ISO/TR 9372:1993

Plastics — Basic materials for polyurethanes — Determination of the amounts of 2,4- and 2,6-isomers in toluenediisocyanate by infrared spectroscopy ISO/TR 9372:1993

Publication date:   Mar 25, 1993

95.99 Withdrawal of Standard   Sep 30, 2011

General information

95.99 Withdrawal of Standard   Sep 30, 2011

ISO

ISO/TC 61/SC 12 Thermosetting materials

Technical Report

83.080.10   Thermosetting materials

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Scope

The principle of the method is preparing a cyclohexane solution of the sample to be analyzed, measuring the absorbance for the 810 cm^-1 and 782 cm^-1 bands which are characteristic of the 1,2,4- and 1,2,6-positions on the aromatic ring, and calculating the absorbance ratio. Applies to mixtures containing 5 % to 95 % of the 2,4-isomer.

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WITHDRAWN
ISO/TR 9372:1993
95.99 Withdrawal of Standard
Sep 30, 2011