Drying ammonium nitrate, dessicator

[EventHorizon]

I had a quick question. Which would be the best way to dry ammonium nitrate. In a dessicator over CaCl2, or saturating in ethyl/methyl alcohol then drying in a dessicator. Will the CaCl2 remove the water from the AN. My vacuum will only generate 25"(125 torr I think). I've done it on a heat source after saturating in denatured alcohol, but would rather not.

Thanks all.