1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1833-22:2013Textiles Quantitativechemical analysisPart 22: Mixtures of viscose or certaintypes of cupro or modal or lyocell and flaxfibres (method using formic acid and
2、 zincchloride) (ISO 1833-22:2013)BS EN ISO 1833-22:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO1833-22:2013.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/80, Chemical testing of textiles.A list of organizations repre
3、sented 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. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 7
4、3548 6ICS 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 31 March 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROP
5、ENNE EUROPISCHE NORM EN ISO 1833-22 March 2013 ICS 59.060.01 English Version Textiles - Quantitative chemical analysis - Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax fibres (method using formic acid and zinc chloride) (ISO 1833-22:2013) Textiles - Analyse chimi
6、que quantitative - Partie 22: Mlanges de viscose ou de certains types de cupro, modal ou lyocell et de fibres de lin (mthode lacide formique et au chlorure de zinc) (ISO 1833-22:2013) Textilien - Quantitative chemische Analysen - Teil 22: Mischungen aus Viskose oder bestimmten Arten von Cupro-, Moda
7、l- oder Lyocellfasern und Flachsfasern (Ameisensure-/Zinkchlorid-Verfahren) (ISO 1833-22:2013)This European Standard was approved by CEN on 2 February 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the
8、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-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French
9、, 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-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, C
10、roatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey an
11、d United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 18
12、33-22:2013: EBS EN ISO 1833-22:2013EN ISO 1833-22:2013 (E) 3 Foreword This document (EN ISO 1833-22:2013) has been prepared by Technical Committee ISO/TC 38 “Textiles“ in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI. This E
13、uropean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2013, and conflicting national standards shall be withdrawn at the latest by September 2013. Attention is drawn to the possibility that some of
14、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 Regulations, the national standards organizations of the following countries are bound to implement
15、 this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slo
16、vakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 1833-22:2013 has been approved by CEN as EN ISO 1833-22:2013 without any modification. BS EN ISO 1833-22:2013ISO 1833-22:2013(E) ISO 2013 All rights reserved iiiContents PageForeword iv1 Sc
17、ope . 12 Normative references 13 Principle 14 Reagents and apparatus . 14.1 General . 14.2 Reagent 24.3 Apparatus 25 Test procedure 25.1 General . 25.2 Removal of the non-cellulosic components of the flax fibres . 25.3 Dissolution of viscose, cupro, modal or lyocell fibre 36 Calculation and expressi
18、on of results . 36.1 Calculation of loss in mass during pre-treatment 36.2 Calculation of dry mass of after-transfer mixture corrected to its initial dry mass before pre-treatment . 46.3 Calculation of dry masses of viscose or cupro or modal or lyocell and pretreated flax fibres 46.4 Calculation of
19、the percentages of each component with agreed percentage additions for moisture . 57 Precision . 5Annex A (informative) Proficiency results . 6Bibliography .10BS EN ISO 1833-22:2013ISO 1833-22:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of nation
20、al 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 for which a technical committee has been established has the right to be represented on that committee. Internatio
21、nal 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 all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules
22、 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 are circulated to the member bodies for voting. Publication as an International Standard requires approval by at lea
23、st 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 responsible for identifying any or all such patent rights.ISO 1833-22 was prepared by Technical Committee ISO/TC 38,
24、 Textiles.ISO 1833 consists of the following parts, under 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 an
25、d certain other fibres (method using hypochlorite) Part 5: Mixtures of viscose, cupro or modal and cotton fibres (method using sodium 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
26、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 alcohol) Part 10: Mixtures of triacetate or polylactide and certain other fibres (method using
27、 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 fibres (method using dimethylformamide) Part 13: Mixtures of certain chlorofibres and certain
28、 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 determining nitrogen content) Part 16: Mixtures of polypropylene fibres and certain other fibres (met
29、hod using xylene) Part 17: Mixtures of chlorofibres (homopolymers of vinyl chloride) and certain other fibres (method using sulfuric acid) Part 18: Mixtures of silk and wool or hair (method using sulfuric acid)iv ISO 2013 All rights reservedBS EN ISO 1833-22:2013ISO 1833-22:2013(E) Part 19: Mixtures
30、 of cellulose fibres and asbestos (method by heating) Part 20: Mixtures of elastane and certain other fibres (method using dimethylacetamide) Part 21: Mixtures of chlorofibres, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibres (method using cyclohexanone) Part 22
31、: Mixtures of viscose or certain types of cupro or modal or lyocell and flax fibres (method using formic acid and zinc chloride) Part 24: Mixtures of polyester and some other fibres (method using phenol and tetrachloroethane) Part 25: Mixtures of polyester and cotton or aramid fibres (method using t
32、richloracetic acid and chloroform) Part 26: Mixtures of melamine and cotton or aramide fibres (method using hot formic acid)The following part is cancelled: Part 23: Mixtures of polyethylene and polypropylene (method using cyclohexanone) ISO 2013 All rights reserved vBS EN ISO 1833-22:2013BS EN ISO
33、1833-22:2013Textiles Quantitative chemical analysis Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax fibres (method using formic acid and zinc chloride)WARNING This part of ISO 1833 calls for the use of substances/procedures that may be injurious to the health/envi
34、ronment 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 stage.1 ScopeThis part of ISO 1833 is applicable, after removal of non-fibrous matter, to binary mixtures
35、of viscose or certain types of the current cupro or modal or lyocell fibreswith flax fibres.If a cupro or modal fibre is found to be present, a preliminary test should be carried out to see whether it is soluble in the reagent.The part of ISO 1833 is not applicable to mixtures in which the flax fibr
36、e 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.2 Normative referencesThe following referenced documents are indispensa
37、ble 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 1833-1:2006, Textiles Quantitative chemical analysis Part 1: General principles of testing3 Pri
38、ncipleAfter the removal of the non-cellulosic components (pectin, etc.) related to the flax fibre internal structure by means of pre-treatment with sodium hydroxide, the viscose, cupro or modal or lyocell fibre is dissolved out from a known dry mass of the mixture, with a reagent composed of formic
39、acid and zinc chloride. The residue is collected, washed, dried and weighed; its corrected 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.4 Reagents and apparatus4.1 GeneralUse the reagents and the app
40、aratus described in ISO 1833-1, together with those specified in 4.2 and 4.3.INTERNATIONAL STANDARD ISO 1833-22:2013(E) ISO 2013 All rights reserved 1BS EN ISO 1833-22:2013ISO 1833-22:2013(E)4.2 Reagent4.2.1 Sodium hydroxide solution of 1,5 mol/l.4.2.2 Acetic acid solution of 0,1 mol/l.4.2.3 Formic
41、acid/zinc chloride reagent.Prepare a solution containing 20 g of anhydrous zinc chloride and 68 g of anhydrous formic acid, made up to 100 g with water.SAFETY PRECAUTIONS The harmful effects of this reagent shall be borne in mind, and full precautions shall be taken during use.4.2.4 Ammonia, dilute
42、solution.Dilute 20 ml of concentrated ammonia solution ( = 0,880 g/ml) to 1 I with water.4.3 Apparatus4.3.1 Flask with ground glass stopper, of minimum capacity 250 ml.4.3.2 Reflux condenser.4.3.3 Heating apparatus capable of maintaining the boiling of the content of the flask during the pre-treatme
43、nt.4.3.4 Conical flask, of minimum capacity 200 ml, glass-stoppered.4.3.5 Heating apparatus, capable of maintaining the temperature of the flask at (40 2) C.5 Test procedure5.1 GeneralFollow the general procedure described in ISO 1833-1, and then proceed as follows.5.2 Removal of the non-cellulosic
44、components of the flax fibresBased on the intensity of the flax retting and of the applied treatments, from 10 % to 40 % of non-cellulosic components (pectin, etc.) of the flax fibres shall be removed prior to the dissolution of viscose or cupro or modal or lyocell.Place at least 1 g of the specimen
45、 in a weighed filter crucible.Place and dry the weighed filter crucible and the specimen in an oven, then cool down and weigh.Allow the sodium hydroxide solution to boil for at least 15 min in the flask equipped with a reflux condenser. The bath ratio of the solution to the specimen shall be at 1/10
46、0.After removal of air from the solution (due to boiling), place the specimen in the flask and continue boiling for 1 h. Wet out constantly the specimen in the solution.Rinse the specimen by continuous siphoning with distilled or deionized water for 5 min.Immerse the specimen in the acetic acid solu
47、tion for 10 min.2 ISO 2013 All rights reservedBS EN ISO 1833-22:2013ISO 1833-22:2013(E)Filter the contents of the flask through the weighed filter crucible and wash any fibres from the flask into the crucible with 0,1 mol/l acetic acid solution.Drain the crucible with suction and wash with water unt
48、il neutralization is achieved. Do not apply suction until the washing liquor has drained under gravity.Finally, drain the crucible with suction, dry the crucible and residue, cool and weigh them.5.3 Dissolution of viscose, cupro, modal or lyocell fibrePlace the pre-treated specimen without delay in
49、the conical flask pre-heated to 40 C.Weigh again the filter crucible because of remaining loose fibres after the transfer.Determine the dry mass of the mixture before the dissolution test.Add 100 ml of formic acid/zinc chloride reagent per gram of specimen, pre-heated 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 60 min.Filter the contents of the flask through the weighed filter crucible and wash any
