From: mailbox (mailbox$##$invalid)
Date: Tue Mar 29 2005 - 00:25:20 EST
Hello Friends !
I had got good advices from some friends thro' this site regarding to my =
reaction of producing Isocyanate from an Amine HCl. But I'm finally =
getting difficulties in purifying this Isocyanate. As per the final GC, =
Isocyanate comes as 94-95% maximum alongwith 4-5% peak of some impurity =
before the main peak (comes as lower boiler). This impurity comes as =
cloudy solid & extends more slowly making the isocyanate more & more =
turbid on standing.
Can anyone pls suggest me how I can remove this impurity & purify my =
isocyanate ?? However, I had got one reference according to which, "Do =
the distillation with column (fractional) distillation with shorter =
time". (Actually, how it can be performed practically ? Because if the =
column is there, then travelling time for vapor would be obviously =
longer !! )
By the way, I had performed this reaction in MDC & aq. bicarbonate media =
in biphasic mode with triphosgene.
I will be anxiously awaiting your kind advices.
Pls help me.
Thanking you in advance,
ORGLIST - Organic Chemistry Mailing List
Website / Archive / FAQ: http://www.orglist.net
To post a message (TO EVERYBODY) send to everybody$##$orglist.net
To unsubscribe, send to everybody-request$##$orglist.net the message: unsubscribe your_orglist_password your_address
List coordinator: Joao Aires de Sousa (coordinator$##$orglist.net)
This archive was generated by hypermail 2.1.4 : Thu Feb 18 2010 - 16:58:09 EST