"Dry Over"

[Drug_Phreak]

When a recipe says to dry a solvent over a certain solid does that mean to put the solvent in a desiccator with that solid on the bottom? I've read that desiccators should be used to keep solvents dry and shouldn't be used to actually dry solvents, but what I read might be wrong. Is this true?

[Rhodium]

Post 439332

(GC_MS: "Purification of laboratory chemicals: drying", Chemicals & Equipment)

[Drug_Phreak]

Good read... thanks Rhodium. I have another question... I have a container of calcium chloride and I was wondering if I could put some of it in the oven for a while to make it anhydrous or do I need to buy it in anhydrous form? Anyone know?