[pure-silver] Re: Measuring low levels of silver in fixer
- From: Ray Rogers <earthsoda@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 2 Feb 2010 20:43:03 -0800 (PST)
Yes, but I think mercaptan is actually a class (R-SH) rather than a specfic
chemical... T-butyl mercaptan is mentioned as being used... there may be
others....
Ray
--- On Wed, 2/3/10, BertS <aasainz@xxxxxxxxxxxxx> wrote:
> From: BertS <aasainz@xxxxxxxxxxxxx>
> Subject: [pure-silver] Re: Measuring low levels of silver in fixer
> To: pure-silver@xxxxxxxxxxxxx
> Date: Wednesday, February 3, 2010, 4:15 AM
> The name of the odorant is mercaptan.
> Very small amounts are added to
> natural gas.
>
> Bert
>
> On 2/2/2010 8:43 PM, John Stockdale wrote:
> > Another sulphur smell that you know well is sulphur
> dioxide, the smell
> > of acid fixer.
> >
> > In fact, lots of smelly things contain sulphur. An
> example is the
> > odorant put into domestic gas supplies to make it
> obvious when there is
> > a leak. I think I read that something like one part
> per billion is
> > noticeable.
> >
> > John
> >
> > Peter Badcock wrote:
> >> Just the 'normal' fixer smell of fresh Ilford
> Rapid Fix which slowly
> >> dissipates the longer I leave it out. I guess once
> that smell's gone
> >> it is no good.
> >>
> >> The only sulphur smell I'm familiar with is
> Hydrogen Sulphide ! And it
> >> didn't smell like that. It certainly wasn't an
> ammonia smell.
> >>
> >> rgds
> >> Peter
> >>
> >> On 3 February 2010 10:45, Ralph W. Lambrecht
> <info@xxxxxxxxxxxxxxxx
> >> <mailto:info@xxxxxxxxxxxxxxxx>>
> wrote:
> >>
> >> Is there a slight smell of
> sulfur after it was left out in the
> >> open for a while?
> >>
> >>
> >
> >
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