Linda,
There is a method in AFIP Laboratory Methods in Histotechnology by Edna B. Prophet, et al. on page 26 using thioacetamide to precipitate mercuric chloride. Its a rather lengthy procedure but it may be worth your while if you are having a problem with disposing of mercuric chloride solutions.
Dave

>>> linda coscarelli <lcosca@tc3net.com> 09/23 7:24 AM >>>
Good Morning,

I have a question.  Is there anyway of reducing/neutralizing mercury
fixatives (specifically B5), so that it can be poured down the drain?  I
know that I have seen this discussion before, but because I need the
information I can't find it anywhere.


thanks,
linda
bixby medical center
adrian,mi