RE: [Histonet] Picric Acid

From:Tony Henwood

John and Jim,

A recent newspaper article in Sydney may be appropriate here. The gist of it
is as follows:


About 160 people were evacuated from a factory and homes in Sydney yesterdat
afternoon after authorities identified a dangerous chemical.
NSW Fire Brigade spokesman Ian Krimmer said a small amount of an acid, which
had the potential to react violently, had been found in a jar and removed
from a factory in Kingsgrove.
"A small amount of picric acid in a jar [was] in an unstable condition."

Tony Henwood JP, BAppSc, GradDipSysAnalys, CT(ASC)
Laboratory Manager
The Children's Hospital at  Westmead,
Locked Bag 4001, Westmead, 2145, AUSTRALIA.
Tel: 612 9845 3306
Fax: 612 9845 3318

-----Original Message-----
From: John Kiernan []
Sent: Tuesday, 11 November 2003 4:12 PM
To: jim; Histonet Listserver
Subject: Re: [Histonet] Picric Acid

Wash under a tap. Put some water
in the jar if it has dried out.

Picric acid explodes if its temperature
goes above 300C. Sources: Lange's
Handbook of Chemistry, just checked;
also remembered from various textbooks 
read over the years.  This cannot happen 
in the presence of liquid water. 

Nearly all anecdotes about picric acid
explosions in labs are urban legends
(= untrue). For confirmation of this
assertion, check it out with Google,
but allow a couple of hours and use
your brain to evaluate the produce.
> jim wrote:
> Has anyone information or data on the safe disposal
> of Picric Acid (crystals have formed on lid of
> bottle).
> Thanks
> Jim Manavis
> Senior Hospital Scientist
> Department of Neuropathology
> Institute of Medical & Veterinary Science
> Adelaide, SA, 5000
> Australia
> Phone: 61-08-8222-3668
> FAX: 61-08-8222 3204
> e.mail:
> Disclaimer: Not this little black duck!

John A. Kiernan
Department of Anatomy and Cell Biology
The University of Western Ontario
London,   Canada   N6A 5C1

Histonet mailing list

This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom they
are addressed. If you are not the intended recipient, please 
delete it and notify the sender.

Views expressed in this message and any attachments are those 
of the individual sender, and are not necessarily the views of The
Children's Hospital at Westmead

This footnote also confirms that this email message has been 
virus scanned and although no computer viruses were detected,
the Childrens Hospital at Westmead accepts no liability for any 
consequential damage resulting from email containing computer 

Histonet mailing list

<< Previous Message | Next Message >>