Originally Posted by
gauvins
I don't know, but : (1) I've left a stainless chain + connex master link (which appears to be plated bronze) to marinate in a jar of mineral spirits for something like 6 months, and the master link appeared to have been corroded. Probably a case of two metals differing on the galvanic scale. I've kept the chain but discarded the master link. (2) Motivated by this thread, I've googled something like [mineral spirits corrosion] and came across
this entry, which says that concentrated spirits are corrosive.
So, I wouldn't bet the farm, especially if different metals are involved. (the less noble might very well have suffered).
Possibly the MS had some hygroscopic ingredient that attracted moisture. Ethanol in gasoline is such an animal.