ISO 6923:2023 色漆和清漆 用带紫外检测的高性能液相色谱法（HPLC-UV）测定涂层材料和类似产品中的单体二异氰酸酯含量

标准编号：ISO 6923:2023

中文名称：色漆和清漆 用带紫外检测的高性能液相色谱法（HPLC-UV）测定涂层材料和类似产品中的单体二异氰酸酯含量

英文名称：Paints and varnishes — Determination of monomeric diisocyanate content in coating materials and similar products using high performance liquid chromatography with ultraviolet detection (HPLC-UV)

发布日期：2023-09

标准范围

本文件规定了定量测定涂料、粘合剂和其他液体或糊状材料中单体二异氰酸酯含量的方法。该方法适用于定量以下单体二异氰酸酯:亚甲基二苯基二异氰酸酯（MDI，2,4’-MDI和4,4’-MDI）、甲苯二异氰酸酯（TDI，2,6-TDI，2,4-TDI）、（顺/反）异佛尔酮二异氰酸酯（IPDI）和六亚甲基二异氰酸酯（HDI，1,6-HDI），浓度范围为0.01？%至2.0？%质量分数。对于较高浓度，在用对硝基苄基-N-丙胺(PNBPA)衍生之前进行合适的稀释。使用具有多波长检测器的超高效液相色谱(UHPLC)进行测量。

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.

标准预览图