- Removing excess triphosgene

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morend

September 14th, 2005 09:34

Removing excess triphosgene

how to remove excess triphosgene from the reaction media?

aurochem

October 20th, 2005 00:26

Dear Mr. Kamal

Nice to see your point about TP handling.
The excess can be removed by nitrogen flushing v easily.

Thanks.

Sudhir Kumar

[email protected]

Knowitall

November 25th, 2005 13:23

Flushing with N2 takes too long. Depending on scale, you may want to quench with methanol (this makes dimethyl carbonate) which can be removed when you evaporate your solvent. Of course, methanol may react with your isocyantate too....

January 17th, 2006 20:35

agree with aurochem strongly. :D

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