From: Loris Medici (lorism@tnn.net)
Date: 07/04/03-08:18:27 AM Z
Thanks for the warning...
To be sure: From your message, I understand that sodium sulfide solution
may etch glass slightly but not the the extend of melt(!) or decompose
the bottle - it is safe to hold it in a bottle... right?
Regards,
Loris.
> -----Original Message-----
> From: Sil Horwitz [mailto:silh@earthlink.net]
> Sent: Friday, July 04, 2003 2:06 PM
> To: alt-photo-process-l@sask.usask.ca
> Subject: Re: Sulfuric acid storage
> ...
> Sodium sulfide is, indeed, an alkali. Though a 5% solution
> may slightly etch glass, there will be no harmful effect on
> the solution. The only precaution is when you open the
> bottle, make sure you do it away from any silver compounds or
> sensitized materials, as well as from your nostrils, as
> sodium sulfide solution gives off hydrogen sulfide gas which
> reacts with silver and is toxic. Make sure you handle it with
> plenty of ventilation! -- sil
>
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