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Topic: How to stabilize polysulfide in weak alkaline solution?  (Read 3790 times)

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Offline cdmaverick

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How to stabilize polysulfide in weak alkaline solution?
« on: July 16, 2011, 09:08:26 AM »
When adding the sodium polysulfide into weak alkaline solution containing bicarbonate,the solution seems to be out of sulphur.How could this happen and how to solve this situation?
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Offline Mitch

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Re: How to stabilize polysulfide in weak alkaline solution?
« Reply #1 on: July 17, 2011, 02:58:05 PM »
You mean yellow sulfur is crasing out?
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Offline Hunter2

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Re: How to stabilize polysulfide in weak alkaline solution?
« Reply #2 on: July 19, 2011, 11:24:39 AM »
Quote from: cdmaverick on July 16, 2011, 09:08:26 AM
When adding the sodium polysulfide into weak alkaline solution containing bicarbonate,the solution seems to be out of sulphur.How could this happen and how to solve this situation?

Probably its not possible, because bicacorbonate HCO3- is acidic enough to release the Sx2- Anion. I think you have to increase pH with NaOH or something.
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