Storing Ammonium Thiosulfate

[athbr]

Might have found a source for Ammonium Thiosulfate.

I hear it doesn't store super well in solid form. I'm worried because I won't have any immediate use for it.

Should I dissolve it all into a 60% Solution? Could I store it in glycol?

I want it to last as long as possible. What kind of shelf life can I expect from this stuff?

 

[Photo Engineer]

It keeps very poorly as a solid. As a 60% solution it can keep for several years in a sealed full bottle. Do not store it in glycol. Use only DW to dissolve it.

PE

 

[pentaxuser]

It keeps very poorly as a solid. As a 60% solution it can keep for several years in a sealed full bottle. Do not store it in glycol. Use only DW to dissolve it.

PE

What is DW? Thanks

pentaxuser

 

[Steve Goldstein]

Distilled water, most likely.

 

[Photo Engineer]

I thought DW was used so often here, I just used it automatically. Sorry.

PE

 

[jim appleyard]

Might have found a source for Ammonium Thiosulfate.

Can you tell us where? I've been buying from Artcraft, but his source is questionable these days.

 

[Photo Engineer]

The Formulary sells photo grade Ammonium Hypo as a 60% solution.

I used it to formulate (pun) TF5.

PE

 

[athbr]

Suvatlar has some too.

 

[Rudeofus]

Check for shipping costs, typically we are charged through nose and ear to ship liquids across countries. If you have a local source of Ammonium Thiosulfate, then most likely that's the cheapest option.

BTW many sources which offer "Ammonium Thiosulfate" will ship 60% aqueous solution, this appears to be the most commonly available form of Ammonium Thiosulfate. I had to jump through hoops and paid dearly to get the powder once.

 

[Anon Ymous]

You may find ammonium thiosulfate as a fertiliser and it will be the cheapest source. It will come as a 58-60% aqueous solution. I have some I bought a couple of years ago and it's still just fine.

 

[Peter Schrager]

Can you tell us where? I've been buying from Artcraft, but his source is questionable these days.

I just bought some from him and it is just fine

 

[jim appleyard]

I just bought some from him and it is just fine

The liquid, 60% stuff? I checked with Mike about 2 weeks ago and he could get it, but it was the yellow fertilizer stuff and he was waiting for it to stop raining so farmers could use the stuff and then he could get the clear variety.

 

[Peter Schrager]

The liquid, 60% stuff? I checked with Mike about 2 weeks ago and he could get it, but it was the yellow fertilizer stuff and he was waiting for it to stop raining so farmers could use the stuff and then he could get the clear variety.

Not... powder crystals I made my own 2% solution for gold toning

 

[Peter Schrager]

Oops sorry about my posts..I bought ammonium rhiocyanate!! Brain fart

 

[Photo Engineer]

Rhiocyanate Peter????

PE

 

[Rudeofus]

Peret ptobably meanr Rhiocyanare!

 

[Richard Searle]

Check for shipping costs, typically we are charged through nose and ear to ship liquids across countries. If you have a local source of Ammonium Thiosulfate, then most likely that's the cheapest option.

BTW many sources which offer "Ammonium Thiosulfate" will ship 60% aqueous solution, this appears to be the most commonly available form of Ammonium Thiosulfate. I had to jump through hoops and paid dearly to get the powder once.

Process Supplies in the UK sells it in powder form.
https://www.processuk.net/Ammonium_Thiosulphate__500-grms/p740597_3427198.aspx

 

[Stats]

Along a similar line, I have some TF4 in unopened gallon containers which appear to have gone bad. What would be a proper way to discard it? Anon Ymous stated that it can be used as fertilizer, so I wonder if i could use it in my garden. Since I have a septic system, I don't want to discard the concentrate into it.

 

[Rudeofus]

TF-4 is quite alkaline, therefore I would not dump it in my garden. Can you explain how your batch of TF-4 went bad? Did it sulfur out, or did you just detect some white crystals floating in it?

 

[Photo Engineer]

TF4 has Borate in it. This is not good for some plants. I would not use it due to that and the potential pH problem.

TF5 has no Borates.

PE

 

[Stats]

My TF4 has developed a dark brown discoloration and the solids won't go into suspension. At this point I am just looking for a way to dispose of it safely without jeopardizing my septic system.

 

[jim appleyard]

Along a similar line, I have some TF4 in unopened gallon containers which appear to have gone bad. What would be a proper way to discard it? Anon Ymous stated that it can be used as fertilizer, so I wonder if i could use it in my garden. Since I have a septic system, I don't want to discard the concentrate into it.

Does your local town/county have a toxic waste site where you can dump it? Many areas have such a thing with their recycling program. Some places only do it once/twice a year, but if this stuff is that old, what's waiting a few months?

 

[thefizz]

So how long should Ammonium Thiosulfate last in solid form and what signs should one look out for to know it has gone off?

 

[Photo Engineer]

The solid begins to look like slush. It takes on a yellow color sometimes and has a rotten egg odor. This describes three possible "stages" of going bad.

That is why it is usually sold as a solution.

PE