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Author: Subject: How to get NaOH from household chemicals ?
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[*] posted on 18-3-2011 at 11:01

Quote: Originally posted by metalresearcher  
Drain cleaner contains Al snippets which makes it unsuitable for electrolysis and it is more dangerous in the use it is intended for as H2 gas is released when adding water to it.

Wouldn't Al metal be extremely easy to remove from NaOH? For example why not just dissolve the NaOH in water, filter out any insolubles (which should include Al metal) then boil off the water?

EDIT: I didn't think that through before I replied. -OH ions react with Al metal so a reaction would occur as soon as you dissolved the NaOH. The product of that reaction may be easy to separate from NaOH though.

[Edited on 18-3-2011 by cnidocyte]
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