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1、BRITISH STANDARD BS EN ISO 663:2001 Incorporating Corrigendum No. 1 Animal and vegetable fats and oils Determination of insoluble impurities content The European Standard EN ISO 663:2001 has the status of a British Standard ICS 67.200.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYR
2、IGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 663:2001 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Policy and Strategy Committee, was published under the a
3、uthority of the Standards Policy and Strategy Committee on 19 December 2001 BSI 11 March 2002 ISBN 0 580 38776 3 National foreword This British Standard is the official English language version of EN ISO 663:2001. It is identical with ISO 663:2000. It supersedes BS EN ISO 663:1995 which is withdrawn
4、. The UK participation in its preparation was entrusted to Technical Committee AW/11, Animal and vegetable fats and oils, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which i
5、mplement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not p
6、urport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible inter
7、national/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN I
8、SO title page, EN ISO foreword page, the ISO title page, pages ii and iii, a blank page, pages 1 to 7, the Annex ZA page, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.
9、 DateComments 13754 Corrigendum No. 1 11 March 2002 Incorporating Annex ZA Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 663 October 2001 ICS 67.200.10Supersedes EN ISO 663:1995 Engl
10、ish version Animal and vegetable fats and oils - Determination of insoluble impurities content (ISO 663:2000) Corps gras dorigines animale et vgtale - Dtermination de la teneur en impurets insolubles (ISO 663:2000) Tierische und pflanzliche Fette und le - Bestimmung des Anteils an unlslichen Verunre
11、inigungen (ISO 663:2000) This European Standard was approved by CEN on 4 October 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists
12、 and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsib
13、ility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlan
14、ds, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved wo
15、rldwide for CEN national Members. Ref. No. EN ISO 663:2001 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CORRECTED 2002-01-02 Foreword The text of the International Standard from Technical Committee ISO/TC 34 “Agricultural food products“
16、 of the International Organization for Standardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC 307 “Oilseeds, vegetable and animal fats and oils and their by-products - Methods of sampling and analysis“, the secretariat of which is held by AFNOR. This document
17、supersedes EN ISO 663:1995. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2002, and conflicting national standards shall be withdrawn at the latest by April 2002. According to the CEN/CENE
18、LEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Swi
19、tzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 663:2000 has been approved by CEN as a European Standard without any modification. NOTE Normative references to International Standards are listed in annex ZA (normative). EN ISO 663:2001 Licensed Copy: sh
20、effieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 663:2000(E) INTERNATIONAL STANDARD ISO 663 Third edition 2000-04-15 Corrected and reprinted 2001-02-01 Animal and vegetable fats and oils Determination of insoluble impurities content Corps
21、 gras dorigines animale et vgtale Dtermination de la teneur en impurets insolubles EN ISO 663:2001 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii EN ISO 663:2001 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2
22、006, Uncontrolled Copy, (c) BSI iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body i
23、nterested in a subject for which a technical committee has been established 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. ISO collaborates closely with the International Electrotechn
24、ical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Public
25、ation as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all
26、such patent rights. International Standard ISO 663 was prepared by Technical Committee ISO/TC 34, Agricultural food products, Subcommittee SC 11, Animal and vegetable fats and oils. This third edition cancels and replaces the second edition (ISO 663:1992). Precision data have been added. Annex A of
27、this International Standard is for information only. EN ISO 663:2001 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 663:2001 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI I
28、NTENRATIONAL TSANDADRISO 366:(0002)E 1 Animal and vegetable fats and oils Determination of insoluble impurities content 1Scope This International Standard specifies a method for the determination of the insoluble impurities content of animal and vegetable fats and oils. If it is not desired to inclu
29、de soaps (particularly calcium soaps) or oxidized fatty acids in the insoluble impurities content, it is necessary to use a different solvent and procedure. In this case the method should be the subject of agreement between the parties concerned. 2Normative reference The following normative document
30、 contains provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encourage
31、d to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 661:1989
32、, Animal and vegetable fats and oils Preparation of test sample. 3Term and definition For the purposes of this International Standard, the following term and definition applies. 3.1 insoluble impurities content quantity of dirt and other foreign matter insoluble in n-hexane or light petroleum under
33、the conditions specified in this International Standard NOTE 1The content is expressed as a percentage by mass. NOTE 2These impurities include mechanical impurities, mineral substances, carbohydrates, nitrogenous substances, various resins, calcium soaps, oxidized fatty acids, fatty acid lactones, a
34、nd (in part) alkali soaps, hydroxy-fatty acids and their glycerides. 4Principle A test portion is treated with an excess of n-hexane or light petroleum, then the solution obtained is filtered. The filter and residue are washed with the same solvent, then dried at 103 C, and weighed. EN ISO 663:2001
35、Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 366:(0002)E 2 5Reagent Use only reagents of recognized analytical grade. 5.1n-Hexane, or in the absence of this, light petroleum, having a distillation range between 30 C and 60 C and havin
36、g a bromine value less than 1. For either solvent, the residue on complete evaporation shall not exceed 0,002 g per 100 ml. 5.2Kieselguhr, purified, calcinated, loss in mass at 900 C (red heat) of 0,2 % by mass. 6Apparatus Usual laboratory apparatus and, in particular, the following. 6.1Analytical b
37、alance with an accuracy of ? 0,001 g. 6.2Electric drying oven, capable of operating at 103 C ? 2 C. 6.3Conical flask, of 250 ml capacity, with ground glass stopper. 6.4Desiccateur, containing an efficient desiccant. 6.5Ashless filter paper (maximum ash content 0,01 %, by mass); retention value of 98
38、 %, by mass, for particles of size greater than 2,5 ?m1), or an equivalent glass-fibre filter, of diameter 120 mm, together with a metal (preferably aluminium) or glass vessel with a well-fitting lid. (Alternative to 6.6 for all products except acid oils.) 6.6Filter crucible, glass, of grade P16 (po
39、re size 10 ?m to 16 ?m), diameter 40 mm, of capacity 50 ml, together with a suction bottle. (Alternative to 6.5 for all products including acid oils.) 7Sampling It is important that the laboratory receive a sample which is truly representative and has not been damaged or changed during transport and
40、 storage. Sampling is not part of the method specified in this International Standard. A recommended sampling method is given in ISO 5555. 8Preparation of test sample Prepare the test sample in accordance with ISO 661. 1)Whatman 42 (2,5 ?m) filter paper or Whatman GF/D glass-fibre filter are example
41、s of suitable products available commercially. This information is given for the convenience of users of this International Standard and does not constitute an endorsement by ISO of these products. EN ISO 663:2001 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:25:41 GMT+00:00 2006, Uncont
42、rolled Copy, (c) BSI ISO 366:(0002)E 3 9Procedure 9.1Test portion Weigh, to the nearest 0,01 g, approximately 20 g of the test sample (clause 8) into a conical flask (6.3). 9.2Determination 9.2.1Dry the filter paper and the vessel (6.5) with its lid, or the filter crucible (6.6), in the oven (6.2) s
43、et at 103 C. Allow to cool in the desiccator (6.4) and weigh to the nearest 0,001 g. 9.2.2Add 200 ml of n-hexane or light petroleum (5.1) to the flask containing the test portion (9.1). Stopper the flask and shake. For castor oil, the quantity of solvent may be increased to facilitate the operation,
44、 and this may necessitate the use of a larger flask. Leave to stand at about 20 C for about 30 min. 9.2.3Filter through the filter paper in a suitable funnel, or through the filter crucible, using suction if necessary. Wash the filter paper or filter crucible by pouring through it small amounts of t
45、he same solvent as used in 9.2.2, but no more than is necessary for the final filtrate to be free from fat or oil. Warm the solvent, if necessary, to a maximum temperature of 60 C, in order to dissolve any solidified fats retained on the filter. 9.2.4If a filter paper is used, remove it from the fun
46、nel and place it in the vessel. Allow most of the solvent remaining in the filter paper to evaporate in air, and complete the evaporation in the oven set at 103 C. Remove from the oven, close the vessel with its lid, allow to cool in the desiccator (6.4) and weigh to the nearest 0,001 g. 9.2.5If a f
47、ilter crucible is used, allow most of the solvent remaining in it to evaporate in air, and complete the evaporation in the oven set at 103 C. Remove from the oven, allow to cool in the desiccator (6.4) and weigh to the nearest 0,001 g. 9.2.6If it is desired to determine the content of organic impuri
48、ties, the use of a previously dried and weighed, ashless filter paper is necessary. In this case, the filter paper containing the insoluble impurities shall be ignited and the mass of ash obtained subtracted from the mass of insoluble impurities. The organic impurities content, expressed as a percen
49、tage by mass, is then calculated by multiplying this difference in mass by 100/m0, where m0is the mass, in grams, of the test portion. 9.2.7If analysing acid oils, coat the glass filter crucible with kieselguhr (5.2) as follows. In a 100 ml glass beaker, prepare a slurry consisting of 2 g of kieselguhr and approximately 30 ml of light petroleum (5.1). Pour the mixture into the filter crucible under reduced pressure in order to obtain a layer of kieselguhr on the glass filter. Dry the prepared glass filter crucible for 1 h in the oven (6.2) set at
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