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CEN

EN ISO 6923:2024

(Main)

Paints and varnishes - Determination of monomeric diisocyanate content in coating materials and similar products using high performance liquid chromatography with ultraviolet detection (HPLC-UV) (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) (ISO 6923:2023)

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.

Beschichtungsstoffe - Bestimmung des Gehaltes an monomeren Diisocyanaten in Beschichtungsstoffen und ähnlichen Produkten mittels Hochleistungsflüssigkeitschromatographie mit Ultraviolettdetektion (HPLC-UV) (ISO 6923:2023)

Peintures et vernis - Dosage des diisocyanates monomères dans les produits de peinture et produits similaires par chromatographie en phase liquide haute performance couplée à un détecteur ultraviolet (HPLC-UV) (ISO 6923:2023)

Barve in laki - Določanje monomernega diizocianata v premazih in podobnih izdelkih s tekočinsko kromatografijo visoke ločljivosti z ultravijolično detekcijo (HPLC-UV) (ISO 6923:2023)

General Information

Status
Published
Publication Date
11-Jun-2024
ICS
87.040 - Paints and varnishes
Technical Committee
CEN/TC 139 - Paints and varnishes
Drafting Committee
CEN/TC 139 - Paints and varnishes
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
12-Jun-2024
Due Date
02-Feb-2026
Completion Date
12-Jun-2024
Ref Project
oSIST prEN ISO 6923:2024 - Paints and varnishes - Determination of monomeric diisocyanate content in coating materials and similar products using high performance liquid chromatography with ultraviolet detection (HPLC-UV) (ISO 6923:2023)

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Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 6923:2024
01-marec-2024
Barve in laki - Določanje monomernega diizocianata v premazih in podobnih
izdelkih s tekočinsko kromatografijo visoke ločljivosti z ultravijolično detekcijo
(HPLC-UV) (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) (ISO 6923:2023)
Beschichtungsstoffe - Bestimmung des Gehaltes an monomeren Diisocyanaten in
Beschichtungsstoffen und ähnlichen Produkten mittels
Hochleistungsflüssigkeitschromatographie mit Ultraviolettdetektion (HPLC-UV) (ISO
6923:2023)
Ta slovenski standard je istoveten z: prEN ISO 6923
ICS:
87.040 Barve in laki Paints and varnishes
oSIST prEN ISO 6923:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 6923:2024

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oSIST prEN ISO 6923:2024
INTERNATIONAL ISO
STANDARD 6923
First edition
2023-09
Paints and varnishes — Determination
of monomeric diisocyanate content in
coating materials and similar products
using high performance liquid
chromatography with ultraviolet
detection (HPLC-UV)
Reference number
ISO 6923:2023(E)
© ISO 2023

---------------------- Page: 3 ----------------------
oSIST prEN ISO 6923:2024
ISO 6923:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2023 – All rights reserved

---------------------- Page: 4 ----------------------
oSIST prEN ISO 6923:2024
ISO 6923:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Reagents . 3
7 Reference standards . 4
8 Sampling . 4
9 Procedure .4
9.1 Sample preparation . 4
9.2 Calibration
...

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