KOLM

Thans again, Chen. That helps.

Meaning, to clarify, once damp, it is not anymore CrO3, but a different compound H2Cr2O7 (?).

Wow, Chen, I didnt know. So, even if I were to dry it out some, it would not revert back to CrO3?

Thanks, Chen. I need to dry it to avoid customers complaining about damp chromic acid. I guess I have nothing to loose from trying it, weigh up a small sample, the after a week reweigh. Might start with calcium (I dont have phos pentoxide handy, although a great choice.

Hi, Have some chromic acid and it is very damp as it is very hygroscopic. Does anyone know of a way to dry it out? Maybe over conc sulfuric acid or anhydrous calcium chloride? Could not find anything on the internet. Thanks.