Glues/Adhesives That Are Safe *around* Coins.

Hmmm... Hot glue might have the least vapors and such. I've also found that hot glue can sometimes be more dependable than epoxy depending on what you're gluing down.

svslav, LOL

You did mean AROUND coins, not on them of course. By this I suppose you mean your planning on gluing something together with ocins inside. Regardless of how you use any glues around coins the smartest thing is to contact the manuafacturer of any such product. People here or almost anywhere, unless they work for such a conpany, can and may say anything without knowing the actual results. If you do always ask for customer service or tech support. Be explicit as to your intentions on using their product and you may want to state thie conversation is being recorded for legality purposes.
For the usage of any adhesive note the primary method of usage is something will evaporate from the substance during curing. With many such products, this process may continue for an extensive period of time. For example note on many of the epoxy containers that it will set up in 5 minutes but allow 24 hours for complete curing and/or hardening. Some plastic glues for model building have an odor for days meaning a gas of some type is being emitted.
Regardless of your usage of any product near coins or any item for preservation purposes, contact the manufacturer.

Is it an application where plain old Elmer's Glue will work? That stuff is as close to edible as any glue I've ever heard of.

Oh, there's a lot of stuff that kids are around, and sometimes it's geared towards the kids, and sometimes some kids try to digest, but I wouldn't have my coins anywhere near that stuff.

I guarantee it, I remember a kid in my kindergarten class who would eat that stuff all the time

Yeah, like vinegar.

I used to use hot glue on my flips to seal them as much as I could. I never saw any adverse effects from it. In fact I still have some coins that are sealed that way. But I have been steadily going through them and breaking them open to put the coins inside Kointain holders, then putting that in a flip and then putting tape around the edges of the flip. Yeah, its a tiny bit of work and its certainly not completely air tight but it does have a couple layers of protection against the environment now.

Obviously I cant guarantee hot glue is safe, I can only attest to my own use of it. And as someone suggested your best bet is to contact the manufacturer directly and ask direct questions declaring clearly what you intend to do or use it for.