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iowapanda

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Apres  evaporation  de  l¡¯ethanol,  les  residus
sont  rinces  avec  l¡¯tther  diethylique  anhydre  (20  ml);
les  sels  d¡¯ammonium  quaternaire  Sa-x  sont  obtenus
sous  forme  de  solides  tres  hygroscopiques.

[ Last edited by iowapanda on 2012-7-24 at 00:28 ]

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°®ÓëÓêÏÂ: ½ð±Ò+1 2012-07-24 21:49:36
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