Re: freezing-resistant formaldehyde
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From: | rkline@emindustries.com |
To: | oshel@terracom.net (Philip Oshel) |
Reply-To: | |
Date: | Thu, 26 Aug 1999 10:01:45 -0400 |
Content-Type: | text/plain; charset=us-ascii |
Hi Phil,
The melting point of a pure substance is the same as the freezing point.
The terms are interchangeable. It depends if a substance is being heated
or cooled. Formaldehyde has a melting point/freezing point of -92 C.
This type of information can be found in a chemistry book such as Lange's
Handbook Of Chemistry.
Rande Kline HT (ASCP)
Technical Services
EM Science
oshel@terracom.net (Philip Oshel) on 08/24/99 06:14:16 PM
To: histoNet@pathology.swmed.edu
cc:
Subject: freezing-resistant formaldehyde
Histofolks,
A year or so ago there was a discussion on "freeze-resistant formalin".
I've searched the archives in Histosearch to no avail. Or lots of travail,
if I read every message that comes up with freeze & formalin. None come up
with "freeze-resistant formalin".
There is such a thing sold by someone as I recall, but how good is it for
histology? EM level histology? How low can the temperature drop before
normal 37-40% formalin freezes anyway? Etc. ...
Replies by vendors directly to me are welcome.
Phil
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Philip Oshel
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oshel@terracom.net
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