[Histonet] RE: picric acid

[Sherwood, Margaret]

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)
msherwood <@t> partners.org

-----Original Message-----
From: histonet-bounces <@t> lists.utsouthwestern.edu
[mailto:histonet-bounces <@t> lists.utsouthwestern.edu] On Behalf Of Goins, Tresa
Sent: Friday, February 03, 2012 2:04 PM
To: Perry, Margaret; histonet <@t> 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-bounces <@t> lists.utsouthwestern.edu
[mailto:histonet-bounces <@t> lists.utsouthwestern.edu] On Behalf Of Perry, Margaret
Sent: Friday, February 03, 2012 11:51 AM
To: histonet <@t> 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

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