Proton NMR determination of the 2,4-/2,6-isomer ratio in commercial toluene di-isocyanates
| ISSN: |
0030-4921
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| Keywords: |
Chemistry ; Analytical Chemistry and Spectroscopy
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| Source: |
Wiley InterScience Backfile Collection 1832-2000
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| Topics: |
Chemistry and Pharmacology
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| Notes: |
The CH3-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.
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| Additional Material: |
1 Ill.
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| Type of Medium: |
Electronic Resource
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| URL: |