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1、BRITISH STANDARD BS ISO 4096:1978 Essential Oils (containing tertiary alcohols) Evaluation of free alcohols content by determination of ester value after cold formylation ICS 71.100.60; 71.040.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffi
2、eldun, na, Mon Nov 27 04:21:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 4096:1978 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15
3、September 2001 BSI 08-2001 ISBN 0 580 38316 4 National foreword This British Standard reproduces verbatim ISO 4096:1978 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee AW/54, Essential Oils which has the responsibility to: A
4、 list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Interna
5、tional Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a Br
6、itish Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international
7、and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, the ISO foreword page, pages 1 and 2, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when th
8、e document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 04:21:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWEX,4YHAPOCHAR OPrAHbl3ALWlR fl0 CTAHA
9、PTM3Al b) 50 ml of the aqueous carbonate Solution (5.4); sodium chloride-sodium c) 50 ml of the aqueous sodium chloride Solution (5.3); d) 50 ml of the aqueous (5.3). sodium chloride Solution After each addition, Shake strongly and allow to settle until the two layers are clearly separated. Remove t
10、he washing water. After the last Separation, collect the oily layer, dry it over magnesium or sodium sulphate (5.2), then filter. 8.4 Determination of ester value after formylation Determine the ester value of the formylated oil according to ISO/R 709. 9 EXPRESSION OF RESULTS The f ree alcoho Is con
11、tent, mass, is given by the formula tl4 (E.V., - E.V., ) 561 - 0,28 E.V., expressed as a percentage by The combined alcohols content, expressed as a percentage by mass, tan be calculated from the ester value, using the formula /ld x E.V., 561 The mass total alcohols content, r is obtained by adding
12、exp the ressed two p as a percentage by revious percentages. In the above formulas IM is the molecular mass of the reference alcohol specified in the International Standard for the essential oil being tested; E.V. ., is the ester value of the oil before formylation (8.2), determined according to ISO
13、/R 709; E.V., is the ester value of the oil after formylation (8.4), determined according to ISO/R 709. 10 TEST REPORT The test report shall state the method used and the result obtained. lt shall also mention any operating conditions not specified in this International Standard, or regarded as opti
14、onal, as well as any circumstances that might have influenced the result. The test complete report shall include identif ication of the all det Sample. ails required for the Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 04:21:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: shef
15、fieldun sheffieldun, na, Mon Nov 27 04:21:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 4096:1978 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards i
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23、988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details
24、such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 04:21:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI