Re: chemigrams (again?)/ cyanide

Cyanide gas formation? Hmmm.... I've heard *strong* acids might release
this; any official consensus on this?

thanks,
k

MARTINM wrote:

> It looks like heat or acids like acetic acid in contact with thiocyanates
> (potassium/ammonium/sodium thiocyanate) are likely to form cyanide.
>
> Martin
>
> ----- Original Message -----
> From: "Jonathan Bailey" <jon@jonathan-bailey.com>
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Friday, September 24, 2004 3:48 PM
> Subject: RE: chemigrams (again?)/ cyanide
>
>
>
>>Martin,
>>
>>You stated:
>>Thiocyanate is actually a fixing agent (silver halide solvent)...
>>Regarding the acetate-buffered thiocyanate solution, it might be related
>
> to
>
>>the risk of releasing cyanide when thiocyanate is brought in contact with
>>acids.
>>
>>I always understood that cyanide is "fixed" and stable in substances like
>>sodium thiocyanate or pot. ferracyanide (and/or ferricyanide...) etc.
>>
>>Jon
>>www.jonathan-bailey.com
>>
>>
>
>
>
Received on Tue Oct 19 05:25:41 2004