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Choosing filter paper to extract an organic compound from HCl using gr

by kl055
Tags: choosing, extract, filter, organic, paper
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kl055
#1
May25-14, 02:48 AM
P: 26
Do I need to worry about the pore size, or can I just assume that any/all paper filter will remove the organic compound while letting the smaller HCl molecules through?

The molecular weight of the organic compound is listed as "240"
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Yanick
#2
May25-14, 12:26 PM
P: 382
I don't know that plain old filter paper would work on a soluble component of a mixture. Typically if you want to filter something in solution, you need to use ultrafiltration techniques (which have limits to how small the pores can get AFAIK) or find a way to separate the unwanted component into a separate phase (for example precipitation).
kl055
#3
May25-14, 02:49 PM
P: 26
If the solute is ~100um uniform in size (solid outside of the HCl), shouldn't paper filters work? Would be sufficient to use a pore size of 50um, or should I use a smaller size?

Yanick
#4
May25-14, 06:22 PM
P: 382
Choosing filter paper to extract an organic compound from HCl using gr

Sounds fine to me. If it were me, and I were working on an tested protocol, I'd check (qualitatively or quantitatively) the filtrate to get an idea of how well it worked.
kl055
#5
May25-14, 07:40 PM
P: 26
Thanks.

Is normal filter paper sufficient to resist HCl or should I be buying special "hardened" and/or "ashless" filters?
Yanick
#6
May25-14, 08:26 PM
P: 382
I'd imagine it depends on the concentration of HCl. Erring on the side if caution, you're best bet is likely to check with the manufacturer.
kl055
#7
May25-14, 08:36 PM
P: 26
Thanks, I will do that.


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