely immaterial. Also, when you consider that there is an alternative choice of solvent to use on copper, namely xylene, that does everything for you that acetone will do, and some things that acetone won't, and that NEVER causes copper to turn weird colors. Risk on one hand - that you have seen with my own eyes - no risk on the other. Well, I don't know about anybody else, but I don't need to be a rocket scientist to make a choice like that ! Nor do I need a rocket scientist to tell me that I'm making a bad choice. Especially when even they will agree that xylene will do what needs done - with no risk. But hey, that's me.
Unfortunately here in Calif. they don't allow Xylene to be sold to the public. I had to buy mine from a out of state seller on Ebay . We can still buy Acetone at this time, so I bought a gallon at Lowes. Who knows when Calif will ban Acetone.
Amazon lists xylene @ $56 gallon shipped from the manufacturer. No indication of location limitation.
As a Calif. resident when I go on Amazon I see Sunnyside xylene and it shows "Not for sale in California and other VOC restricted areas". And it's been some time since you could buy it in Calif. Lowes and Home Depot.
You are correct on sunnyside , it comes up such on my visit also, but I was referring to the listing below , where the company selling it direct ships to the customer. https://www.amazon.com/Xylene-Technical-Grade-Gallon-Metal/dp/B01018E0Z6/ Jim
