1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1833-7:2010Textiles Quantitativechemical analysisPart 7: Mixtures of polyamide and certainother fibres (method using formic acid) (ISO1833-7:2006)BS EN ISO 1833-7:2010
2、BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO1833-7:2010. It is identical to ISO 1833-7:2006. It supersedes BS4407:1988 which will be withdrawn on publication of the otherparts of the BS EN ISO 1833 series.The UK participation in its preparation was entrus
3、ted 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 necessaryprovisions of a contract. Users are responsible for its correctapplication. BS
4、I 2011ISBN 978 0 580 72128 1ICS 59.060.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2011.Amendments issued since publicationDate Text affectedEURO
5、PEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1833-7 October 2010 ICS 59.060.01 English Version Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide and certain other fibres (method using formic acid) (ISO 1833-7:2006) Textiles - Analyse chimique quantitative - Partie 7:
6、Mlanges de polyamide et de certaines autres fibres (mthode lacide formique) (ISO 1833-7:2006) Textilien - Quantitative chemische Analysen - Teil 7: Mischungen aus Polyamid- und bestimmten anderen Fasern (Ameisensure-Verfahren) (ISO 1833-7:2006) This European Standard was approved by CEN on 12 Septem
7、ber 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 standards may be obt
8、ained on application to the CEN 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 notified to the CEN Manag
9、ement 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, Lithuania, Luxembourg, Malta, Netherl
10、ands, 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 CEN All rights of exploitation in
11、 any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1833-7:2010: EBS EN ISO 1833-7:2010EN ISO 1833-7:2010 (E) 3 Foreword The text of ISO 1833-7:2006 has been prepared by Technical Committee ISO/TC 38 “Textiles” of the International Organization for Standardization
12、 (ISO) and has been taken over as EN ISO 1833-7:2010 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 identical text or by endorsement, at th
13、e 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 responsible for identifying any or all
14、 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, Finland, France, Germany, Greece, Hung
15、ary, 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 1833-7:2006 has been approved by CEN as a EN ISO 1833-7:2010 without any modif
16、ication. BS EN ISO 1833-7:2010ISO 1833-7:2006(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 Standards is normally carried out through
17、 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, also take part in the work. ISO collaborate
18、s 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 committees is to prepare International Standards
19、. 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 possibility that some of the elements of this
20、 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 1833-7 was prepared by Technical Committee ISO/TC 38, Textiles. This first edition of ISO 1833-7 cancels and replaces Clause 6 of ISO 1833:1977. ISO 1833:1977 will be c
21、ancelled and replaced by ISO 1833-1, ISO 1833-3, ISO 1833-4, ISO 1833-5, ISO 1833-6, ISO 1833-7, ISO 1833-8, ISO 1833-9, ISO 1833-10, ISO 1833-11, ISO 1833-12, ISO 1833-13, ISO 1833-14, ISO 1833-15, ISO 1833-16, ISO 1833-17, ISO 1833-18 and ISO 1833-19. ISO 1833 consists of the following parts, unde
22、r the general title 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
23、5: Mixtures of viscose, 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
24、using benzyl alcohol) 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
25、 certain other fibres (method using dimethylformamide) Part 13: Mixtures of certain chlorofibres and certain other fibres (method using carbon disulfide/acetone) BS EN ISO 1833-7:2010ISO 1833-7:2006(E) iv ISO 2006 All rights reserved Part 14: Mixtures of acetate and certain chlorofibres (method usin
26、g acetic acid) Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content) Part 16: Mixtures of polypropylene fibres and certain other fibres (method using xylene) Part 17: Mixtures of chlorofibres (homopolymers of vinyl chloride) and certain other fibres (method usi
27、ng sulfuric acid) 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 cyc
28、lohexanone) The 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
29、 viscose or certain 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
30、ISO 1833-7:2010INTERNATIONAL STANDARD ISO 1833-7:2006(E) ISO 2006 All rights reserved 1Textiles Quantitative chemical analysis Part 7: Mixtures of polyamide and certain other fibres (method using formic acid) 1 Scope This part of ISO 1833 specifies a method, using formic acid, to determine the perce
31、ntage of polyamide fibre, after removal of non-fibrous matter, in textiles made of binary mixtures of polyamide and cotton, viscose, cupro, modal, polyester, polypropylene, chlorofibre, acrylic or glass fibre. It is also applicable to mixtures with wool and animal hair, but when the wool content exc
32、eeds 25 %, the method described in ISO 1833-4 should be used. 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
33、(including any amendments) applies. ISO 1833-1, Textiles Quantitative chemical analysis Part 1: General principles of testing 3 Principle The polyamide is dissolved out from a known dry mass of the mixture, with aqueous formic acid. The residue is collected, washed, dried, and weighed; its mass, cor
34、rected if necessary, is expressed as a percentage of the dry mass of the mixture. The percentage of polyamide fibre is found by the difference. 4 Reagents Use the reagents described in ISO 1833-1 together with those given in 4.1 and 4.2. 4.1 Formic acid, 80 % (mass fraction) ( 1,19 g/ml). Dilute 880
35、 ml of 90 % (mass fraction) formic acid ( 1,20 g/ml) to 1 I with water. Alternatively, dilute 780 ml of 98 % to 100 % (mass fraction) formic acid ( 1,22 g/ml) to 1 I with water. The concentration is not critical within the range 77 % to 83 % (mass fraction) formic acid. NOTE Formic acid at 80 % (mas
36、s fraction) has a density = 1,186 g/ml. BS EN ISO 1833-7:2010ISO 1833-7:2006(E) 2 ISO 2006 All rights reserved4.2 Ammonia, dilute solution. Dilute 80 ml of concentrated ammonia solution ( 0,88 g/ml) to 1 I with water. 5 Apparatus Use the apparatus described in ISO 1833-1 together with that given in
37、5.1. 5.1 Conical flask, minimum capacity 200 ml, glass-stoppered. 6 Test procedure Follow the general procedure given in ISO 1833-1, and then proceed as follows. To the specimen contained in the conical flask, add 100 ml of formic acid per gram of specimen. Insert the stopper, shake the flask to wet
38、 out the specimen, and allow the flask to stand for 15 min, shaking it at intervals. Filter the contents of the flask through a weighed filter crucible and transfer any residual fibres to the crucible by washing out the flask with a little more formic acid. Drain the crucible using suction and wash
39、the residue on the filter successively with formic acid, hot water, dilute ammonia solution, and finally cold water, draining the crucible using suction after each addition. Do not apply suction until each washing liquor has drained under gravity. Finally, drain the crucible using suction, dry the c
40、rucible and residue, then cool and weigh them. 7 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. 8 Precision On a homogeneous mixture of textile materials the confidence limits of the results obtained by this
41、 method are not greater than 1 for the confidence level of 95 %. BS EN ISO 1833-7:2010ISO 1833-7:2006(E) ISO 2006 All rights reserved 3Bibliography 1 ISO 1833-4, Textiles Quantitative chemical analysis Part 4: Mixtures of certain protein and certain other fibres (method using hypochlorite) This page
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