SIST EN ISO 7012-1:2025

SLOVENSKI STANDARD
01-junij-2025
Barve in laki - Določanje konzervansov v premazih, topnih v vodi - 1. del:
Določanje prostega formaldehida v pločevinki/posodi (ISO 7012-1:2025)
Paints and varnishes - Determination of preservatives in water-dilutable coating
materials - Part 1: Determination of in-can free formaldehyde (ISO 7012-1:2025)
Beschichtungsstoffe - Bestimmung von Konservierungsmitteln in wasserverdünnbaren
Beschichtungsstoffen - Teil 1: Bestimmung des freien Formaldehyds im Gebinde (ISO
7012-1:2025)
Peintures et vernis - Dosage des agents de préservation dans les produits de peinture
diluables à l’eau - Partie 1: Dosage du formaldéhyde libre en pot (ISO 7012-1:2025)
Ta slovenski standard je istoveten z: EN ISO 7012-1:2025
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 7012-1
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2025
EUROPÄISCHE NORM
ICS 87.040
English Version
Paints and varnishes - Determination of preservatives in
water-dilutable coating materials - Part 1: Determination
of in-can free formaldehyde (ISO 7012-1:2025)
Peintures et vernis - Dosage des agents de préservation Beschichtungsstoffe - Bestimmung von
dans les produits de peinture diluables à l'eau - Partie Konservierungsmitteln in wasserverdünnbaren
1: Dosage du formaldéhyde libre en pot (ISO 7012- Beschichtungsstoffen - Teil 1: Bestimmung des freien
1:2025) Formaldehyds im Gebinde (ISO 7012-1:2025)
This European Standard was approved by CEN on 27 March 2025.

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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7012-1:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 7012-1:2025) has been prepared by Technical Committee ISO/TC 35 "Paints
and varnishes" in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the
secretariat of which 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 October 2025, and conflicting national standards shall
be withdrawn at the latest by October 2025.
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/national committee. 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 7012-1:2025 has been approved by CEN as EN ISO 7012-1:2025 without any
modification.
International
Standard
ISO 7012-1
First edition
Paints and varnishes —
2025-04
Determination of preservatives in
water-dilutable coating materials —
Part 1:
Determination of in-can free
formaldehyde
Peintures et vernis — Dosage des agents de préservation dans les
produits de peinture diluables à l’eau —
Partie 1: Dosage du formaldéhyde libre en pot
Reference number
ISO 7012-1:2025(en) © ISO 2025

ISO 7012-1:2025(en)
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii
ISO 7012-1:2025(en)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
4.1 General .3
4.2 Equilibria of in-can free formaldehyde in the coating matrix .3
4.3 Equilibria of in-can free formaldehyde during extraction .3
4.4 Equilibria of in-can free formaldehyde during derivatization .3
4.5 Principle of Method A: Derivatization with acetylacetone (ACAC) combined with
photometric detection .3
4.5.1 Derivatization with ACAC.3
4.5.2 Detection and quantification with a spectral photometer .4
4.6 Principle of Method B: Derivatization with dinitrophenylhydrazine (DNPH) combined
with liquid chromatography (LC) separation and UV/VIS detection .4
4.6.1 Derivatization with DNPH .4
4.6.2 Separation, detection and quantification with LC-UV/VIS .4
4.7 Principle of Method C: Liquid chromatography (LC) separation followed by post-
column derivatization with ACAC and subsequent quantification with UV/VIS detection .4
4.7.1 Separation of free formaldehyde by liquid chromatography .4
4.7.2 Post-column derivatization with acetylacetone (ACAC) and quantification with
UV/VIS detection .4
5 Apparatus . 4
5.1 General .4
5.2 General apparatus .4
5.3 Apparatus for extraction .4
5.4 Apparatus for method A .5
5.5 Apparatus for method B .5
5.5.1 LC [HPLC or ultra-performance liquid chromatography (UHPLC)] system .5
5.5.2 Appropriate column .5
5.5.3 Vials .5
5.6 Apparatus for method C .6
5.6.1 LC [HPLC or ultra-performance liquid chromatography (UHPLC)] system with
post-column reactor .6
5.6.2 Appropriate column (e.g. RPC8, RPC18 column) .6
6 Reagents and materials . 6
6.1 General .6
6.2 General reagents .6
6.2.1 Demineralized water .6
6.2.2 Formaldehyde solution .6
6.2.3 Formaldehyde stock solution .6
6.2.4 Formaldehyde working solutions for calibration .6
6.2.5 Carrez solutions (optional) .7
6.3 Method A: Reagents for derivatization with ACAC .7
6.4 Method B: Reagents for derivatization with DNPH .7
6.5 Method C: Reagents for post-column derivatization with ACAC .7
6.6 Reagents for titration of formaldehyde standard .8
7 Procedure .
...