BS EN ISO 4684-2006 Leather - Chemical tests - Determination of volatile matter《皮革 化学试验 测定挥发性物质》.pdf

1、BRITISH STANDARD BS EN ISO 4684:2005 Leather Chemical tests Determination of volatile matter The European Standard EN ISO 4684:2005 has the status of a British Standard ICS 59.140.30 BS EN ISO 4684:2005 This British Standard was published under the authority of the Standards Policy and Strategy Comm

2、ittee on 25 January 2006 BSI 25 January 2006 ISBN 0 580 47023 7 National foreword This British Standard is the official English language version of EN ISO 4684:2005. It is identical with ISO 4684:2005. The UK participation in its preparation was entrusted to Technical Committee TCI/69, Footwear and

3、leather, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promul

4、gate them in the UK. A 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 Catalogue under the section entit

5、led “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance

6、 with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii and iii, a blank page, pages 1 to 4, an inside back cover a

7、nd a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO4684 November2005 ICS59.140.30 EnglishVersion LeatherChemicaltestsDeterminat

8、ionofvolatilematter(ISO 4684:2005) CuirEssaischimiquesDterminationdesmatires volatiles(ISO4684:2005) LederChemischePrfungenBestimmungflchtiger Substanzen(ISO4684:2005) ThisEuropeanStandardwasapprovedbyCENon14October2005. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulateth

9、econditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,Ger

10、man).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greec

11、e,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussel

12、s 2005CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO4684:2005:E Foreword This document (EN ISO 4684:2005) has been prepared by Technical Committee CEN/TC 289 “Leather“, the secretariat of which is held by UNI, in collaboration with the Internat

13、ional Union of Leather Technologists and Chemists Societies (IULTCS). It is based on Method IUC 5 of the International Union of Leather Technologists and Chemists Societies. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endo

14、rsement, at the latest by May 2006, and conflicting national standards shall be withdrawn at the latest by May 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyp

15、rus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 4684:2005 has

16、been approved by CEN as EN ISO 4684:2005 without any modifications. EN ISO 4684:2005 Reference number ISO 4684:2005(E) IULTCS/IUC 5:2005(E)INTERNATIONAL STANDARD ISO 4684 IULTCS/IUC 5 First edition 2005-11-01 Leather Chemical tests Determination of volatile matter Cuir Essais chimiques Dtermination

17、des matires volatiles EN ISO 4684:2005ii 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 memb

18、er body interested 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 Ele

19、ctrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adop

20、ted by the technical committees are circulated to the member bodies for voting. Publication 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 document may be the subject of pate

21、nt rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4684 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, in collaboration with the Chemistry Commission of the International Union of Leather Technolo

22、gists and Chemists Societies (IUC Commission, IULTCS), in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). It is based on IULTCS method IUC 5. IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to further th

23、e advancement of leather science and technology. IULTCS has three Commissions, which are responsible for establishing international methods for the sampling and testing of leather. ISO recognizes IULTCS as an international standardizing body for the preparation of test methods for leather. EN ISO 46

24、84:2005blank1 Leather Chemical tests Determination of volatile matter 1 Scope This International Standard specifies a method of determination of volatile matter which is applicable to all leather types. It is not possible to determine the exact moisture content of leather by this method. This is bec

25、ause at elevated temperatures other volatile substances escape and tannins and fats can be oxidized. Some absorbed water may be left in the leather after drying. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, on

26、ly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location ISO 4044, Leather Preparation of chemical test samples 3 Principle Leather

27、samples are finely ground and dried in an oven at 102 C 2 C to constant mass. The volatile matter is expressed as the ratio of the change in mass of the sample to the initial mass before drying. 4 Terms and definitions For the purposes of this document, the following terms and definitions apply. 4.1

28、 volatile matter leather loss of mass by leather when dried to constant mass at 102 C 2 C, as described in this method 5 Apparatus Usual laboratory apparatus is required and, in particular, the following. 5.1 Flat, shallow weighing vessels with ground glass stoppers, or flat open dishes. NOTE Small

29、weighing vessels with ground glass stoppers allow more accurate work to be done than do open dishes. 5.2 Oven, capable of being maintained at 102 C 2 C. 5.3 Analytical balance, weighing to an accuracy of 0,001 g. 5.4 Desiccator, suitable for cooling the weighing vessels. EN ISO 4684:2005EN ISO 4684:

30、2005 2 6 Sampling and preparation of samples If possible, sample in accordance with ISO 2418 and grind leather in accordance with ISO 4044. If sampling in accordance with ISO 2418 is not possible (e.g. leathers from finished products such as shoes, garments), details about sampling shall be given al

31、ong with the test report. 7 Procedure Weigh, to the nearest 0,001 g, an empty weighing vessel that has been dried at 102 prior to weighing and use. Weigh, to the nearest 0,001 g, approximately 3 g of the sample into the tared weighing vessel and dry at 102 C 2 C for 5 h. Cool the vessel and contents

32、 for 30 min in a desiccator and weigh. When working with open dishes, not more than one dish should be put into a small desiccator to cool at any one time, and not more than two dishes should be put into a large desiccator. Repeat the drying, cooling and weighing, but with drying times of 1 h until

33、the further loss in mass does not exceed 3 mg (i.e. 0,1 % of the sample mass), or the total drying time equals 8 h. Record the final mass of the sample and weighing vessel, and calculate the dried mass of sample. 8 Calculation and expression of results Calculate the mass fraction of the volatile mat

34、ter, w, in percent. where m 1is the mass of the sample before drying; and m 2is the mass of the sample after drying. 9 Test report The test report shall include the following information: a) the results obtained; b) a reference to this International Standard, i.e. “ISO 4684:2005”; c) a description o

35、f the sample tested; d) details of any deviations from the procedure, or special circumstances which may have affected the results. 10 Repeatability The results of duplicate determinations should not differ by more than 0,2 %, calculated on the original mass of leather. If the duplicates differ by m

36、ore than 0,2 %, further repeat analysis shall be carried out. () 12 1 100mm w m = % C EN ISO 4684:2005 3 Annex A (informative) Information for leathers which contain large quantities of oxidizable fats For leathers which contain large quantities of oxidizable fats, additional useful information may

37、be gained by carrying out the following procedure. Determine the fats and other solubles by using the method described in ISO 4048 1 . Determine the dry mass of the resultant dichloromethane-extracted leather by drying in accordance with the procedure above. Calculate the total loss of mass, express

38、ed as a percentage of the mass of the prepared sample taken, and subtract the percentage extractable substances, thus giving the percentage volatile matter. If this procedure is used, full details should be included in the test report. 4 Bibliography 1 ISO 4048, Leather Determination of matter solub

39、le in dichloromethane EN ISO 4684:2005blankBS EN ISO 4684:2005 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 in Europe and at the international level. I

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