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Topic: Best way to collect precipitate from a beaker  (Read 10103 times)

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Offline pzona69

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Best way to collect precipitate from a beaker
« on: December 28, 2007, 02:32:51 PM »
This is kind of a dumb question, but let's say I have a solution of ethyl alcohol and an unknown compound. I need to isolate the unknown compound to identify it, so I boil off the alcohol and have the compound in my beaker. Is there a more efficient way to collect the dry compound than just scraping it out with a wire cleaning brush?
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Offline Mitch

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Re: Best way to collect precipitate from a beaker
« Reply #1 on: December 28, 2007, 02:54:40 PM »
A spatula.
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Offline enahs

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Re: Best way to collect precipitate from a beaker
« Reply #2 on: December 29, 2007, 10:10:38 PM »
Stir the solution really well and filter it and collect it in a filter paper; add more solvent and repeat until you have it all. Vacuum filtration helps speed the process.
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Offline billnotgatez

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Re: Best way to collect precipitate from a beaker
« Reply #3 on: December 30, 2007, 04:56:04 PM »
I always wondered what loss you get due to adherence to the filter paper.
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