There are no silly questions, only things people know or don't know.

I have never heard that flushing periodic acid is a problem.  I presume it 
would fairly rapidly encounter reducing agents and lose its excess oxygen, 
converting to an iodide.  There is a  shortage of iodine compounds away from 
the sea (hence historical goitre), so I think the amount flushed would have 
little effect.  Check your local municipal water supply company if you have 
to know for sure.

Bryan Llewellyn


----- Original Message ----- 
From: "Cristina Nunes" 
To: 
Sent: Monday, October 09, 2006 10:12 AM
Subject: [Histonet] Periodic acid vs environment


> Dear all,
> I have been trying for the first time the PAS staining and have a
> "practical" problem. How harmful is the periodic acid for the
> environment? Is it something you may throw out without any harm or do I
> need to store it for a specialised discard?
> I hope it is not a very silly question and many thanks for your help.
> Best regards,
> Cristina Nunes.
>
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> Histonet mailing list
> Histonet@lists.utsouthwestern.edu
> http://lists.utsouthwestern.edu/mailman/listinfo/histonet
> 


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