# Tin (Sn) Metal

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If any of you have any ideas about extracting or obtaining Tin metal heres the place to discuss it.

I have one, it involves using 60/40 Tin/Lead solder, melt it untill all the solder flux has burned off, then dissolve it in acid, from there simple displacement should provide the Tin, or at least thats the plan.

on the electromotive series, does anyone know which comes 1st Tin or Lead in reactivity?

or can improve upon my method at all?

I only need half a gram or so, so the whole thing can be done in a test tube quite easily and no fancy equipment is needed.

Ideas Welcome

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2sec, I'm sure if you use nitric acid then you can use electrolysis to get it.

I think!!!!

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actualy, I AM using Nitric acid

and its bubbling away nicely at the moment, I was thinking of adding excess solder as Im fairly sure that tin is more reactive than the lead, so I should end up with fairly pure soln of Tin Nitrate, I was considering using Magnessium to displace the tin after.

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mmm I think I'm thinking about tin(II) chloride.

But I'm sure you can get the lead out using this method.

My chem skills are poor,

http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA1/R1MAIN/CD1R1630.HTM

But then how to turn the tin back.

Fun fun

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well with the excess solder, the only thing left as a soid should be unreacted solder and lead, the soln should be tin nitrate, Ill pour that off, and then add Mg ribbon, that should then react forming magnessium nitrate soln and tin metal, then Ill just pour of the soln and wash my tin metal.

an interesting observation about this solder in Nitrac acid, is that there is No formation of Nitrogen Dioxide gas??? and the bubbles are Hydrogen.

btw, this is the site that got me excited about obtaining Tin metal: http://www.scitoys.com/scitoys/scitoys/thermo/liquid_metal/liquid_metal.html

I really want some of that stuff

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lol. I know the metal with out even looking at the link, (I've been on that site lots).

I may try this one day (when I get some nitric acid).

Keep us informed,

If you had some Tin oxide (from making solar panels) add some carbon etc.

Shame I've got none, lol.

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PS where did you get your indium from?

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Have you looked for pieces at a local hobby shop? Some arts and crafts and hobby supply shops in the US sell small sheets of tin. I realize that you are in the UK, but I will bet that you can find some there.

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Hmmm... I cant explain this, its stopped reacting now, because the "liquid"s turned into a thick Gel like mess?

the sort you get with Hydroxides, but how can that happen when its made with Nitric acid?

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Has it got warm?

I think you have to keep it cool.

PS I think you will have some ammonium nitrate in there as well.

PPS give this a read.

http://encarta.msn.com/encyclopedia_761563439/Tin.html

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yeah, it gets really hot during the reaction, then it changed from clear liquid to white cloudy and gell like, now after shaking it to get the reaction moving again, its a dark grey Gell, with black bits in it

Grrrr....

oh yeah,Lance sent me the indium by post, we did a swap for some Gold Chloride.

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Both indium and tin can be obtained easily from http://www.emovendo.net. Not particlularly cheap, but very very pure samples can be obtained from them. I have tin at 99.99% purity and indium at 99.99% purity. They also have gallium, but international shipping of gallium may be a problem, as it eats away aluminium and is wetting very much. A good source of gallium also is eBay.

Personally, I think it is best to buy some tin from such a company. Given the price of very pure tin I would not even think of messing with solder and removing the very toxic lead salts in this process. This company also sells 1 lb amounts of tin, albeit at somewhat lower purity, but also at a much lower price.

TIN Metal Element 1lb Shot 99.96% $16.99 TIN Metal Element 30 grams 99.99%$5.99

INDIUM Metal Element Teardrops 10 grams 99.999% $19.99 INDIUM Metal Element Teardrops 25 grams 99.99%$28.99

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the stuff I have is 60/40 Tin Lead respectively.

yeah, I think Ill invest in one or 2 of these items, I could do with a re-stock anyway as its coming into autumn again, and I like to get "fresher" products in yearly anyway.

as for the gel Hydrochloric acid might well work, only Im out of that too and Nitric now and Mg ribbon almost.

at least I know one way NOT to do it, besides, its pointless having all these elements and chems if youre not going to use and enjoy them anyway, so alls not lost

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If you ever decide that you need to separate tin and lead, you might look at some kind of electrolytic method with a precise voltage control and tin chloride for the electrolyte. There is more to it than that, but that might some time be worth doing and enjoyable.

I never had a chance to weigh in, but I am completely against the lead-free circuit board movement. Lead-free for water pipes I am all for, but until the time that we have lead-free alloys that are at least as sturdy as the original solder, we should use the old stuff. That's another issue, I suppose.

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Note that PbCl2 is only slightly soluble.

Best,

Borek

--

pH calculation

concentration conversion

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The lead will plate out first if you try electrolysis. It would probably be easier to precipitate it with HCl than to try and determine when it is all out of the solution.

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well thus far Ive managed to electrolise 2 rod ingots of solder in a weak (5%) Hcl Soln, at the Anode was a mixture of dark grey and sometimes white "powder" that seem to fall off the ingot at intervals along with the "Fizzing", I ran this at 2.5 volts with a 5 amp potential, I found that any higher voltage and Ide get gas at the cathode as well (and the psu would heat up). At the Cathode there was a build up of grey spongey metal with really Odd looking clear Needle like crystals forming too???

I had the same crystals form when I left a peice of solder in a test tube of HCl over night too, their shape is definately monoclinic but at a really sharp angle, finding the tip is extremely difficult also as theyre so fine. Ive no idea what they are yet, but to form in such a weak soln, I cant imagine their solubility being very high, so its possibly the lead chloride?

I did this until the Anode had completely "dissolved" then left the 2 products in the soln over night and then filtered out the particulate matter.

also as luck would have it, I found a rather large chunk of Mg Metal, so Ill not have to worry about using the last inch of my Mg Ribbon

I`ll post the results, Good or Bad when I get some...

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How come alu wont work?

:/

NM, alu oxide layer, duh!!

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