EN ISO 18451-2:2017

SLOVENSKI STANDARD
01-december-2017
Pigmenti, barvila in polnila - Terminologija - 2. del: Razvrstitev sredstev za
obarvanje glede na barvne in kemijske lastnosti (ISO 18451-2:2015)
Pigments, dyestuffs and extenders - Terminology - Part 2: Classification of colouring
materials according to colouristic and chemical aspects (ISO 18451-2:2015)
Pigmente, Farbstoffe und Füllstoffe - Begriffe - Teil 2: Einteilung nach koloristischen und
chemischen Gesichtspunkten (ISO 18451-2:2015)
Pigments, colorants et matières de charge - Terminologie - Partie 2: Classification des
matières colorantes en fonction de leurs propriétés coloristiques et chimiques (ISO
18451-2:2015)
Ta slovenski standard je istoveten z: EN ISO 18451-2:2017
ICS:
87.060.10 Pigmenti in polnila Pigments and extenders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18451-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2017
EUROPÄISCHE NORM
ICS 87.060.10
English Version
Pigments, dyestuffs and extenders - Terminology - Part 2:
Classification of colouring materials according to
colouristic and chemical aspects (ISO 18451-2:2015)
Pigments, colorants et matières de charge - Pigmente, Farbstoffe und Füllstoffe - Begriffe - Teil 2:
Terminologie - Partie 2: Classification des matières Einteilung nach koloristischen und chemischen
colorantes en fonction de leurs aspects colorimétriques Gesichtspunkten (ISO 18451-2:2015)
et chimiques (ISO 18451-2:2015)
This European Standard was approved by CEN on 30 August 2017.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18451-2:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 18451-2:2015 has been prepared by Technical Committee ISO/TC 256 “Pigments,
dyestuffs and extenders” of the International Organization for Standardization (ISO) and has been taken
over as EN ISO 18451-2:2017 by Technical Committee CEN/TC 298 “Pigments and extenders” 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 March 2018, and conflicting national standards shall
be withdrawn at the latest by March 2018.
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.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 18451-2:2015 has been approved by CEN as EN ISO 18451-2:2017 without any
modification.
INTERNATIONAL ISO
STANDARD 18451-2
First edition
2015-11-01
Pigments, dyestuffs and extenders —
Terminology —
Part 2:
Classification of colouring materials
according to colouristic and chemical
aspects
Pigments, colorants et matières de charge — Terminologie —
Partie 2: Classification des matières colorantes en fonction de leurs
propriétés coloristiques et chimiques
Reference number
ISO 18451-2:2015(E)
©
ISO 2015
ISO 18451-2:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
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CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved

ISO 18451-2:2015(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Classification of inorganic and organic colouring materials in accordance with
colouristic aspects . 1
3 Classification of inorganic and organic colouring materials in accordance with
chemical aspects . 9
Bibliography .16
ISO 18451-2:2015(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
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 256, Pigments, dyestuffs and extenders.
ISO 18451 consists of the following parts, under the general title Pigments, dyestuffs and extenders —
Terminology:
— Part 1: General terms
— Part 2: Classification of colouring materials according to colouristic and chemical aspects
iv © ISO 2015 – All rights reserved

ISO 18451-2:2015(E)
Introduction
In accordance with ISO 18451-1, it depends on the individual application as to whether a substance is
to be considered as a pigment or as an extender. Substances like aluminium silicate, barium sulfate and
calcium carbonate are taken into consideration in Clauses 2 and 3.
In addition to the examples of the colouring materials, the designation in accordance with the Colour
1)
Index has been included. However it is to be noted that for a number of the given designations of colouring
materials (which are partly collective designations) not only one designation in accordance with the
Colour Index is possible, even if in this part of ISO 18451 only one Colour Index designation is given.
In the “Classification scheme” in Clause 2, some spaces are empty. Corresponding colouring materials
are either without practical importance or they do not exist for physical reasons.
Inorganic dyestuffs, e.g. those for use with enamel, glass, ceramics and food, have been only mentioned
in Clauses 2 and 3 but not classified in accordance with certain aspects. The reason for this is that up to
now such colouring materials are excluded from the work of ISO/TC 256.
1) The Colour Index (briefly: C.I.) is a work of reference existing since 1925, and comprising all usual colouring
materials and dyestuff chemicals being used as their basis. It is accepted as a standard work in the field of pigment
and dyestuff chemistry.
INTERNATIONAL STANDARD ISO 18451-2:2015(E)
Pigments, dyestuffs and extenders — Terminology —
Part 2:
Classification of colouring materials according to
colouristic and chemical aspects
1 Scope
This part of ISO 18451 applies for the industry producing colouring materials and the consumer who
uses the products of this industry. In this part of ISO 18451, the colouring materials are classified in
accordance with colouristic and chemical aspects.
Some dyestuffs for use in the ceramics and food industries are listed as examples.
2 Classification of inorganic and organic colouring materials in accordance with
colouristic aspects
Inorganic and organic colouring materials are classified in accordance with colouristic aspects as
given in Figure 1.
ISO 18451-2:2015(E)
2 Colouring materials
2.1 2.2
Inorganic Organic
colouring materials colouring materials
a
2.1.1 2.1.2 2.2.1 2.2.2
Inorganic Inorganic Organic Organic
pigments dyestuffs pigments dyestuffs
2.1.1.1
bc
Inorganic 2.2.1.1 2.2.2.1
white pigments
2.1.1.2
2.2.1.2 2.2.2.2
Inorganic
Organic Organic
coloured pigments
coloured pigments coloured dyestuffs
2.1.1.3
Inorganic
2.2.1.3 2.2.2.3
black pigments
Organic Organic
black pigments black dyestuffs
2.1.1.4
Inorganic
effect pigments 2.2.1.4
d
Organic
2.2.2.4
2.1.1.5
effect pigments
Inorganic
luminous pigments
2.2.1.5 2.2.2.5
Organic Organic
2.1.1.6
luminous pigments luminous dyestuffs
Near infra-red (NIR)
re lecting pigments
2.1.1.7
Infra-red (IR)
absorbing pigments
Key
a
See Introduction.
b
Corresponding products (“organic white pigments”) are at present without practical importance.
c
Corresponding products (“organic white dyestuffs”) do not exist for physical reasons.
d
Corresponding products (“organic effect dyestuffs”) do not exist for physical reasons.
Figure 1 — Classification of inorganic and organic colouring materials in accordance with
colouristic aspects
2 © ISO 2015 – All rights reserved

ISO 18451-2:2015(E)
The above classification is based on optical effects the reasons of which are given in the following.
White pigments The optical effect is based on light scattering, independent on the wavelength.
Coloured The optical effect is based on light absorption, dependent on the wavelength,
pigments combined with light scattering.
Coloured The optical effect is based on light absorption, dependent on the wavelength.
dyestuffs
Black The optical effect is based on light absorption, independent on the wavelength, in
colouring the visual range of light.
materials
Effect pigments The optical effect is based at l
...