Analysis of organic isocyanates using capillary supercritical-fluid chromatography

Capillary supercritical-fluid chromatography (CSFC) is shown to provide high-resolution separations of a wide variety of di-, tri- and polyisocyanates, including derived products such as dimer, trimer, urea, biuret, carbodiimide, phenol-blocked, thiophosphoric, carbamate and thiocarbamate isocyanate...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Chromatography A 1989, Vol.472 (1), p.175-195
Main Authors: Fields, Steven M., Grether, Hans-Joerg, Grolimund, Karl
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Other chromatographic methods
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Capillary supercritical-fluid chromatography (CSFC) is shown to provide high-resolution separations of a wide variety of di-, tri- and polyisocyanates, including derived products such as dimer, trimer, urea, biuret, carbodiimide, phenol-blocked, thiophosphoric, carbamate and thiocarbamate isocyanates. CSFC is superior to any other available separation technique for many isocyanates. Derivatization is not necessary with a carbon dioxide mobile phase. Significant changes in selectivity of diisocyanate separations were effected by variations in temperature and use of methyl, biphenyl and octyl methylpolysiloxane stationary phases. Operating temperatures of up to 100°C could be used. With neat carbon dioxide as the mobile phase, the applicable mass range had an upper limit of 500–2000 g mol −1, depending on sample structure and composition.
ISSN:0021-9673
DOI:10.1016/S0021-9673(00)94105-0