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megalomania
June 22nd, 2003, 03:56 PM
stanfield
Frequent Poster
Posts: 176
From: FRANCE
Registered: MAY 2001
posted 07-16-2001 04:53 AM
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By distilling H2SO4 and NaNO3, i produce my own nitric acid but after the distillation, the stuff who remains in the boiling flask is hard like rock and is very difficult to eliminate...
anyone has a tip for cleaning this shit ?

thanx



John456
Frequent Poster
Posts: 105
From:
Registered: MAR 2001
posted 07-16-2001 12:36 PM
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Put some hot vinegar (5% acetic acid) in and let it sit over night. In the morning if its not all dissolved youll be able to break it up and pour it out.


stanfield
Frequent Poster
Posts: 176
From: FRANCE
Registered: MAY 2001
posted 07-16-2001 01:30 PM
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Is more concentrated vinegar will increase the speed of the "cleaning" ?
if yes, could it possible to distill vinegar to concentrate it ?

sorry for my bad englsih ...

and thanx !



John456
Frequent Poster
Posts: 105
From:
Registered: MAR 2001
posted 07-16-2001 02:47 PM
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It may but i wouldnt bother, as concentrating it may take longer than using the 5% stuff to clean it =). To concentrate acetic acid you must first convert it to sodium acetate and distill it with sulfuric acid. More info is on mega's page.


stanfield
Frequent Poster
Posts: 176
From: FRANCE
Registered: MAY 2001
posted 07-17-2001 04:25 AM
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could you give me the exact page plz ?
thanx !


John456
Frequent Poster
Posts: 105
From:
Registered: MAR 2001
posted 07-17-2001 12:52 PM
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http://roguesci.org/megalomania/synth/synthesis1.html#acetic you lazy bum

Trinitrotoluene
June 22nd, 2003, 08:42 PM
Another way you can get that NaHSO4 or whatever waste out is to add 2 times the volume of water ratio of waste,then put it on some heatsource and bring it to a boil.After a good 10 minutes of boil over half of it will dissolve into the soloution and the other can be broken into smaller pieces without any hastle. It works pretty well for me as I use 500ml erlinmyers flasks.