Reference number
ISO 6923:2023
International Standard
ISO 6923:2023
Paints and varnishes — Determination of monomeric diisocyanate content in coating materials and similar products using high performance liquid chromatography with ultraviolet detection (HPLC-UV)
Edition 1
2023-09
Preview
ISO 6923:2023
82471
No disponible en español
Publicado (Edición 1, 2023)

ISO 6923:2023

ISO 6923:2023
82471
Idioma
Formato
CHF 63
Convertir Franco suizo (CHF) a tu moneda

Resumen

This document specifies a method for the quantitative determination of monomeric diisocyanate content in coating materials, adhesives and other liquid or pasty materials.

This method is suitable for the quantification of the following monomeric diisocyanates: methylene diphenyl diisocyanate (MDI, 2,4’-MDI and 4,4’-MDI), toluene diisocyanate (TDI, 2,6-TDI, 2,4-TDI), (cis/trans) isophorone diisocyanate (IPDI) and hexamethylene diisocyanate (HDI,1,6-HDI) in various matrices for concentrations ranging from 0,01 % to 2,0 % mass fraction. For higher concentrations, a suitable dilution before the derivatization with p-nitrobenzyl-N-propylamine (PNBPA) is performed. The measurements are carried out using ultra high performance liquid chromatography (UHPLC) with a multiple wavelength detector.

Informaciones generales

  •  : Publicado
     : 2023-09
    : Norma Internacional publicada [60.60]
  •  : 1
     : 10
  • ISO/TC 35/SC 16
    87.040 
  • RSS actualizaciones

¿Tiene alguna duda?

Consulte nuestras Ayuda y asistencia