As I was pasting together my project with white liquid glue I noticed a warning on the back: DO NOT FREEZE. Why is frozen glue so dangerous? I would of had experimented on this myself, but I am short on time, glue, and freezer space. It would be greatly appreciated if make query was answered.
WAG: Freezing glue probably isn’t dangerous, it just makes it less adhesive.
I do happen to have some glue, time and freezer space, so I’ll report my findings later.
White glue is an emulsion of water and polyvinyl acetate (PVA). If you freeze it, the emulsion breaks down and the glue turns into coagulated lumps, useless for anything.
I imagine it would also expand and break the container if it was full.
What if you wanted some coagulated lumps of PVA to look at? Seems to me freeze-thawed white glue would work pretty well for that.
My favoritest bookbinding glue is made by Lineco. I have to stock up in the fall. They won’t ship it to Wisconsin from Dec-Feb because it might freeze in the trucks.
Well, sure, if you want clots of coagulated glue to throw at badgers, then yeah, it’s not a completely useless exercise. I appreciate the correction (no, really - I should know better than to express absolutes on a topic like this)
Who (besides you) said it was dangerous?
A better question to ask would be “Why shouldn’t it be frozen?” Think about that.
In idle moments, I dropped white glue into liquid nitrogen. It generated little white solid balls of glue, which could be conveniently dropped into hard-to reach places. When it unfroze, it melted into white glue again, spread out, and set. Maybe if you freeze the stuff in an ordinary freezer it breaks down, but supercooled to LNT it stayed just fine.
There’s a great potential there for specialized application. Also for some really nasty pranks.
Can that be done with cyanoacrylate? I’m thinking: Make little frozen balls of superglue, coat them (while still frozen) with wax or some other airtight, but fragile material, then let your imagination run wild…
[bold added]
You’re EVIL! Any tips on where you get LN, cheap? 
Flash freezing is always a different result then the normal slow freezing of water laden organics. That would be why Clarence Birdseye made a bundle of money inventing the process for flash freezing vegetables. The glue manufacturer is certainly not talking about flash frozen glue on the label.
Sorry it took so long. I forgot I left the glue in the freezer.
The glue is lumpy and has an irregular consistency, but it is still adhesive.
At least one brand of white glue, Aleene’s Tacky Glue, gets thicker when it’s frozen. Perhaps the warning isn’t because the white glue is dangerous when frozen, but simply because freezing it would cause it to thicken when the user wasn’t expecting thick glue.
Excellent job of doing a practical test, though! What brand and type of glue was it? Elmer’s, for paper?