Date: Wed, 17 Jun 2009 14:55:41 -0500
Reply-To: Koster Sandra K <koster.sand**At_Symbol_Here**UWLAX.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Koster Sandra K <koster.sand**At_Symbol_Here**UWLAX.EDU>
Subject: safe disposal of NaOH in THF


I have a colleague who needs to dispose of NaOH (about 1M) in 50:50 THF/water which has turned orange after 1-2 years.  Any thoughts?  For example will a peroxide test be accurate in the presence of the NaOH?  Would it be safe to neutralize the NaOH? 


Sandra Koster

University of Wisconsin-La Crosse

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