Precipitate in Additive F

I’ve got a bunch of crystals floating in my additive F. I tried shaking it up to get them to redisolve into the liquid but it hasn’t been that successful as I have little bumps in a coat of epoxy I put on last night.

Is it safe to heat it? Better to just shake it for a long time? I am assuming the crystals are an important ingredient.

Add F begins to congeal a little below about 55 degrees or so. Warm it up a little.

warm it up carefully, as it is quite flammable.

Last winter I warmed some water on the stove, then stuck the can in a ziplock bag and let it sit for a minute, and it looked and worked fine.

Thanks guys

Kind of coagulates into what looks like small wax lumps in the F. I’ve had it happen at 70*+. Could it be F that is old and run out of shelf life? High humidity maybe? I also keep a small amount in a bodi bottle for measuring, and I have to slightly loosen the cap so the heat of the day won’t fill the measuring cup on top with F. Could that be the reason?