When I was in Texas the second time ( I was there from 1981-1986 and returned in 1991. OK so I'm dating myself) , we were preparing a CAP inspection. I found a brown bottle way in the back of the chemical cabinet. Lo and behold it was the picric acid I saved from the previous go round. I said to my supervisor (Hector for those of you who know us) "Hey man, look what I found? Picric acid." We can't have this around, I'll go put in my truck". I put more water in the bottle and I carried it around a couple of days until after the inspection. Yep, miss those days. The things I do for my buddy.
Joe -----Original Message----- From: histonet-boun...@lists.utsouthwestern.edu [mailto:histonet-boun...@lists.utsouthwestern.edu] On Behalf Of Jackie O'Connor Sent: Wednesday, September 19, 2012 3:20 PM To: tgo...@mt.gov; cing...@uwhealth.org; mcaul...@umdnj.edu; histonet@lists.utsouthwestern.edu Subject: Re: [Histonet] Picric Acid There is a lot of published data on the hazards of picric acid - although I don't think most histo labs have to worry about what they have in house for trichromes and fixation. It did cost me more disposal since we used to use hundreds of gallons a year for fixation of testes. Finding an alternative fixative was a good move for us. Jackie O' -----Original Message----- From: Goins, Tresa <tgo...@mt.gov> To: Ingles Claire <cing...@uwhealth.org>; Geoff <mcaul...@umdnj.edu>; histonet <histonet@lists.utsouthwestern.edu> Sent: Wed, Sep 19, 2012 3:02 pm Subject: [Histonet] Picric Acid A WEB site just for historical interest: http://en.wikipedia.org/wiki/Halifax_Explosion e continue to use picric acid in the lab, but only as an aqueous or saturated olution. The chemical safety guys came out and carefully removed the bottle of moistened" picric acid that we had on the shelf for several years - they were ery excited as it was no longer "moist" - Montana is very dry. Tresa ----Original Message----- rom: histonet-boun...@lists.utsouthwestern.edu [mailto:histonet-boun...@lists.utsouthwestern.edu] n Behalf Of Ingles Claire ent: Wednesday, September 19, 2012 1:17 PM o: Geoff; histonet@lists.utsouthwestern.edu ubject: RE: [Histonet] RE: mouse testis in Bouins/Picric acid hazzards Yes, but why take the chance. There are also other chemicals in the lab the icric acid can interact with to make it even more volitile than it was to begin ith. Dynamite other explosives have the same problem. The older it gets the ore degraded and unstable it becomes. One never knows if or when. I'd like to void traumatically amputating my arms if possible, thank you. laire ________________________________ From: histonet-boun...@lists.utsouthwestern.edu on behalf of Geoff ent: Mon 9/17/2012 9:26 AM o: histonet@lists.utsouthwestern.edu ubject: Re: [Histonet] RE: mouse testis in Bouins/Picric acid hazzards I am with Wayne on this one. While I have not tried to make it explode it does eem to me that the dangers are hyped beyond reason. ears ago an old bottle of picric acid would be discovered in a high school hemistry lab. Horrors! Call the bomb squad! So it was taken out to a large ield, packed with explosives and BOOM! Of course it exploded, it was surrounded ith explosives. Geoff On 9/14/2012 8:58 PM, E. Wayne Johnson wrote: What danger of Picric Acid are you concerned with? _______________________________________________ istonet mailing list isto...@lists.utsouthwestern.edu ttp://lists.utsouthwestern.edu/mailman/listinfo/histonet _______________________________________________ istonet mailing list isto...@lists.utsouthwestern.edu ttp://lists.utsouthwestern.edu/mailman/listinfo/histonet _______________________________________________ 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