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1、a Date: 15 August 2007 Origin: International Latest date for receipt of comments: 30 November 2007 Project no.: 2006/02973 Responsible committee: CH/205/3 Medical gloves Interested committees: Title: Draft BS ISO 28641 Rubber compounding ingredients Organic chemicals General test methods Supersessio
2、n information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT
3、BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 30 November 2007. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on comme
4、nting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within suc
5、h an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email ordersbsi-. British, International and foreign standards are also available from BSI Customer Services. British Standards on CD or Online are available
6、from British Standards Publishing Sales Limited. Tel: 01344 404409 or email bsonlinetechindex.co.uk. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which imp
7、lement International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/www.bsi-. Direct tel: 020 8996 7009 Responsible Committee Secretary: Committee Service Centre (BSI) E-mail: cscbsi- Draft for Public Comment Head Of
8、fice 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 07/30158191 DC Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:24:28 GMT+00:00 2007, Uncontrolled Copy, (c) BSI b Introduction This draft
9、standard is based on international discussions in which the UK has taken an active part. Your comments on this draft are invited and will assist in the preparation of the consequent standard. Comments submitted will be reviewed by the relevant BSI committee before sending the consensus UK vote and c
10、omments to the international secretariat, which will then decide appropriate action on the draft and the comments received. If no comments are received to the contrary, then the UK will approve this draft. If the international standard is approved, it is possible the text will be published as an ide
11、ntical British Standard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committe
12、e. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possi
13、ble; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank elec
14、tronic version of a comment form are available from the BSI web site at: http:/www.bsi- Template for comments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of
15、com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the
16、 UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, Lo
17、ndon South Bank University, Sat Sep 01 03:24:28 GMT+00:00 2007, Uncontrolled Copy, (c) BSI THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH. IN ADDITION TO THEIR EVALUATION
18、AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS. RECIPIENTS OF THIS DRAFT ARE INVITED TO SUB
19、MIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. DRAFT INTERNATIONAL STANDARD ISO/DIS 28641 International Organization for Standardization, 2007 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIO
20、NALE DE NORMALISATION ISO/TC 45/SC 3 Voting begins on: 2007-08-14 Secretariat: AFNOR Voting terminates on: 2008-01-14 Rubber compounding ingredients Organic chemicals General test methods Ingrdients de mlange du caoutchouc Produits chimiques organiques Mthodes dessai gnrales ICS 83.040.20 To expedit
21、e distribution, this document is circulated as received from the committee secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at publication stage. Pour acclrer la distribution, le prsent document est distribu tel quil est parvenu du secrtariat du comit. Le
22、travail de rdaction et de composition de texte sera effectu au Secrtariat central de lISO au stade de publication. Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:24:28 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ISO/DIS 28641 ii ISO 2007 All rights reserved P
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26、ht notice This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted under the applicable laws of the users country, neither this ISO draft nor any extract from it may be reproduced, stored in a retrieval system or transmitted in any form or by any mea
27、ns, electronic, photocopying, recording or otherwise, without prior written permission being secured. Requests for permission to reproduce should be addressed to either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 2
28、0 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Reproduction may be subject to royalty payments or a licensing agreement. Violators may be prosecuted. Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:24:28 GMT+00:00 2007,
29、 Uncontrolled Copy, (c) BSI ISO/DIS 28641 ISO 2007 All rights reserved iii Contents Page Foreword iv 1 Scope1 2 Normative references1 3 Abbreviations.2 4 Classification of tests .2 5 Common matters.2 5.1 Thermometer2 5.2 Instructions for carrying out the tests 2 6 Sampling 3 6.1 Apparatus.3 6.2 Samp
30、ling method 3 7 Drying of the sample.3 7.1 General .3 7.2 Drying method for liquid ingredient4 7.3 Drying method for solid ingredient .4 8 Test methods.5 8.1 Specific gravity5 8.2 Heating loss.9 8.3 Sieve residue .13 8.4 pH16 8.5 Melting point 18 8.6 Solidifying point 23 8.7 Softening point25 8.8 Bu
31、lk density.29 8.9 Ash content30 8.10 Refractive index.33 Annex A (informative) Examples of apparatus for sampling37 Annex B (informative) Examples of apparatus for drying 39 Annex C (normative) Verification of the accuracy in pH-meter .43 C.1 General .43 C.2 Reagents 43 C.3 pH-standard solution 43 C
32、.4 Apparatus.45 C.5 Verification.45 Annex D (normative) Calibration of the pH-meter.47 D.1 General .47 D.2 Reagents and pH-standard solutions47 D.3 Apparatus.47 D.4 Calibration47 Bibliography49 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:24:28 GMT+00:00 2
33、007, Uncontrolled Copy, (c) BSI ISO/DIS 28641 iv ISO 2007 All rights reserved 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 IS
34、O technical committees. Each member 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 c
35、losely with the International Electrotechnical 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. D
36、raft International Standards adopted 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. ISO 28641 was prepared by Technical Committee ISO/TC 45, Rubber and rubber
37、 products, Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry. Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:24:28 GMT+00:00 2007, Uncontrolled Copy, (c) BSI DRAFT INTERNATIONAL STANDARD ISO/DIS 28641 Rubber compounding ingred
38、ients Organic chemicals General test methods WARNING Persons using this International Standard should be familiar with normal laboratory practice. This International Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user
39、 to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1 Scope This International Standard specifies the sampling and test methods for the determination of the general characteristics of organic chemicals such as accelerators, antidegr
40、adants including wax and vulcanizing agents, excluding peroxides, and inorganic fillers. 2 Normative references The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. The most recent editions of the standards (including amendment
41、s) indicated below shall be applied. ISO 31-0, Quantities and units Part 0: General principles ISO 649-1:1981, Laboratory glassware Density hydrometers for general purposes Part 1: Specification ISO 1770, Solid-stem general purpose thermometers ISO 3310-1, Test sieves Technical requirements and test
42、ing Part 1: Test sieves of metal wire cloth ISO 3507, Laboratory glassware Pyknometers ISO 4625-1:2004, Binders for paints and varnishes Determination of softening point Part 1: Ring-and- ball method ISO 6353-2:1983, Reagents for chemical analysis Part 2: Specifications First series ISO 6353-3:1987,
43、 Reagents for chemical analysis Part 3: Specifications Second series ISO 6472, Rubber compounding ingredients Abbreviations ISO/TR 9272, Rubber and rubber products Determination of precision for test method standards ISO 11235:1999, Rubber compounding ingredients Sulfenamide accelerators Test method
44、s ISO 11236:2000, Rubber compounding ingredients p-Phenylenediamine (PPD) antidegradants Test methods ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling ISO 2007 All rights reserved 1 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01
45、03:24:28 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ISO/DIS 28641 3 Abbreviations The abbreviations for the chemical names of the organic accelerators and antidegradants to be used in this International Standard have been taken from ISO 6472. 4 Classification of tests The classification of tests spe
46、cified in this International Standard shall be as follows: specific gravity; heating loss; residue on sieve; pH; melting point; solidifying point; softening point; bulk density; ash content; refractive index. 5 Common matters 5.1 Thermometer The thermometer (bar) shall be calibrated and chosen accor
47、ding to the intended purpose. It may be in accordance with ISO 1770. The thermometer (bar) shall have an accuracy corresponding to the number of significant figures of the data or it shall be of higher accuracy. It shall be subject to instrumental-error verification 5.2 Instructions for carrying out
48、 the tests Care shall be taken to comply with the items listed below when carrying out the tests; a) Tests shall generally be carried out at room temperature and the measurements shall be carried out immediately after the procedure, unless otherwise specified. For a test on which temperature can hav
49、e a special effect, the procedure shall be carried out at the specified temperature; b) The pressure reduction in the desiccator shall not be more than 2,0 kPa, unless otherwise specified; c) For counting the number of drops, use an apparatus that can let water fall by 0,9 g to 1,1 g in mass when 20 drops fall at 20 C; d) The