1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1833-21:2010Textiles Quantitativechemical analysisPart 21: Mixtures of chlorofibres, certainmodacrylics, certain elastanes, acetates,triacetates and certain other fibre
2、s (methodusing cyclohexanone) (ISO 1833-21:2006)BS EN ISO 1833-21:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO1833-21:2010. It is identical to ISO 1833-21:2006. It supersedes BS4407:1988 which will be withdrawn on publication of the otherparts of the
3、 BS EN ISO 1833 series.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/80, Chemical testing of textiles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovi
4、sions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 72142 7ICS 59.060.01; 59.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Com
5、mittee on 28 February 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1833-21 October 2010 ICS 59.060.01 English Version Textiles - Quantitative chemical analysis - Part 21: Mixtures of chlorofibres, certain modacrylics, certain elas
6、tanes, acetates, triacetates and certain other fibres (method using cyclohexanone) (ISO 1833-21:2006) Textiles - Analyse chimique quantitative - Partie 21: Mlanges de chlorofibres, certains modacryliques, certains lasthannes, actates, triactates et de certaines autres fibres (mthode la cyclohexanone
7、) (ISO 1833-21:2006) Textilien - Quantitative chemische Analysen - Teil 21: Mischungen aus Chlorfasern, bestimmten Modacrylfasern, bestimmten Elastanfasern, Acetatfasern, Triacetatfasern und bestimmten anderen Fasern (Cyclohexanon-Verfahren) (ISO 1833-21:2006) This European Standard was approved by
8、CEN on 12 September 2010. 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 and bibliographical references concerning such national stan
9、dards may be obtained on application to the CEN-CENELEC 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 responsibility of a CEN member into its own language and n
10、otified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithu
11、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 C
12、EN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1833-21:2010: EBS EN ISO 1833-21:2010EN ISO 1833-21:2010 (E) 3 Foreword The text of ISO 1833-21:2006 has been prepared by Technical Committee ISO/TC 38 “Textiles” of the Internatio
13、nal Organization for Standardization (ISO) and has been taken over as EN ISO 1833-21:2010 by Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an id
14、entical text or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held r
15、esponsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, F
16、inland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1833-21:2006 has been approved by CEN as
17、a EN ISO 1833-21:2010 without any modification. BS EN ISO 1833-21:2010ISO 1833-21:2006(E) ISO 2006 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International
18、Standards is normally carried out through ISO 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, al
19、so take part in the work. ISO collaborates closely 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 committ
20、ees is to prepare International Standards. Draft 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. Attention is drawn to the poss
21、ibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 1833-21 was prepared by Technical Committee ISO/TC 38, Textiles. ISO 1833 consists of the following parts, under the general ti
22、tle Textiles Quantitative chemical analysis: Part 1: General principles of testing Part 2: Ternary fibre mixtures Part 3: Mixtures of acetate and certain other fibres (method using acetone) Part 4: Mixtures of certain protein and certain other fibres (method using hypochlorite) Part 5: Mixtures of v
23、iscose, cupro or modal and cotton fibres (method using sodium zincate) Part 7: Mixtures of polyamide and certain other fibres (method using formic acid) Part 8: Mixtures of acetate and triacetate fibres (method using acetone) Part 9: Mixtures of acetate and triacetate fibres (method using benzyl alc
24、ohol) Part 10: Mixtures of triacetate or polylactide and certain other fibres (method using dichloromethane) Part 11: Mixtures of cellulose and polyester fibres (method using sulfuric acid) Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastanes and certain other f
25、ibres (method using dimethylformamide) Part 13: Mixtures of certain chlorofibres and certain other fibres (method using carbon disulfide/acetone) Part 14: Mixtures of acetate and certain chlorofibres (method using acetic acid) Part 15: Mixtures of jute and certain animal fibres (method by determinin
26、g nitrogen content) Part 16: Mixtures of polypropylene fibres and certain other fibres (method using xylene) BS EN ISO 1833-21:2010ISO 1833-21:2006(E) iv ISO 2006 All rights reserved Part 17: Mixtures of chlorofibres (homopolymers of vinyl chloride) and certain other fibres (method using sulfuric ac
27、id) Part 18: Mixtures of silk and wool or hair (method using sulfuric acid) Part 19: Mixtures of cellulose fibres and asbestos (method by heating) Part 21: Mixtures of chlorofibres, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibres (method using cyclohexanone) Th
28、e following parts are under preparation: Part 6: Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method using formic acid and zinc chloride) Part 20: Mixtures of elastane and certain other fibres (method using dimethylacetamide) Part 22: Mixtures of viscose or ce
29、rtain types of cupro or modal or lyocell and flax fibres (method using formic acid and zinc chlorate) Part 23: Mixtures of polyethylene and polypropylene (method using cyclohexanone) Part 24: Mixtures of polyester and some other fibres (method using phenol and tetrachloroethane) BS EN ISO 1833-21:20
30、10INTERNATIONAL STANDARD ISO 1833-21:2006(E) ISO 2006 All rights reserved 1Textiles Quantitative chemical analysis Part 21: Mixtures of chlorofibres, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibres (method using cyclohexanone) 1 Scope This part of ISO 1833 spec
31、ifies a method, using cyclohexanone, to determine the percentage of chlorofibre, modacrylic, elastane, acetate and triacetate, after removal of non-fibrous matter, in textiles made of binary mixtures of acetate, triacetate, chlorofibre, certain modacrylics, certain elastanes and wool, animal hair, s
32、ilk, cotton, cupro, modal, viscose, polyamide, acrylic and glass fibre. Where modacrylics or elastanes are present, a preliminary test should be carried out to determine whether the fibre is completely soluble in the reagent. It is also possible to analyse mixtures containing chlorofibres by using t
33、he test methods described in ISO 1833-13 or ISO 1833-17. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (incl
34、uding any amendments) applies. ISO 1833-1, Textiles Quantitative chemical analysis Part 1: General principles of testing 3 Principle The acetate and triacetate fibres, chlorofibres, certain modacrylics, and certain elastanes are dissolved out from a known dry mass with cyclohexanone at a temperature
35、 close to boiling point. The residue is collected, washed, dried and weighed. Its mass, corrected if necessary, is expressed as a percentage of the dry mass of the mixture. The percentage of chlorofibre, modacrylic, elastane, acetate and triacetate is found by the difference. BS EN ISO 1833-21:2010I
36、SO 1833-21:2006(E) 2 ISO 2006 All rights reserved4 Reagents Use the reagents described in ISO 1833-1 together with those given in 4.1 and 4.2. 4.1 Cyclohexanone, boiling point 156 C. 4.2 Ethanol, 50 % by volume. SAFETY PRECAUTIONS Cyclohexanone is flammable and toxic. Suitable precautions shall be t
37、aken in its use. 5 Apparatus Use the apparatus described in ISO 1833-1 together with those given in 5.1 to 5.5. 5.1 Hot extraction apparatus (see Annex A). NOTE This is a variant of the apparatus described in Reference 5. 5.2 Filter crucible, to contain the specimen. 5.3 Porous baffle (porosity grad
38、e 1), flat circular stopper of glass with a glass filter in the middle. The stopper is placed over the glass filter crucible. 5.4 Reflux condenser, that can be adapted to the distillation flask. 5.5 Heating device. 6 Procedure Follow the general procedure given in ISO 1833-1, and then proceed as fol
39、lows. Pour into the distillation flask 100 ml of cyclohexanone per gram of material. Insert the extraction container in which the filter crucible, containing the specimen and the porous baffle, slightly inclined, have previously been placed. Insert the reflux condenser. Bring to the boil and continu
40、e extraction for 60 min at a minimum rate of 12 cycles per hour. After extraction and cooling remove the extraction container, take out the filter crucible and remove the porous baffle. Wash the contents of the filter crucible three or four times with 50 % ethanol heated to about 60 C and subsequent
41、ly with 1 l of water at 60 C. Do not apply suction during or between the washing operations. Allow the liquid to drain under gravity and then apply suction. Finally, dry the crucible with the residue, then cool and weigh them. BS EN ISO 1833-21:2010ISO 1833-21:2006(E) ISO 2006 All rights reserved 37
42、 Calculation and expression of results Calculate the results as described in the general instructions of ISO 1833-1. The value of d is 1,00 with the following exceptions: silk 1,01; acrylic 0,98. 8 Precision On homogeneous mixtures of textile fibres, the confidence limits of results obtained by this
43、 method are not greater than 1 % for a confidence level of 95 %. BS EN ISO 1833-21:2010ISO 1833-21:2006(E) 4 ISO 2006 All rights reservedAnnex A (informative) Hot extraction apparatus Key 1 porous baffle 2 filter crucible Figure A.1 Hot extraction apparatus BS EN ISO 1833-21:2010ISO 1833-21:2006(E)
44、ISO 2006 All rights reserved 5Bibliography 1 ISO 1833-13, Textiles Quantitative chemical analysis Part 13: Mixtures of certain chlorofibres and certain other fibres (method using carbon disulfide/acetone) 2 ISO 1833-17, Textiles Quantitative chemical analysis Part 17: Mixtures of chlorofibres (homop
45、olymers of vinyl chloride) and certain other fibres (method using sulfuric acid) 3 ISO 2076, Textiles Man-made fibres Generic names 4 ISO 6938, Textiles Natural fibres Generic names and definitions 5 Melliand Textilberichte, 56, 1975, pp. 643-645 This page deliberately left blankThis page deliberate
46、ly left blankBSI is the independent national body responsible for preparing British Standardsand other standards-related publications, information and services. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.British Standards Instit
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