918 International Standard (ISoO INTERNATIONALORGANIZATION FOR STANDARDIZATIONMEXAYHAPOAHAAOPTAHW3AUMANO CTAHAAPTW3ALMWORGANISATION INTERNATIONALEDENORMALISATION Volatile organic liquids for industrial use -- Determination of distillation characteristics Liquides organiques volatils a usage industriel -Determination des caracteristiques de distllation First edition - 1983-12-01 UDC 661.71/.727:536.423 Ref.No. ISO 918-1983 (E) Descriptors : industrial products, organic materials, volatile matters, liquids, tests, determination, distilation range, test equipment. Price based on 9 pages Foreword IS (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of developing International Standards is carried out through Iso technical committees. Every member body interested in a subject for which a technical committee has been authorized 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 ISO 918 was developed by Technical Committee ISO/TC 47, Chemistry, and was circulated to the member bodies in October 1982. It has been approved by the member bodies of the following countries : Australia Germany, F. R. Portugal Austria Hungary Romania Belgium India South Africa, Rep. of China Italy Switzerland Czechoslovakia NewZealand USSR Egypt, Arab Rep. of Nigeria France Poland The member body of the following country expressed disapproval of the document on technical grounds : Netherlands This International Standard cancels and replaces IS0 Recommendation R 918-1969, of which it constitutes a technical revision. This International Standard is one of three Iso publications dealing with the deter- mination of distillation characteristics. The two others are : iso3405,Petroleumproducts-Determinationofdistillation characteristics. Iso 4626,Volatile organic liquids-Determination of boiling range of organic solvents used as raw materials. It is recognized that there may be some overlapping between these three documents which were developed in separate technical committees. In the absence of agreement on a general International Standard on the subject, it has however been thought necessary to publish them. The completion in the future of such a general standard may therefore lead to the amendment or cancellation of this International Standard. International Organization for Standardization,1983 Printed in Switzerland INTERNATIONALSTANDARD ISO 918-1983 (E) Volatile organic liquids for industrial use - Determination of distillation characteristics 1 Scope and field of application 4.2 the volume of condensate when the thermometer in- dicates each of the distillation temperatures (previously ad- This tnternational Standard specifies an apparatus and method justed as indicated in clause 9) specified in the International for the determination of distillation characteristics of volatile Standardfortheproductundertest(plottingvolumeasafunc- organic liquids which (excluding petroleum products) having a tion of temperature). boiling point in the range 30 to 300 oC approximately and are stable during distillation in atmospheric conditions. 5 Apparatus 2 References Ordinary laboratory apparatus, and ISo3405, Petroleum products -Determination of distillation 5.1 Distillation apparatus, as shown in figure 1 comprising characteristics. 5.1.1 Distillation flask, available capacity 100ml, of Iso 4626, Volatile organic liquids -Determination of boiling borosilicate glass, as shown in figure 2. rangeoforganicsolventsusedasrawmaterials. 5.1.2 2 Thermometer, of the mercury-in-glass type, graduated 3 Definitions (see ISo 3405 and ISo 4626) in 0,2 c intervals, having a maximum err