Sciencemadness Discussion Board

Fractional Freezing of 30% acetic acid.

6dthjd1 - 11-1-2025 at 15:28

I've recently acquired a source of 30% acetic acid aqueous solution. My question is could I get a concentration in excess of 75% using fractional freezing.

I've found a source that allows me to use ethyl acetate as an entrainer to remove the water entirely. Nevertheless, as ethyl acetate can be harder to acquire it mayb be best to use as many fractional freezings as possible and practical

jackchem2001 - 11-1-2025 at 17:05

Search for a binary eutetic phase diagram for acetic acid and water. You won't be able to increase concentration past the eutectic by fractional freezing alone. Perhaps a distillation once you get to this point would remedy this

RU_KLO - 13-1-2025 at 07:28

This "theme" has been around Sciencemadness long enough,

Use the search engine.

just the first ones I found:

https://www.sciencemadness.org/whisper/viewthread.php?tid=16...

https://www.sciencemadness.org/whisper/viewthread.php?tid=15...