(ISo 787/5 International Standard INTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAYHAPOAHAR OPTAHM3AuWH NO CTAHAAPTM3AUWM·ORGANISATION INTE RNATIONALE DE NO RMALISATION ANsITnternatDocSect General methods of test for pigments and extenders Part 5 : Determination of oil absorption value Methodes génerales d'essai des pigments et matieres de charge - Partie 5 : Détermination de la prise d'huile First edition -- 1980-03-15 APR 1 1 1980 ISO 787/5-1980 (E) UDC 667.622 : 620.1 Ref. No. 1SO 787/5-1980 (E) Descriptors : paints, pigments, tests, density measurement, pyknometric analysis, test equipment, pyknometers. Price based on 2 pages ted without license from IHS Not for Resale 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 committees. Every member body interested in a subject for which a technical committee has been set up has the 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 Iso Council. International Standard iSO 787/5 was developed by Technical Committee ISO/TC 35, Paintsandvarnishes. 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 Portugal Austria Egypt, Arab Rep. of 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 C Printed in Switzerland 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 ly used for determining the same or a similar characteristic of a pigment or extender, 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 oC 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 of residue on sieve -- Water method Part 8 : Determination of matter soluble in water -- 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 Part 12 : Visual comparison of hue of powdered white pigment (Hollow cone method)1) Part 13 : Determination of water-soluble sulphates, chlorides and nit