SIST 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)
Dieses Dokument legt ein Verfahren zur quantitativen Bestimmung des Gehaltes an monomeren Diisocyanaten in Beschichtungsstoffen, Klebstoffen und sonstigen flüssigen oder pastenförmigen Stoffen fest.
Dieses Verfahren eignet sich zur Quantifizierung der folgenden monomeren Diisocyanate: Methylendiphenyl Diisocyanat (MDI, 2,4’ MDI und 4,4’ MDI), Toluoldiisocyanat (TDI, 2,6 TDI, 2,4 TDI), Isophorondiisocyanat (IPDI) (cis/trans) und Hexamethylendiisocyanat (HDI,1,6 HDI) in unterschiedlichen Matrices für Konzentrationen zwischen 0,01 % und 2,0 % (Massenanteil). Bei höheren Konzentrationen wird vor der Derivatisierung eine geeignete Verdünnung mit P Nitrobenzyl N Propylamin (PNBPA) vorgenommen. Die Messungen werden mittels Ultra Hochleistungsflüssigkeitschromatographie mit einem Detektor für mehrere Wellenlängen durchgeführt.
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)
Le présent document spécifie une méthode de dosage quantitatif des diisocyanates monomères dans les produits de peinture, les adhésifs et autres matériaux liquides ou pâteux.
La présente méthode est applicable à la quantification des diisocyanates monomères suivants: le diisocyanate de diphénylméthylène (MDI, 2,4’-MDI et 4,4’-MDI), le diisocyanate de toluène (TDI, 2,6-TDI, 2,4-TDI), le diisocyanate d’isophorone (IPDI) (cis/trans) et le diisocyanate d’hexaméthylène (HDI, 1,6-HDI) présents dans différentes matrices à des concentrations comprises entre 0,01 % et 2,0 % en fraction massique. Pour les concentrations plus élevées, une dilution appropriée précède la dérivatisation à la p-nitrobenzyle-N-propylamine (PNBPA). Les mesurages sont réalisés par chromatographie en phase liquide ultra-haute performance (UHPLC) avec un détecteur à longueurs d’ondes multiples.
Barve in laki - Določanje monomernega diizocianata v premazih in podobnih izdelkih s tekočinsko kromatografijo visoke ločljivosti z ultravijolično detekcijo (HPLC-UV) (ISO 6923:2023)
Ta dokument določa metodo za kvantitativno določanje monomernega diizocianata v premazih, lepilih in drugih tekočih materialih oziroma materialih v obliki paste.
Ta metoda je primerna za kvantifikacijo naslednjih monomernih diizocianatov: metilen difenil diizocianata (MDI, 2,4’-MDI in 4,4’-MDI), toluen diizocianata (TDI, 2,6-TDI, 2,4-TDI), (cis/trans) izoforon diizocianata (IPDI) in heksametilen diizocianata (HDI,1,6-HDI) v različnih matricah za koncentracije od 0,01 % do 2,0 % masnega deleža. Pri višjih koncentracijah se izvede ustrezno redčenje pred derivatizacijo s p-nitrobenzil-N-propilaminom (PNBPA). Meritve se izvajajo s tekočinsko kromatografijo ultra visoke ločljivosti (UHPLC) z detektorjem z nastavljivo valovno dolžino.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-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)
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)
Ta slovenski standard je istoveten z: EN ISO 6923:2024
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 6923
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2024
EUROPÄISCHE NORM
ICS 87.040
English Version
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)
Peintures et vernis - Dosage des diisocyanates Beschichtungsstoffe - Bestimmung des Gehaltes an
monomères dans les produits de peinture et produits monomeren Diisocyanaten in Beschichtungsstoffen
similaires par chromatographie en phase liquide haute und ähnlichen Produkten mittels
performance couplée à un détecteur ultraviolet (HPLC- Hochleistungsflüssigkeitschromatographie mit
UV) (ISO 6923:2023) Ultraviolettdetektion (HPLC-UV) (ISO 6923:2023)
This European Standard was approved by CEN on 10 June 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6923:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 6923:2023 has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes” of the International Organization for Standardization (ISO) and has been taken over as
is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by December 2024, and conflicting national standards
shall be withdrawn at the latest by December 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 6923:2023 has been approved by CEN as EN ISO 6923:2024 without any modification.
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 6923:2023(E)
© 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
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Email: copyright@iso.org
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Published in Switzerland
ii
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 . 5
9.2.1 Preparation of the standard . 5
9.2.2 Quantification . 5
10 Calculation . 7
11 Expression of results . 8
12 Test report . 8
Annex A (informative) Details of validation. 9
Bibliography .10
iii
ISO 6923:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
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This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee
SC 16, Chemical analysis.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO 6923:2023(E)
Introduction
The analytical method described in this document was developed in 2011. The validity of this method
has been continuously tested until it was finalized in 2015 for the low content monomer diisocyanate
under 0,20 % mass fraction. Several internal interlaboratory tests have clearly demonstrated its
reproducibility. Moreover, under the framework of interlaboratory tests organized by the Association
of the European Adhesive and Sealant Industry (FEICA), it has been shown that the described method is
accurate in determining monomer diisocyanate content in various polyurethane (PU) matrices.
v
INTERNATIONAL STANDARD ISO 6923:2023(E)
Paints and varnishes — Determination of monomeric
diisocyanate content in coating materials and similar
products using high performance liquid chromatography
with ultraviolet
...
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