I concur. The problem is the dried picric acid. We used it so infrequently and had a large bottle, that I had Safety dispose of it.
Peggy Peggy Sherwood Lab Associate, Photopathology Wellman Center for Photomedicine (EDR 214) Massachusetts General Hospital 50 Blossom Street Boston, MA 02114-2696 617-724-4839 (voice mail) 617-726-6983 (lab) 617-726-1206 (fax) msherw...@partners.org -----Original Message----- From: histonet-boun...@lists.utsouthwestern.edu [mailto:histonet-boun...@lists.utsouthwestern.edu] On Behalf Of Goins, Tresa Sent: Friday, February 03, 2012 2:04 PM To: Perry, Margaret; histonet@lists.utsouthwestern.edu Subject: [Histonet] RE: picric acid The picric acid around the cap would not be "1%". The acetone is long gone. Wipe the threads or pipette the reagent from the bottle. Our chemical safety office informed us that friction from removing a cap can be enough to set it off. Tresa -----Original Message----- From: histonet-boun...@lists.utsouthwestern.edu [mailto:histonet-boun...@lists.utsouthwestern.edu] On Behalf Of Perry, Margaret Sent: Friday, February 03, 2012 11:51 AM To: histonet@lists.utsouthwestern.edu Subject: [Histonet] picric acid I am curious how big an explosion there would be from 1% picric acid in acetone if a little dried around the cap. Margaret Perry HT(ASCP) Dept of Veterinary and Biomedical services Box 2175 South Dakota State University Brookings SD 57007 605-688-5638 _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail. _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet