ISO NTERNATIONAL STANDARD 4715 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEXKAYHAPOAHAA OPTAHW3ALWA HO CTAHAAPTW3ALMWORGANISATION INTERNATIONALE DENORMALISATION ANst Iniernat Duc Sect Essential oils -- Quantitative evaluation of residue on evaporation Huilesessentielles-Evaluationquantitativeduresidud'évaporation First edition - 1978-10-01 OGT 1 6 1978 ISO4715-1978 (E) UDC 668.5 : 543.814 Ref. No. ISO 4715-1978 (E) Descriptors : essential oils, residues, chemical analysis, evaporation analysis. Price 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 International 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, aiso 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 4715 was developed by Technical Committee ISO/TC 54, Essential oils, and was circutated to the member bodies in August 1977. It has been approved by the member bodies of the following countries : Australia India South Africa, Rep. of Austria Italy Spain Brazil ueder Sri Lanka Canada Korea, Rep. of Thailand Chile Netherlands Turkey France Portugal U.S.S.R. No member body expressed disapproval of the document. InternationalOrganizationforStandardization,1978 Printed in Switzerland ISO4715-1978 (E) INTERNATIONAL STANDARD Essential oils -- Quantitative evaluation of residue on evaporation 1 SCOPEANDFIELDOFAPPLICATION 4 PRINCIPLE ThisInternational Standard specifies a method for Evaporation of the volatile fraction of the essential oil on quantitative evaluation of the residue on evaporation of a boiling water bath. Weighing of the residue. essential oils. 2REFERENCES 5 APPARATUS ISO212, Essential oils -Sampling. Usual laboratory equipment,and inparticular: Is0356,Essentialoils-Preparationof testsample 5.1Boilingwaterbath,withaplatehavingholesof70mm diameter. The water level in the water bath shall be 3 DEFINITION maintained constant,atabout50mmbelowthecover(see figure), throughout the test. residue on evaporation of an essential oil : The residue, expressed as a percentage by mass, obtained by eliminating the volatile fraction of the oil by heating on a boiling 5.2 Evaporating dish, of glass, resistant to the test water bath for the period of time specified in the Inter- conditions, of uniform thickness from 1 to 1,5 mm, and national Standard forthe oil underexamination. having other dimensions in accordance with the figure. Φ86±1 Dimensions in millimetres Φ 65 Position of cover 50 ± 2 Water level FIGURE -- Evaporating dish in position in the Water bath