Silver thiosulphate
- Thread starter mosfetta
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In what form is the Silver?
And why do you want to use ThioSulfate?
Are you stripping plated silver, or possibly film, with a sodium thiosulfate wash?
How are you generating the silver sulphate?
Are you using fine steel wool?
How are you generating the silver sulphate?
Are you using fine steel wool?
the silver comes from leaching and traning of PCB, therefore a mush that I try to perfect.
2) I use thiosulfate because it seems more suitable and faster for this situation.
Thanks for the reply
What does training of PCB mean?
Edited in note.
I assume training was a typo meaning draining.
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I put the PCBs in diluted nitric acid, a solution of silver nitrate and an undefined background slurry will form, I divide the two things to treat them better with thiosulphate. it will generate sulphate and sulphide with steel wool, I want to melt it with some iron and sodium carbate, do I wash with something or base like this??
pcb that I clean from iron or other unwanted metal
There is little Silver if at all in PCB, but plenty Tin which do not play well with Nitric.
What does 'fine' steel wool mean?
Fine means thin fabric. Steel wool comes from very coarse to very fine grades. The fine grade dissolves easier and cements out the silver.
obviously I know what fine means, I wanted to understand the functionality between fine and coarse and if there are other specifications.
Thank you
It's all about the surface area, if you were to measure the surface area of a kilogram of coarse steel wool and the surface area of fine steel wool the difference is large. More surface gives more area for the chemistry of cementation to work. Remember physical contact of the metals is necessary for the reaction to occur so more area equals more places for these reactions to take place within the same mass of wool.
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Well thanks
