1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1833-6:2010Textiles Quantitativechemical analysisPart 6: Mixtures of viscose or certain typesof cupro or modal or lyocell and cottonfibres (method using formic acid and
2、 zincchloride) (ISO 1833-6:2007)BS EN ISO 1833-6:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 1833-6:2010. It is identical to ISO 1833-6:2007. It supersedes BS 4407:1988 which will be withdrawn on The UK participation in its preparation was entrusted
3、 to Technical Committee TCI/80, Chemical testing of textiles.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. B
4、SI 2011 ISBN 978 0 580 72127 4 ICS 59.060.01 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 2011.Amendments issued since publicationDate Text affectedpublicatio
5、n of the other parts of the BS EN ISO 1833 series.28 FebruaryEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1833-6 October 2010 ICS 59.060.01 English Version Textiles - Quantitative chemical analysis - Part 6: Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fib
6、res (method using formic acid and zinc chloride) (ISO 1833-6:2007) Textiles - Analyse chimique quantitative - Partie 6: Mlanges de viscose ou de certains types de cupro, modal ou lyocell et de fibres de coton (mthode lacide formique et au chlorure de zinc) (ISO 1833-6:2007) Textilien - Quantitative
7、chemische Analysen - Teil 6: Mischungen aus Viskose oder bestimmten Cupro-, Modal- oder Lyocellfasern und Baumwollfasern (Ameisensure-/Zinkchlorid-Verfahren) (ISO 1833-6:2007) This European Standard was approved by CEN on 12 September 2010. CEN members are bound to comply with the CEN/CENELEC Intern
8、al 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 obtained on application to the CEN Management Centre or to any CEN membe
9、r. 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 Management Centre has the same status as the official versions. CEN member
10、s 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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, S
11、weden, 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 any form and by any means reserved worldwide for CEN national Member
12、s. Ref. No. EN ISO 1833-6:2010: EBS EN ISO 1833-6:2010EN ISO 1833-6:2010 (E) 3 Foreword The text of ISO 1833-6:2007 has been prepared by Technical Committee ISO/TC 38 “Textiles” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 1833-6:2010 by Technical Com
13、mittee 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 the latest by April 2011, and conflicting national standards shall be w
14、ithdrawn 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 such patent rights. According to the CEN/CENELEC Internal Regulation
15、s, 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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, N
16、etherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1833-6:2007 has been approved by CEN as a EN ISO 1833-6:2010 without any modification. BS EN ISO 1833-6:2010ISO 1833-6:2007(E) ISO 2007 All rights
17、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 ISO technical committees. Each member body interested in a subject f
18、or 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 Electrotechnical Commission (IEC) on
19、 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 adopted by the technical committees a
20、re 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 patent rights. ISO shall not be held
21、responsible for identifying any or all such patent rights. ISO 1833-6 was prepared by Technical Committee ISO/TC 38, Textiles. This method supersedes Clause 5 of ISO 1833:1977. ISO 1833 consists of the following parts, under the general title Textiles Quantitative chemical analysis: Part 1: General
22、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 viscose, cupro or modal and cotton fibres (method using sodium
23、 zincate) 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 7: Mixtures of polyamide and certain other fibres (method using formic acid) Part 8: Mixtures of acetate and triacetate fibres (method using acetone
24、) Part 9: Mixtures of acetate and triacetate fibres (method 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, cert
25、ain modacrylics, certain chlorofibres, certain elastanes and certain other fibres (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 aci
26、d) BS EN ISO 1833-6:2010ISO 1833-6:2007(E) iv ISO 2007 All rights reserved 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 (homopoly
27、mers of vinyl chloride) and certain other fibres (method using 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, acet
28、ates, triacetates and certain other fibres (method using cyclohexanone) The following parts are under preparation: Part 20: Mixtures of elastane and some other fibres (method using dimethylacetamide) Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax fibres (method u
29、sing formic acid and zinc chloride) 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 1833-6:2010INTERNATIONAL STANDARD ISO 1833-6:2007(E) ISO 2007 All rights res
30、erved 1Textiles Quantitative chemical analysis Part 6: Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method using formic acid and zinc chloride) 1 Scope This part of ISO 1833 specifies a method, using a mixture of formic acid and zinc chloride, to determine the
31、 percentage of cotton, after removal of non-fibrous matter, in textiles made of binary mixtures of viscose or some cupro, modal and lyocell fibres, with cotton. If a cupro or modal or lyocell fibre is found to be present, a preliminary test is carried out to see whether it is soluble in the reagent.
32、 The method is not applicable to mixtures in which the cotton has suffered extensive chemical degradation, nor when the viscose, cupro, modal or lyocell fibre is rendered incompletely soluble by the presence of certain permanent finishes or reactive dyes that cannot be removed completely. WARNING Th
33、is part of ISO 1833 calls for the use of substances/procedures that may be injurious to the health/environment if appropriate conditions are not observed. It refers only to technical suitability and does not absolve the user from legal obligations relating to health and safety/environment at any sta
34、ge. 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 (including any amendments) applies. ISO 1833-1, Textiles Q
35、uantitative chemical analysis Part 1: General principles of testing 3 Principle The viscose, cupro, modal or lyocell fibre is dissolved out from a known dry mass of the mixture, with a reagent composed of formic acid and zinc chloride. The residue is collected, washed, dried and weighed; its correct
36、ed mass is expressed as a percentage of the dry mass of the mixture. The percentage of viscose, cupro, modal or lyocell fibre is found by difference. BS EN ISO 1833-6:2010ISO 1833-6:2007(E) 2 ISO 2007 All rights reserved4 Reagents Use the reagents described in ISO 1833-1, together with those specifi
37、ed in 4.1 and 4.2. 4.1 Formic acid/zinc chloride reagent. Prepare a solution containing 20 g of anhydrous zinc chloride (minimum assay to be 98 %) and 68 g of anhydrous formic acid, made up to 100 g with water. The harmful effects of this reagent should be borne in mind, and full precautions should
38、be taken in its use. 4.2 Ammonia, dilute solution. Dilute 20 ml of concentrated ammonia solution ( 0,880 g/ml) to 1 I with water. 5 Apparatus Use the apparatus described in ISO 1833-1, together with those described in 5.1 and 5.2. 5.1 Conical flask, minimum capacity 200 ml, glass-stoppered. 5.2 Heat
39、ing apparatus, suitable for maintaining the temperature of the flask at (40 2) C or (70 2) C. 6 Test procedure Follow the general procedure described in ISO 1833-1, and then proceed as follows. Place the specimen without delay in the conical flask preheated to 40 C. Add 100 ml of formic acid/zinc ch
40、loride reagent per gram of specimen, preheated to 40 C. Stopper the flask and shake it. Allow the flask and contents to remain at 40 C for 2 h 30 min, shaking it twice during this time at intervals of about 45 min. In case of difficulties dissolving some man-made fibres at 40 C, apply the same proce
41、dure but at 70 C for 20 min. Filter the contents of the flask through the weighed filter crucible and wash any fibres from the flask into the crucible with the reagent. Rinse with a further 20 ml of reagent, preheated to 40 C. Wash the crucible and residue thoroughly with water at 40 C (or at 70 C w
42、hen applicable). Rinse the residue with 100 ml of cold ammonia solution, ensuring that the residue remains totally immersed in the solution for 10 min, then rinse with cold water. Do not apply suction until each washing liquor has drained under gravity. Finally, drain the crucible using suction, dry
43、 the crucible and residue, and 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 1,02 for all types of cotton, except when the temperature of 70 C is applied; then d is 1,03. BS EN ISO 1833-6:2
44、010ISO 1833-6:2007(E) ISO 2007 All rights reserved 38 Precision On a homogeneous mixture of textile materials, the confidence limits of the results obtained by this method are not greater than 2 for the confidence level of 95 %. This page deliberately left blankThis page deliberately left blankBSI i
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