guy
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Tin solder
I tried to dissolve some lead-tin solder in a combination of H2O2-acetic acid. There was white stuff coming of it and settle as a precipitate (tin
oxide?). Anyways, I dont beleive any lead was dissolved because when I added NaCl no ppt formed. So I added the rest of the solution to NaOH. It
turned red and later turned to a light orange peach color. What is it? Is it a tin hydroxide, if so is it Sn(OH)4 of Sn(OH)2? I have searched on
google but did find out the color of tin hydroxides. I just want to be sure.
thanx.
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The_Davster
A pnictogen
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Coincidently, I am currently dissolving some lead in acetic acid/H2O2. However when I add NaCl I do get a flaky white ppt. I also have a white
insoluble solid at the bottom of the beaker but I think that it is lead oxide. It does not seem to react with more acetic acid to give lead acetate.
I have worked with Sn/Pb solder before. Here is a thread in which some experiments with solder were documented.
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guy
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Also something wierd happened.
>When adding NaOH to the solution, it turned red for a second and instantly turned white.
>When adding the solution to NaOH it remained red-orange
The ppt couldn't be Pb hydroxide right? I read that a normal hydroxide does not exist.
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Antman 762
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is it flux free, if it has flux what your probally seeing is zinc chloride.
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