756/1 International Standard (ISO INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEKAYHAPOAHAR OPTAHW3AUMA IO CTAHAAPTW3ALWM+ORGANISATION INTERNATIONALE DE NORMALISATION Propan-2-ol for industrial use - Methods of test - Part 1 : General Propanol-2ausageindustriel--Methodesd'essai-Partie1:Generalites First edition-1981-12-01 ISO 756/1-1981 (E) UDC661.725.4:543:620.1 Ref.No.ISO756/1-1981(E) Descriptors : industrial products, propanes, tests, generalities Price based on 3 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 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 ISo Council. International Standard ISO756/1was developedbyTechnical Committee ISO/TC 47, Chemistry, and was circulated to the member bodies in October 1980. It has been approved by the member bodies of the following countries : Australia Egypt, Arab Rep. of Korea, Rep. of Austria France Netherlands Belgium Germany, F. R. Poland Brazil Hungary Romania Bulgaria India Switzerland China Ireland United Kingdom Italy USSR Czechoslovakia The member body of the following country expressed disapproval of the document on technical grounds : South Africa, Rep. of International Standards ISO756/1,ISo 756/2 and iSO 756/3 cancel and replace ISO Recommendation R 756-1968 of which thcy constitute a technical revision. International Organization for Standardization.1981 Printed in Switzerland INTERNATIONALSTANDARD ISO756/1-1981 (E) Propan-2-ol for industrial use - Methods of test Part 1 : General Scopeandfield of application almost entirely filled by the sample, If it is necessary to seal the 1 bottle, take care to avoid any risk of contamination of the con- This part of ISo 756 gives general instructions relating to tents. methods of test for propan-2-ol (isopropyl alcohol) for in- dustrial use. NOTE A sample of not less than 750 ml is necessary for performing all the tests specified for the product. It also specifies the methods to be used for the determination of density at 20 C, for the determination of boiling range, for the determinationofdryresidueafterevaporationonawaterbath, Determination of densityat20oc for themeasurement of colour,for the determination of water content, and for the determination of aldehydes and ketones Use the method specified in ISO 758. content. The present list of parts of ISO 756 is given in the annex. 5 Determination of boiling range Use the method specified in ISo 918, subject to the following 2 References modifications appropriate to propan-2-ol. ISO 758, Liquidchemicalproductsforindustrialuse--Deter mination of densityat20 oc. 5.1 Thermometer,complying with the requirements of ISO 918, sub-clause 5.1.2, and of table 1. Iso759,Volatile organic liquids for industrialuse- Deter- Table1--Requirementsforthe thermometer mination of dry residue after evaporation on a water bath - General method. Maximumerror Temperature Maximum Graduations range in an interval Determination of water- Karl Fischer method error /SO760, of10°℃ (General method). ° 48 to 102 0,2 0,2 0,2 ISO 918, Volatile organic liquids for industrial use Deter- mination of distillation characteristics--Generalmethod.1) 5.2 Temperature correction iSo1843/3,Higheralcohols for industrialuse-Methodsof test-Part3:Determinationofcarbonylcompounds content Ifthecorrected barometricpressure deviatesfrom Potentiometricmethod. 1 013 mbar3), apply a correction to the observed temperature by subtracting 0,025 °c for every millibar