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Loptr
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You might want to check this out in regards to the methylenation.
Attachment: ja00444a030.pdf (210kB)
This file has been downloaded 756 times
[Edited on 13-5-2015 by Loptr]
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drenchedingold
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Sorry brother couldn't open it. I'll try downloading a new pdf
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Loptr
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The point of the paper was that the time requirement is lowered and yield is drastically increased with the usage of DMF with potassium fluoride, or
even better, cesium fluoride.
I also seem to recall reading an inert atmosphere isn't required for this particular procedure, but you want to ensure everything is very dry.
[Edited on 14-5-2015 by Loptr]
[Edited on 14-5-2015 by Loptr]
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skip
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how is done ?
Quote: Originally posted by Boffis  | | I have used propane as an oxygen shield when preparing sodium cyanide from anhydrous sodium ferrocyanide and metallic sodium. The small amounts of
impurities in commercial propane fuel are not a problem. You just have to remember its not so inert in contact with air but if you are flushing a
reaction vessel you can always run the exhaust gas through a bunsen burner to burn it off. |
like to know more about using sodium ferrocyanide and metallic sodium to produce NaCN. thanks
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Loptr
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If you really have to ask, the HCN vapor will likely kill you.
Not something to take lightly.
We had a member die a while back due to similar preparations.
The NaCN preparation on YT is actually of the member that died.
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skip
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Ive already done it lots of times on a molar scale .I was wanting to know how elemental sodium is used in the process. I always used sodium hydroxide
. Have distilled hydrocyanic lots of times and never had a problem. Why does alot of people here always assume some one with a couple posts is dumb
as dirt.
[Edited on 22-5-2015 by skip]
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Crowfjord
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The method of reducing ferrocyanide with sodium is posted on this forum. I think it is at or toward the end of the "Preparation of cyanides" thread,
under Chemistry in General. Search and you will find.
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skip
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Sorry to hijack the thread. Thanks crowford I see now, I will stick to my way. Thanks again. Kind regards.
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