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Photo Forum / Film Photography / Darkroom / September 2006KRST label lists 22 g/l Sodium Selenite
September 14, 2006, from Lloyd Erlick, I haven't had to buy selenium toner since 1999, when I bought two one gallon containers. Now I wish I had bought five or ten. Naturally, Kodak no longer makes gallons. The quart I bought cost me C$30 by the time I paid the restraint of business (ROB) tax. I don't remember seeing special information for Australia before. Here is what the label says: [quote] ADDITIONAL INFORMATION FOR AUSTRALIA ONLY CONTAINS: 22 g/l Sodium Selenite. FIRST AID: If poisoning occurs, contact a doctor or Poisons Information Centre. If swallowed and if more than 15 minutes from a hospital, induce vomiting, preferably using Ipecac Syrup APF. [unquote] Ipecac! Let me out of here... (and does KRST contain a different amount of Sodium Selenite elsewhere? If not, why is it additional information for Oz *only*?) Is this useful information for making our own selenium toner? regards, --le ________________________________ Lloyd Erlick Portraits, Toronto. website: www.heylloyd.com telephone: 416-686-0326 email: portrait@heylloyd.com ________________________________ -- > CONTAINS: 22 g/l Sodium Selenite. > Is this useful information for making our own > selenium toner? 22 grams/liter, period. They must have the concentrate in mind. IIRC, KRST should be an easy brew. The selenite may be hard to come by as it is very toxic. Perhaps a real money saver if you can get a hold of some. Dan "Additional information for Australia only.." I would think that translates as "the only jurisdiction that currently requires this additional information" darkroommike p.s. Somewhere I have a couple recipes for selenium DIY formulas but have never been inclined to try them, but if there's any interest and time permitting I'll see what I can round up. > September 14, 2006, from Lloyd Erlick, > [quoted text clipped - 39 lines] > email: portrait@heylloyd.com > ________________________________ On Sat, 16 Sep 2006 10:17:00 -0500, darkroommike <darkroommike@cableone.net> wrote: >Somewhere I have a couple recipes for selenium DIY formulas but >have never been inclined to try them, but if there's any interest and >time permitting I'll see what I can round up. September 18, 2006, from Lloyd Erlick, I'd be curious to see them, if it's not a lot of trouble. I'm not clear whether a home brew selenium toner involves powdered pure selenium or Selenium Selenite. I just bought a quart of Kodak selenium toner (KRST). No more gallons sold by Kodak. Far too expensive. Might as well change all my proclivities and tone everything in gold. Funny, you don't look bluish ... regards, --le ________________________________ Lloyd Erlick Portraits, Toronto. website: www.heylloyd.com telephone: 416-686-0326 email: portrait@heylloyd.com ________________________________ -- ... >I'm not clear whether a home brew selenium >toner involves powdered pure selenium or >Selenium Selenite. ^^^^ ... Wake up, Lloyd, that would be Sodium Selenite ... >regards, >--le [quoted text clipped - 4 lines] >email: portrait@heylloyd.com >________________________________ The Australian MSDS documents tend to have more detail. Maybe our government is looking after us for a change. They list ingredients present in small quantities that often do not appear in USA MSDSs. There are several do it yourself selenium toner formulas. I will dig some up. One sort involves dissolving selenium powder (selenium is an element in the same group as sulphur) in sodium sulphite. Another involves dissolving selenium powder in sodium sulphide. This might be a very good toner for archiving, since the combination of sulphide toning and selenium toning ought to be pretty good. Both involve boiling the solution for some time to facilitate dissolution. Definitely something to do outdoors or in a fume cupboard. > The Australian MSDS documents tend to have more detail. Is there one for hydrogen hydroxide? > Maybe our government is looking after us for a change. May God have mercy. Do you _really_ want the government looking after you? > Both involve boiling the solution for some time to facilitate > dissolution. Definitely something to do outdoors or in a fume cupboard. Inhaling the powdered selenium/selenium salt is to be avoided. A bit like Pyro in that way. Of course when spilled KRST dries it leaves behind selenium powder. Best not to think of these things too much.  SignatureNicholas O. Lindan, Cleveland, Ohio Darkroom Automation http://www.nolindan.com/da/index.htm n o lindan at ix dot netcom dot com >Of course when spilled KRST dries it leaves >behind selenium powder. Best not to think of these things too much. September 18, 2006, from Lloyd Erlick, Nothing spilled gets to dry. Rinsing now is easy, scrubbing later is not. Also, it's an excellent opportunity to use that handy squeegee... On a related note, I've had a wood duckboard in my processing sink for decades. I'm now in a different location, in a different part of town, and my newly made, number two pine duckboard has developed an unfortunate odour. Even my plastic in-the-sink stands for trays have developed the same odour, because they have small places that trap water. So the whole shebang has been mustard gassed. A merciless application from low altitude. The wood seems to have been invaded rather deeply by insurgents, but the plastic now smells neutral. I think some undesirable fungus lives in my new neighbourhood. The little bugs are croaking like strangled dogs, so I'm going to visit a buddy and drink beer. When I leave, the wood duckboard is going to accompany me to its new home, between the sidewalk and the road. After I remove the stainless steel screws from its carcase, that is... regards, --le ________________________________ Lloyd Erlick Portraits, Toronto. website: www.heylloyd.com telephone: 416-686-0326 email: portrait@heylloyd.com ________________________________ -- > "Nicholas O. Lindan" <see@sig.com> wrote: > > > Of course when spilled KRST dries it leaves > > behind selenium powder. Best not to think on these things too much. > Nothing spilled gets to dry ... > ... my newly made, number two pine > duckboard has developed an unfortunate odour ... > I think some undesirable fungus lives in my > new neighbourhood. Ah, if you had let the spilled KRST dry on the wood then the fungus wouldn't have stood a chance. SignatureNicholas O. Lindan, Cleveland, Ohio Darkroom Automation http://www.nolindan.com/da/index.htm n o lindan at ix dot netcom dot com > > The Australian MSDS documents tend to have more detail. > > Is there one for hydrogen hydroxide? An example is that US MSDSs sometimes do not include phenidone because it's present in small quantities. The Aust MSDS from the same manufacturer will include it. The British equivalent of the MSDS usually contains less than any other I've seen. Lloyd, the most common do-it yourself selenium toner is the T-55, a direct toner. You will find it on the web easily. > Inhaling the powdered selenium/selenium salt is to be avoided. A bit > like Pyro in that way. Of course when spilled KRST dries it leaves > behind selenium powder. Best not to think of these things too much. Not really. I imagine it the white stuff is mostly sodium sulphite. The selenium ions in solution no doubt combine with some other ions. They would not decompose into selenium powder. Signature.~. Jean-David Beyer Registered Linux User 85642. /V\ PGP-Key: 9A2FC99A Registered Machine 241939. /( )\ Shrewsbury, New Jersey http://counter.li.org ^^-^^ 11:30:01 up 20 days, 14:20, 3 users, load average: 4.13, 4.08, 4.08 > Nicholas O. Lindan wrote: > > ...when spilled KRST dries it leaves > > behind selenium powder. > Not really. I imagine it the white stuff is > mostly sodium sulphite. Mine dries to a reddish brown. Whatever is left behind has to contain selenium along with whatever else there is in KRST. I doubt it is much of a hazard, but I think that about most things that send other [usually younger] folks into hysterics. SignatureNicholas O. Lindan, Cleveland, Ohio Darkroom Automation http://www.nolindan.com/da/index.htm n o lindan at ix dot netcom dot com > There are several do it yourself selenium toner formulas. I will dig > some up. One sort involves dissolving selenium powder (selenium is an [quoted text clipped - 5 lines] > Both involve boiling the solution for some time to facilitate > dissolution. Definitely something to do outdoors or in a fume cupboard. Many years ago I purchased a selenium toner kit from Photographer's Formulary. I came with a small plastic pouch containing metallic selenium powder. The instructions were to combine that with other components and water, and then boil for an extended period (several days?) until some or all of the selenium powder had been disolved in the liquid. There were some precautionary notes in the instructions that caused be to be hesitant - things like making sure that the boiling took place outdoors, how to dispose of the selenium powder that didn't go into solution, using only a pyrex glass containter for making the toner, and then not using that container for any other purpose. In the end, I decided that it would be worth the additional cost to let Kodak mix the stuff for me. |
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