Premium
Proton NMR determination of the 2,4–/2,6–isomer ratio in commercial toluene di‐isocyanates
Author(s) -
Platten M. R.
Publication year - 1975
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270070611
Subject(s) - toluene , isocyanate , hexafluorobenzene , proton , chemistry , solvent , proton nmr , analytical chemistry (journal) , benzene , organic chemistry , nuclear physics , physics , polyurethane
The CH 3 ‐proton resonances for the 2,4‐ and 2,6‐isomers of toluene di‐isocyanate separate when hexafluorobenzene is used as a solvent. Integration of these absorptions over an expanded sweep scale gives the isomer ratio with an accuracy of ±0.5% over the range normally encountered with commercial samples.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom