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Author: Subject: Reduction of Arsenic Trioxide with Lithium
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[*] posted on 25-8-2011 at 09:57


Thanks MrHomeScientist, I've given up on it
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[*] posted on 25-8-2011 at 20:03


Good chance you had lead arsenate. I bought some decades ago when it was still a common pesticide, and it was coloured pink and is practically insoluble.
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[*] posted on 25-8-2011 at 20:09


any way of separating the 2 SAFELY?



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[*] posted on 26-8-2011 at 06:40


What does your use of the term "safely" mean? You're dealing with fairly toxic materials, safety depends on what precautions you take.

I used the stuff to make elemental As by mixing with powered wood charcoal, and heating in a retort make from steel pipe with the traditional condenser for As - a long tube formed of rolled up iron sheet. The Pb remained behind as the metal, while the Na ended up as carbonate.

A safer means might be to heat with aqueous Na2CO3, forming sodium arsenite solution and leaving the Pd as basic carbonates which can be filtered out (real filter paper, not coffee filters or paper towels. After that pick one of the aqueous based reductions, adding concentrated HCl and then SnCl2 would seem to be easy. But do some research on your own, download some o the older free chemistry books to be found as they often have preparative methods.
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[*] posted on 26-8-2011 at 09:50


safety as in the safest way with out killing anyone



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[*] posted on 26-8-2011 at 10:05


There is a whole spectrum of stuff that can happen between "nothing" and "killing someone". It involves chemical damage to the body. ;)



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