787/5 OS nternational Standard INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEKAYHAPOAHAA OPTAHW3AUMA NO CTAHAAPTW3AMW+ORGANISATION INTERNATIONALE DE NORMALISATION General methods of test for pigments and extenders Part 5 : Determination of oil absorption value Méthodes generales d'essai despigments et matieresde charge- Partie5:Déterrminationdelaprisedhuile First edition - 1980-03-15 ISO 787/5-1980 (E) UDC667.622:620.1 Ref.No.1SO787/5-1980 (E) Descriptors : paints, pigments, tests, density mcasurement, pyknometric analysis, test equipment, pyknometers. Pricc based on 2 pages Foreword ISo (the international Organization for Standardization) is a worldwide federation of national standards institutes (ISO member bodies). The work of developing Inter- national Standards is carried out through Iso technical cormmittees. Every member body interested in a subject for which a technical committec has bcen 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 mcmber bodies for approval before their acceptance as International Standards by the iSo Council. International Standard ISO787/5 was developed by Technical Committee ISO/TC 35, Paints andvarnishes. It was submitted directly to the ISO Council, in accordance with clause 5.10.1 of part 1 of the Directives for the technical work of ISo. It cancels and replaces Part 5 of ISO Recommendation R 787-1968, which had been approved by the member bodies of the following countries : Australia Czechoslovakia Netherlands Austria Egypt, Arab Rep. of Portugal Belgium India Spain Brazil Iran Switzerland Canada Ireland United Kingdom Chile Israel USSR Colombia Japan Yugoslavia No member body had expressed disapproval of the document. International Organization for Standardization,1980 Printed in Switzerland ii The purpose of this International Standard is to establish a series 'of general test methods for pigments and extenders which are suitable for all or many of the individual pigments and extenders for which specifications might be required. In such cases, a cross-reference to the general method should be included in the International Standard relating to that pigment or extender, with a note of any detailed modifications which might be needed in view of the special properties of the product in question. Technical Committee ISO/TC 35 decided that all the general methods should be published as they become available, as parts of a single International Standard, in order to emphasize the relationship of each to the whole series. The Technical Committee also decided that, where two or more procedures were wide- there would be no objection to including more than one of them in the IsO series. In such cases it will, however, be essential to state clearly in a specification which method is to be used and, in the test report, which method has been used. Parts of the series already published are as follows : Part 1 : Comparison of colour Part 2 : Determination of matter volatile at 105 °C Part 3 : Determination of matter soluble in water - Hot extraction method Part 4 : Determination of acidity or alkalinity of the aqueous extract Part 5 : Determination of oil absorption value Part 6 : Determination of residue on sieve Oil method Part 7 :Determination ofresidue on sieve - Water method Part 8 :Determination of mattersoluble in water -C Cold extraction method Part 9 :Determination of pH value of an aqueous suspension Part 10 : Determination of density -Pyknometer method Part 11 : Determination of tamped volume and apparent density after tamping method)1) Part 13 : Determination of water-soluble sulphates, chlorides and nitrates Part 14 : Determination of resistivity of aqueous extract Part 15 : Comparison of resistance of coloured pigments of similar types to light from a specified light source colour