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Drying of Organic Liquids

G.Patton
Sep 11, 2022
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drying agent drying of organic liquids mgso4 na2so4

Reactions: Looooow, bblanco, Loooow and 2 others

Hi, I have read somewhere that following drying the drying agent should only be removed by gravity filtration and not by vacuum. Can someone confirm if this is really so? What is the explanation?

diogenes said:
Hi, I have read somewhere that following drying the drying agent should only be removed by gravity filtration and not by vacuum. Can someone confirm if this is really so? What is the explanation?

Sorry for a late reply. Drying agent can destroy filter paper or clog Schott filter.

What would be the best drying agent for acetone, methanol, IPA and diethyl ether? I can’t find a precise answer googleing

Acetone and IPA, 3a molecular sieve is the best choice in my strong opinion. It can dry chemicals down to 10s of ppm over a period of days, is recyclable and doesn't need filtered off. It's cheap and inert. It has it's limitations, anything smaller than water it won't dry

Frit Buchner said:
Acetone and IPA, 3a molecular sieve is the best choice in my strong opinion. It can dry chemicals down to 10s of ppm over a period of days, is recyclable and doesn't need filtered off. It's cheap and inert. It has it's limitations, anything smaller than water it won't dry

Do you activate the 3a or just rinse the dust off and put it in the solvent?

If you get it wet, you'll have to "activate " it, which means dry it. The first time you use it it is clean/ any dust is at the bottom

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