From: "Wawzyniecki Jr, Stefan" <stefan.w**At_Symbol_Here**UCONN.EDU>
Subject: Re: [DCHAS-L] saturated picric acid solution
Date: May 22, 2013 9:00:42 AM EDT
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <B45065CA11547E4BB3E9D911C1BEAE5A2874FDCA**At_Symbol_Here**>

Our  waste  vendor  would  Lab Pack  it.    This  is  not  a  high  hazard  item.


-Stefan Wawzyniecki,  CIH,  CHMM



From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Ellen M. Sweet
Sent: Wednesday, May 22, 2013 7:29 AM
Subject: Re: [DCHAS-L] saturated picric acid solution



It has to be disposed of as hazardous waste and this is never inexpensive. But, being that it is in solution it'll be cheaper than if it was dried out!

Ellen Sweet
Laboratory Ventilation Specialist
Environmental Health and Safety
Cornell University

From: DCHAS-L Discussion List [dchas-l**At_Symbol_Here**MED.CORNELL.EDU] on behalf of Strode, Kyle [strode**At_Symbol_Here**CARROLL.EDU]
Sent: Tuesday, May 21, 2013 3:10 PM
Subject: [DCHAS-L] saturated picric acid solution

I discovered a bottle of saturated picric acid solution (opened in 1998) in a plastic-capped plastic bottle our chemical inventory. There is about 1-L of the solution left in the bottle. No-one needs it for staining, and I’d like to get rid of it.


It looked like there was some drippage around the neck and cap, so I rinsed it for about 30 minutes under a stream of DI water until all of the material was gone. Then I opened the cap and wiped with a sponge around the cap and rinsed thoroughly with DI water so that there was no apparent presence of material in the vicinity of the cap.  After thoroughly cleaning the exterior of the bottle, I recapped it and put it back on the shelf until I can figure out what to do with it.


In the saturated solution form (I believe this means 1.2%), is there an inexpensive and acceptable way to dispose of it?


I have found dramatically conflicting reports of dangers associated with solutions of picric acid in my web searches.




Kyle Strode

Previous post   |  Top of Page   |   Next post

The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.