SIST EN ISO 3262-2:1998

SLOVENSKI STANDARD
SIST EN ISO 3262-2:1998
01-oktober-1998
Polnila za barve - Specifikacije in metode preskušanja - 2. del: Barit (naravni
barijev sulfat) (ISO 3262-2:1998)
Extenders for paints - Specifications and methods of test - Part 2: Baryte (natural barium
sulfate) (ISO 3262-2:1998)
Füllstoffe für Beschichtungsstoffe - Anforderungen und Prüfverfahren - Teil 2:
Schwerspat (natürliches Bariumsulfat) (ISO 3262-2:1998)
Matieres de charge pour peintures - Spécifications et méthodes d'essai - Partie 2:
Barytine (sulfate de baryum naturel) (ISO 3262-2:1998)
Ta slovenski standard je istoveten z: EN ISO 3262-2:1998
ICS:
87.060.10 Pigmenti in polnila Pigments and extenders
SIST EN ISO 3262-2:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 3262-2:1998

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SIST EN ISO 3262-2:1998

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SIST EN ISO 3262-2:1998

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SIST EN ISO 3262-2:1998

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SIST EN ISO 3262-2:1998
INTERNATIONAL ISO
STANDARD 3262-2
First edition
1998-07-01
Extenders for paints — Specifications and
methods of test —
Part 2:
Barytes (natural barium sulfate)
Matières de charge pour peintures — Spécifications et méthodes d'essai —
Partie 2: Barytine (sulfate de baryum naturel)
A
Reference number
ISO 3262-2:1998(E)

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SIST EN ISO 3262-2:1998
ISO 3262-2:1998(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.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 3262-2 was prepared by Technical Committee ISO/TC 35, Paints and varnishes,
Subcommittee SC 2, Pigments and extenders.
Together with the other parts (see below), this part of ISO 3262 cancels and replaces ISO 3262:1975, which has been
technically revised. Part 1 comprises the definition of the term extender and a number of test methods that are
applicable to most extenders, whilst part 2 and the following parts specify requirements and, where appropriate,
particular test methods for individual extenders.
At present, the following parts of ISO 3262 are published or in preparation, under the general title Extenders for
paints — Specifications and methods of test:
— Part 1: Introduction and general test methods
— Part 2: Barytes (natural barium sulfate)
— Part 3: Blanc fixe
— Part 4: Whiting
— Part 5: Natural crystalline calcium carbonate
— Part 6: Precipitated calcium carbonate
— Part 7: Dolomite
— Part 8: Natural clay
— Part 9: Calcined clay
— Part 10: Natural talc/chlorite in lamellar form
©  ISO 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
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SIST EN ISO 3262-2:1998
©
ISO ISO 3262-2:1998(E)
— Part 11: Natural talc, in lamellar form, containing carbonates
— Part 12: Muscovite-type mica
— Part 13: Natural quartz (ground)
— Part 14: Cristobalite
— Part 15: Vitreous silica
— Part 16: Aluminium hydroxides
— Part 17: Precipitated calcium silicate
— Part 18: Precipitated sodium aluminium silicate
— Part 19: Precipitated silica
— Part 20: Fumed silica
— Part 21: Silica sand (unground natural quartz)
— Part 22: Diatomaceous earth (kieselguhr)
iii

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SIST EN ISO 3262-2:1998

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SIST EN ISO 3262-2:1998
©
INTERNATIONAL STANDARD  ISO ISO 3262-2:1998(E)
Extenders for paints — Specifications and methods of test —
Part 2:
Barytes (natural barium sulfate)
1 Scope
This part of ISO 3262 specifies requirements and corresponding methods of test for baryte (natural barium sulfate).
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part of
ISO 3262. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties
to agreements based on this part of ISO 3262 are encouraged to investigate the possibility of applying the most recent
editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International
Standards.
ISO 787-2:1981, General methods of test for pigments and extenders — Part 2: Determination of matter volatile at
105 °C.
ISO 787-3:1979, General methods of test for pigments and extenders — Part 3: Determination of matter soluble in
water — Hot extraction method.
ISO 787-7:1981, General methods of test for pigments and extenders — Part 7: Determination of residue on sieve —
Water method — Manual procedure.
ISO 787-9:1981, General methods of test for pigments and extenders — Part 9: Determination of pH value of an
aqueous suspension.
ISO 787-14:1973, General methods of test for pigments — Part 14: Determination of resistivity of aqueous extract.
ISO 842:1984, Raw materials for paints and varnishes — Sampling.
ISO 3262-1:1997, Extenders for paints — Specifications and methods of test — Part 1: Introduction and general test
methods.
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods.
ISO 4793:1980, Laboratory sintered (fritted) filters — Porosity grading, classification and designation.
3 Definition
For the purposes of this part of ISO 3262, the following definition applies:
3.1 barytes: Naturally occurring barium sulfate, BaSO .
4
1

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SIST EN ISO 3262-2:1998
©
ISO
ISO 3262-2:1998(E)
4 Requirements and test methods
For barytes complying with this part of ISO 3262, the essential requirements are specified in table 1 and the conditional
requirements are listed in table 2.
Table 1 — Essential requirements
Characteristic Unit Requirement Test method
Grade A Grade B
% (m/m) 90 80 See clause 6
BaSO content, min.
4
% (m/m) 0,5 See table 2 ISO 787-7
Residue on 45 μm
sieve, max.
1)
Matter volatile at % (m/m) 0,5 ISO 787-2
105 °C, max.
Loss on ignition, ISO 3262-1
max. % (m/m) 1 See table 2
Matter soluble in ISO 787-3
water, max.
pH value of aqueous 6 to 10 ISO 787-9
suspension
1) By agreement between the interested parties, test portions other than 10 g may be used.
5 Sampling
Take a representative sample of the product to be tested, as described in ISO 842.
1)
6 Determination of BaSO content
4
6.1 General
For barytes, the acid-insoluble barium, calculated as barium sulfate, is taken as the BaSO content.
4
6.2 Reagents
Use only reagents of recognized analytical grade and only water of at least grade 3 purity as defined in ISO 3696.
6.2.1 Hydrochloric acid, concentrated, approximately 37 % (m/m), ρ » 1,19 g/ml.
6.2.2 Hydrochloric acid, diluted 1 + 3.
Add 1 part by volume of concentrated hydrochloric acid (6.2.1) to 3 parts by volume of water.
6.2.3 Hydrochloric acid, diluted 1 + 100.
Add 1 part by volume of concentrated hydrochloric acid (6.2.1) to 100 parts by volume of water.

1) This determination includes strontium sulfate.
2

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SIST EN ISO 3262-2:1998
©
ISO
ISO 3262-2:1998(E)
Table 2 — Conditional requirements
Characteristic Unit Requirement Test method
Grade A Grade B
% (m/m) See table 1 To be agreed ISO 787-7
Residue on 45 μm
between the
sieve
interested parties
Particle size
1)
distribution % (m/m) To be agreed between the interested parties
(instrumental
method)
Colour ISO 3262-1
To be agreed between the interested
parties
Lightness To be ag
...