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• 16:18, 17 January 2008 Walkerma (talk | contribs) uploaded File:Sulfate clump.ogg (Use of sodium sulfate for drying an organic solvent (ethyl acetate in this case). Note how the crystals are all clumped at the end - so more need to be added to make the liquid dry. Category:Videos Category:Chemical procedures [[Category:Inorgan)