Some of us will have noticed by now that PTFE particulates are very fast disappearing from the entire lubricant market, often replaced by newer "ceramic" particulates similarly intended to reduce friction.
I can no longer buy DuPont 100% Teflon Dry Lubricant in the spray can (what I used for years to mix my own chain lube in a flat-sided squeeze bottle).
I'm hoping that the newer "ceramic" particulates used in their similar packaging are at least nearly as effective as the PTFE/Teflon, though I have no idea.

The main reason for this change is I believe the extremely noxious/dangerous/deadly fumes that emanate from any incineration of PTFE (as might happen when a shop rag, near-empty container or chain, contaminated with PTFE, is disposed of).

So as a word of warning, perhaps it's not a good idea to use any solvent having been used to clean chains to assist with igniting charcoal or fires (especially burning near people or food).
A better way to dispose of such solvent is to mix it in with your used motor oil, as the re-cyclers fully expect the used oil to be contaminated.