ISO 2495:1972

Iron blue pigments for paints

Bleus de fer pour peintures

General Information

• Status: Withdrawn
• Publication Date: 31-Jul-1972
• Withdrawal Date: 31-Jul-1972
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: ISO/TC 256 - Pigments, dyestuffs and extenders
• Drafting Committee: ISO/TC 256 - Pigments, dyestuffs and extenders
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 16-Mar-1995

Relations

• Revised: ISO 2495:1995 - Iron blue pigments — Specifications and methods of test
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL STANDARD
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION *MtjKllYHAI’OLIHAII OPI AHMlAUUIl Il0 CTAHUAPTM3AUMM .ORGANISATION INTERNATIONALE DE NORMALISATION
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Iron blue pigments for paints
First edition - 1972-08-01
UDC 667.622.2 Ref. No. IS0 2495-1972 (E)
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Dascriptors : pigments, blue pigments. paints, sampling, chemical analysis, tests, materials specifications.
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Price based on 2 pages
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FOR E WO RD
IS0 (the International Organization for Standardization) is a worldwide federation
of national standards institutes (IS0 Member Bodies). The work of developing
International Standards is carried out through IS0 Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up 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.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as international
Standards by the IS0 Council.
International Standard IS0 2495 was drawn up by Technical Committee
ISO/TC 35, Paints and varnishes.
It was approved in September 1971 by the Member Bodies of the following
countries :
Austria Sweden
Italy
Egypt, Arab Rep. of Netherlands Switzerland
Germany New Zealand Turkey
India Poland United Kingdom
Israel Romania U.S.S.R.
I
I
No Member Body expressed disapproval of the document.
O Intarnational Orgmnization for Standardization, 1972 0
Printed in Switzerland

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IS0 2495-1972 (E)
INTE RNATl ON AL STANDARD
Iron blue pigments for paints
TAB LE - Requid chamcterbtbs and their toleranea
1 SCOPE AND FIELD OF APPLICATION
This International Standard specifies the requirements and
Characteristic
the corresponding methods of test for iron blue pigments
for paints. I ISOIR 787
Colour
Part I
Shall closely match
Colour on ISOIR 787
2 REFERENCES
that of the agreed
reduction Part XVI
sample
ISOIR 787, General methods of test for pigments.
Relative tinting ISOIR 787
I Part XVI
strength
ISO/R 842, Sampling raw materials for paints and varnishes.
Can vary with the
Matter volatile type of iron blue,
clause 6.21 )
but in no case shall
at 60 OC
3 DESCRIPTION
exceed 4.0 %
Can vary with the
Iron blue pigment is a pigment formed by the reaction of
Matter soluble
type of iron blue, ISOIR 787
iron salts with cyanoferrate(l1) or (ill), if necessary
in water; hot
but in no case shall Part I I I
followed by a treatment with oxidizing agents (for
extraction method
exceed 2.0 %
identification, see 6.1).
Acidity or alkalinity Maximum 20 ml of
The material shall be in the form of a soft dry powder or
of aqueous 0.1 N solution per clause 6.3
in such a condition that it may be readily reduced thereto
1 O0 g of pigment
extract
by crushing under a palette knife, without grinding action.
Shall not differ bymoi
NOTE - The pigment shall be free from added colouring matter and Oil absorption 1 O % from the ISOIR 787
than
from admixture of any substances other than those added during
value Part V
value agreed between
manufacture for the purpose of improving the quality or the
purchaser and vendor
working properties, or both, of the pigment.
be inferior
Shall not
Ease of
clause 6.4
to that of the
dispersion
agreed sample
4 REQUIRED CHARACTERISTICS AND THEIR
i
TOLERANCES
1) The method given in ISOIR 787 Part II (heating at 105 "Cl is
not suitable for iron blue pigments, because water of crystallization
Iron blue pigments for paints shall have the characteristics
tends to be lost at the higher temperature and reproducible results
are therefore not obtained.
shown in the following Table.
1
...