Iso INTERNATIONAL 1833-5 STANDARD First edilior 2006-06-01 Textiles -- Quantitative chemical analysis . Part 5: Mixtures of viscose, cupro or modal and cotton fibres (method using sodium zincate) Textiles-Analyse chirmiguequanfitathve- Partie 5: Melanges de visoose, cupra ou modaf et de fibres de cofon (methodeau zincatede sadium) Refetence nutyter ISO 1833-5 200E) ISO1833-5:2006(E) Foreword 1so (the International Organization for Standardization) is a woridwide federation of national standards bodies establishedhastherighttoberepresentedonthatcommittee.Intemationalorganizations,goverrmentalan internatianal Electrotechnical Commission (lEC) on all matters of electrotechnical staridardization International Standards are drafted in accordance with the rules given in the 1sOlEc Dlrectives, Part 2. adopted bythe technical committees are circulatedtothememberbodiesfor voting.Publicatlon as Atention is dran to the possibility that some of the elements of this document may be the subject af pate rights. IsO shall not be held responsible for identifying any or all such patent rights. iSo 1833-5 was prepared by Technical Committee ISO/Tc 38, Textiles Iso1833:1977wil1becanceiled andreplacedby1s01833-1,1s01833-3,Iso1833-4.IsQ1833- ISO1833-6,IS01833-7,ISO1833-8,ISO1833-9,ISO1833-10,ISO1833-11,ISO1833-12,ISO1833- Is0 1833-14,ISO1833-15,Is0 1833-16,IS0 1833-17,1sO 1833-18 and ISO 1833-19. Iso 1833 consists of the following parts,under the general title TextiesQuantitative chemical analysis Part1.Generalprinciolesoftesting Part2:Ternary fibre mixtures Part 3: Mixtures of acetate and certain other fibres (method using acetone) Part 4 Mixturesofcertain proton andcertain otherfibres (methodusinghypochiorite) Part5·Mixturesofviscose,cuproormodarandcoftonfibras(methodusingsodiumzincate) Part7:Mixturasofpolyamideandcertam otherfibres(method usingformroacid) Part B: Mixtures of acotate and triacetate fibres (method using acetone) PartS.Mixturesofacetateandtriacetatofibresimethodusingbenzyfarcohof) Part to:Mixtures of triacetate orpolyiactide and certain otherfibres (method using dichloromethane) Part11:Mixturesofcelturoseand polyesterfibres (methodusing surffunic acro) Part12:Mixtures ofacrylic,certam modacylics,certan chlorofibres,certain elastanesand certain otffer fibres (methodusingdimethyiformamide) Partt3:Marxtures ofcertain chforofibros and certain othsrfibres (methodusingcarbon disulfidelaceton nlanlovanncaereansudsllin'ghtsreserved i INTERNATIONALSTANDARD IS01833-5:2006(E) TextilesQuantitativechemicalanaivsis- Part 5: Mixtures of viscose, cupro or modal and cotton fibres (method using sodium zincate) Scope This part of Iso i833 specifies a method, using sodium zincate, to deternine the percentage of viscos? cupro ar modal fibre, after removal of non-fibrous matter.in textites made of binary mixtures of viscose or most af the current cupro or modal fibres and raw, scoured, kiered or bleached cotton. Where a cupro ar modal fibre ts present, a prelininary test should be carried out to see whether it is solublett the reagent. The method is riot appficable to mixtures in which the cottan has suffered extensive chemical degradation, n finishes or reactive dyes that cannot be removed completely. Normativereferences The following referenced documents are indispensable for the application of this document. For dafed references, only the edition cited applies For undated referenices, the latest editlon of the referenddd document (including any amendments) applies. Iso1833-1,Textiles-Quartttativs chemicalanalysis-Part1: General prinoiples of testing 3Principle The viscose, cupro ar modal fibre is dissolved from a known dry mass of the mixture, wlth sadium zindate salution. The residue is coilected, washed, dried and weighed; its corrected mass is expressed a! percentage of the dry mass of the mixture. The percentage of viscose, cupro or modal fibre is founid by difference. ersantud sallen'ghte reserved 55091Cn IS0 1833-5:2006(E) Calculation and expre