[Microbiology] tetrathionate synthesis
(by txl8326 from louisiana.edu)
Wed Dec 5 15:19:44 EST 2007
I am trying to synthesize the potassium tetrathionate according to the
recipie in P.A. Trudinger, 1961. Thiosulfate Oxidation and Cytochromes in
Thiobacillus X. 2. Thiosulfate oxidizing enzyme. Biochem. J. 78, 680.
The recipie says literally:
50 g of sodium thiosulfate (Na2S2O3,5H2O) was dissolved in 100ml of water
and oxidized to completion with iodine. An excess of potassium acetate was
added and K2S4O6 precipitated by the addition of 4 volumes of absolute
ethanol. The material was rtecrustalized from 0.5N HCl.
When I tried to do that, I could not oxidize the thiosulfate solution. First
of all, the iodine we have is not readily soluble in water. Could you please
help with the reagent names and preparation?
I also appreciate if anyone will send me a different recipie for the
tetrathionate synthesis with explanations.
Thanks a lot
Tanya (txl8326 from louisiana.edu).
Department of Biology
University of Louisiana at Lafayette
Phone (Office): 482-5056
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