Pigments, dyestuffs and extenders - Terminology - Part 2: Classification of colouring materials according to colouristic and chemical aspects (ISO 18451-2:2018)

This document applies to the industry producing colouring materials and the consumer who uses the
products of this industry. In this document, 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.

Pigmente, Farbstoffe und Füllstoffe - Begriffe - Teil 2: Einteilung nach koloristischen und chemischen Gesichtspunkten (ISO 18451-2:2018)

Dieses Dokument gilt für die Farbmittel herstellende Industrie und den Verbraucher, der die Produkte dieser Industrie verwendet. In diesem Dokument werden die Farbmittel nach koloristischen und nach chemischen Gesichtspunkten eingeteilt.
Einige Farbstoffe für die Anwendung in der keramischen und der Lebensmittelindustrie sind beispielhaft aufgeführt.

Pigments, colorants et matières de charge - Terminologie - Partie 2: Classification des matières colorantes en fonction de leurs aspects colorimétriques et chimiques (ISO 18451-2:2018)

Le présent document s'applique à l'industrie productrice de matières colorantes et aux consommateurs qui utilisent les produits de cette industrie. Dans ce document, les matières colorantes sont classées en fonction de leurs aspects colorimétriques et chimiques.
Certains colorants destinés aux industries de la céramique et alimentaire sont cités en exemple.

Pigmenti, barvila in polnila - Terminologija - 2. del: Razvrstitev sredstev za obarvanje glede na barvne in kemijske lastnosti (ISO 18451-2:2018)

Ta dokument se uporablja za industrijo, ki proizvaja barvne materiale, in potrošnike, ki uporabljajo izdelke te industrije. V tem dokumentu so barvni materiali razvrščeni glede na barvne in kemijske lastnosti.
Nekatera barvila za uporabo v keramični in živilski industriji so navedena kot primeri.

General Information

Status
Published
Public Enquiry End Date
01-Jul-2018
Publication Date
06-Nov-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
09-Oct-2018
Due Date
14-Dec-2018
Completion Date
07-Nov-2018

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SLOVENSKI STANDARD
SIST EN ISO 18451-2:2018
01-december-2018
1DGRPHãþD
SIST EN ISO 18451-2:2017
Pigmenti, barvila in polnila - Terminologija - 2. del: Razvrstitev sredstev za
obarvanje glede na barvne in kemijske lastnosti (ISO 18451-2:2018)

Pigments, dyestuffs and extenders - Terminology - Part 2: Classification of colouring

materials according to colouristic and chemical aspects (ISO 18451-2:2018)

Pigmente, Farbstoffe und Füllstoffe - Begriffe - Teil 2: Einteilung nach koloristischen und

chemischen Gesichtspunkten (ISO 18451-2:2018)

Pigments, colorants et matières de charge - Terminologie - Partie 2: Classification des

matières colorantes en fonction de leurs aspects colorimétriques et chimiques (ISO

18451-2:2018)
Ta slovenski standard je istoveten z: EN ISO 18451-2:2018
ICS:
01.040.87 Industrija barv (Slovarji) Paint and colour industries
(Vocabularies)
87.060.10 Pigmenti in polnila Pigments and extenders
SIST EN ISO 18451-2:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 18451-2:2018
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SIST EN ISO 18451-2:2018
EN ISO 18451-2
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2018
EUROPÄISCHE NORM
ICS 87.060.10 Supersedes EN ISO 18451-2:2017
English Version
Pigments, dyestuffs and extenders - Terminology - Part 2:
Classification of colouring materials according to
colouristic and chemical aspects (ISO 18451-2:2018)

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 18451-2:2018)

et chimiques (ISO 18451-2:2018)
This European Standard was approved by CEN on 26 August 2018.

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: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18451-2:2018 E

worldwide for CEN national Members.
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SIST EN ISO 18451-2:2018
EN ISO 18451-2:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 18451-2:2018
EN ISO 18451-2:2018 (E)
European foreword

This document (EN ISO 18451-2:2018) has been prepared by Technical Committee ISO/TC 256

"Pigments, dyestuffs and extenders" in collaboration with 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 February 2019, and conflicting national standards

shall be withdrawn at the latest by February 2019.

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.

This document supersedes EN ISO 18451-2:2017.

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 18451-2:2018 has been approved by CEN as EN ISO 18451-2:2018 without any

modification.
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SIST EN ISO 18451-2:2018
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SIST EN ISO 18451-2:2018
INTERNATIONAL ISO
STANDARD 18451-2
Second edition
2018-08
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
aspects colorimétriques et chimiques
Reference number
ISO 18451-2:2018(E)
ISO 2018
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SIST EN ISO 18451-2:2018
ISO 18451-2:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 18451-2:2018
ISO 18451-2:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Classification of inorganic and organic colouring materials in accordance with

colouristic aspects .............................................................................................................................................................................................. 1

5 Classification of inorganic and organic colouring materials in accordance with

chemical aspects ................................................................................................................................................................................................... 8

Bibliography .............................................................................................................................................................................................................................15

© ISO 2018 – All rights reserved iii
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SIST EN ISO 18451-2:2018
ISO 18451-2:2018(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 voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 256, Pigments, dyestuffs and extenders.

This second edition cancels and replaces the first edition (ISO 18451-2:2015), of which it constitutes a

minor revision. The changes compared to the previous edition are as follows:
— Clause 2 has been updated;
— the boilerplate of Clause 3 has been updated;

— the typing errors, e.g. missing names of colouring materials, have been corrected;

— the numbering of some footnotes has been corrected.
A list of all parts in the ISO 18451 series can be found on the ISO website.

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 2018 – All rights reserved
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SIST EN ISO 18451-2:2018
ISO 18451-2:2018(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 4 and 5.

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 document only one Colour Index designation is given.

In the “Classification scheme” in Clause 4, 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 4 and 5 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.
© ISO 2018 – All rights reserved v
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SIST EN ISO 18451-2:2018
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SIST EN ISO 18451-2:2018
INTERNATIONAL STANDARD ISO 18451-2:2018(E)
Pigments, dyestuffs and extenders — Terminology —
Part 2:
Classification of colouring materials according to
colouristic and chemical aspects
1 Scope

This document applies to the industry producing colouring materials and the consumer who uses the

products of this industry. In this document, 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 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 18451-1, Pigments, dyestuffs and extenders — Terminology — Part 1: General terms

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 18451-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org
4 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 2018 – All rights reserved 1
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SIST EN ISO 18451-2:2018
ISO 18451-2:2018(E)
Key
See Introduction.

Corresponding products (“organic white pigments”) are at present without practical importance.

Corresponding products (“organic white dyestuffs”) do not exist for physical reasons.

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

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, com-

pigments bined with light scattering.

Coloured The optical effect is based on light absorption, dependent on the wavelength.

dyestuffs
2 © ISO 2018 – All rights reserved
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SIST EN ISO 18451-2:2018
ISO 18451-2:2018(E)

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 least on one of the following effects:

— in the case of metallic flake pigments on the directed reflectance of mainly flat

shaped and aligned metallic pigment particles;
— in the case of nacreous pigments on the directed reflectance of mainly flat
shaped and aligned transparent small plates;

— in the case of interference pigments on the phenomenon of light interference.

Luminous The optical effect is based on their ability to absorb radiation and to emit it as

colouring light of greater wavelength without delay with regard to time (fluorescence) or

materials with delay with regard to time (phosphorescence).

Examples regarding the classification in accordance with colouristic aspects are given in Table 1.

Table 1 — Classification of inorganic and organic colouring materials in accordance with

colouristic aspects
No. Colouring material Colour index
4.1 Inorganic colouring materials
4.1.1 Inorganic pigments
4.1.1.1 Inorganic white pigments
Aluminium silicate Pigment White 19 77004
Barium sulfate Pigment White 21 77120
Calcium carbonate Pigment White 18 77220
Lithopone Pigment White 5 77115
Titanium dioxide Pigment White 6 77891
Zinc oxide/zinc white Pigment White 4 77947
Zinc sulfide Pigment White 7 77975
4.1.1.2 Inorganic coloured pigments
Bismuth vanadate Pigment Yellow 184 771740
Cadmium yellow Pigment Yellow 37 77199
Chromium yellow Pigment Yellow 34 77603
Chromium titanium yellow Pigment Brown 24 77310
Iron oxide yellow Pigment Yellow 42 77492
Nickel titanium yellow Pigment Yellow 53 77788
Praseodymium yellow Pigment Yellow 159 77997
Cadmium orange Pigment Orange 20 77202
Molybdate orange Pigment Red 104 77605
Titanium zinc tin oxide Pigment Orange 82
Cadmium red Pigment Red 108 77202
Cerium sulfide Pigment Red 265 77283 : 2
See Introduction and Bibliography.
Predominantly used in the ceramic industry.

Corresponding products (“organic white pigments”) are at present without practical importance.

Corresponding products (“organic white dyestuffs”) do not exist for physical reasons.

Corresponding products (“organic effect dyestuffs”) do not exist for physical reasons.

© ISO 2018 – All rights reserved 3
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SIST EN ISO 18451-2:2018
ISO 18451-2:2018(E)
Table 1 (continued)
No. Colouring material Colour index
Iron oxide red Pigment Red 101 77491
Molybdate red Pigment Red 104 77605
Ultramarine red Pigment Violet 15 77007
Zirconium iron pink Pigment Red 232 77996
Manganese violet Pigment Violet 16 77742
Ultramarine violet Pigment Violet 15 77007
Cobalt blue Pigment Blue 28 77346
Iron blue Pigment Blue 27 77510
Ultramarine blue Pigment Blue 29 77007
Vanadium blue Pigment Blue 71 77998
Chromium oxide green Pigment Green 17 77288
Cobalt green Pigment Green 50 77377
Chromium iron brown Pigment Brown 29 77500
Iron oxide brown Pigment Br
...

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