[Darkroom] Hello and looking for liquid bromine

Ben Rupert meowdip at gmail.com
Wed Jul 6 11:49:04 PDT 2011


I did make it to Noisebridge and the bromine is on the shelf with other
chemicals above the developing table/sink.  I'm on my phone now so don't
want to type a lot but will respond to the other questions and comments
tonight.

Ben
On Jul 6, 2011 11:45 AM, "Christian Rice" <clrice at gmail.com> wrote:
> Ben, a few questions for you:
>
> - Is there anything you need from me to facilitate the opening of an
> account, any initial order requirement? If so, I will supply $$ for some
> sturdy containment vessels and more bromine.
>
> - did you happen to make it by Noisebridge on Tuesday?
>
> - chemical ordering: when I look at liquid bromine, the published qty
> measurement tends to vacillate between mg and ml. There tends to be 99.5%
> ACS (mg), 99.8% (mg) and 99.998% (metals basis, ml). The pricing and
> packaging of the lower two (looking at Alfa's website) vary oddly, and it
> seems the middle ground is the best price point (item #00905, 250mg or
1kg),
> by far. Can you shed any light on what's going on?
>
> - what kind of cap would you recommend on a glass bottle of this
> stuff--PTFE, teflon-lined, or something else?
>
> Sorry to pester, my particular needs may not fall entirely in line with
the
> normal darkroom activities. But then again, it would be my pleasure to do
a
> Daguerreotype demonstration at Noisebridge in the fall, if there was
> interest. It might go well coupled with other chemistry demos, as so much
> of the process deals with basic elements (copper, silver, gold, iodine,
> bromine, mercury). In fact, it would be really awesome to have a chemist's
> commentary to augment my largely practical understanding of the process.
> Could make a neat educational video...
>
> By the way, I do have a fairly large amount of Hg--maybe more than I'll
use
> in my lifetime. The longer I've had my feelers out for such chemicals, the
> more people come out of the woodwork with their old carburetor sync kits
> they want to get rid of. One guy gave me a couple pounds in a single
jar...
>
> On Fri, Jul 1, 2011 at 5:19 PM, Ben Rupert <meowdip at gmail.com> wrote:
>
>> Hit reply rather than reply all, see below:
>>
>> On 07/01/2011 05:09 PM, Ben Rupert wrote:
>> > I'll be over to noisebridge during the day on Tuesday. I'll bring the
>> > bromine then and leave it in the darkroom and well labelled. I'm not
>> > sure if we would have to have some sort of paperwork that we don't have
>> > to buy the mercury when we do want more, but I think everything else
>> > would be fine.
>> > As for web pages to look through for chemicals, try these:
>> > http://www.sigmaaldrich.com/united-states.html
>> > http://www.fishersci.com/ecomm/servlet/home?storeId=10652
>> > http://www.alfa-chemcat.com/en/gh100w.pgm
>> > http://www.acros.com/
>> >
>> > I'm not going to try to set up accounts at all of these places, but
>> > let's get together some lists of things we want and then figure out one
>> > or two to order from.
>> >
>> > Ben
>> >
>> > PS. we will probably need some paperwork proving we are an educational
>> > non-profit. This exists, correct?
>> _______________________________________________
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>>
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