Standard

NEN-ISO 15064:2004 en

Plastics - Aromatic isocyanates for use in the production of polyurethanes - Determination of the isomer ratio in toluenediisocyanate

  • This norm is withdrawn since 27-12-2010

48,19

About norm

Status Withdrawn
Number of pages 10
Committee Kunststoffen
Published on 01-08-2004
Language English
This International Standard specifies methods for the measurement of toluene-2,6-diisocyanate in mixtures of the 2,4- and 2,6-isomers. Two methods based on infrared spectroscopy are required to give accurate results over a broad range of isomer concentrations. Method A is applicable to TDI samples containing 5 % to 95 % of the 2,6-isomer. Method B is applicable to TDI samples containing 0 % to 5 % of the 2,6-isomer. Both methods are based on the quantitative measurement of absorption bands arising from out-of-plane C H deformation vibrations of the aromatic ring at 810 cm-1 and 782 cm-1 (12,3 µm and 13,8 µm).

Details

ICS-code 83.080.10
Dutch title Kunststoffen - Aromatische isocyanaten voor gebruik in de productie van polyurethanen - Bepaling van het isomeergehalte in toluene diisocyanate
English title Plastics - Aromatic isocyanates for use in the production of polyurethanes - Determination of the isomer ratio in toluenediisocyanate
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