Non-Chemical What to use to remove tin from foils?

[Geo]

Hydrated tin oxide (metastannic acid) can be removed completely in a short period of time.
First, add hydroxide to convert the tin hydrate to tin oxide. Very important, rinse well and dry the mass. Do not over heat or burn the salt. Dry on low heat. Once the salt is dry, add it to a beaker and add acetic acid. The tin oxide will dissolve instantly creating tin acetate. Any foils or solids should be rinsed well before processing further. The process only works if the salt is dry. It will not work on wet material.
I have used ammonia after drying the salts and it dissolves the salt but then you have to neutralize the solution.

 

[Jado]

AGold,

The section in Hokes book is pages 69-73.

I wouldn’t advise tasting the washings though.

Definitely need Jedi input after that.

Sulphuric acid is recommended after recovery. I use AP for recovery due to silly U.K. restrictions.

Can anyone suggest an alternative to Sulphuric? Caustic will remove lead nitrates but I don’t think the tin paste.

Can someone help!?

Thanks all.

Is the restriction regarding possession or just sales? Magnesium Sulphate should be accessible if possession isn’t the issue.