ASTM_D_2257_-_20.pdf

Designation:D225720Standard Test Method forExtractable Matter in Textiles1This standard is issued under the fixed designation D2257;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers a procedure for determining theextractable material on most fibers,yarns,and fabrics.Threeoptions are included.Option 1 uses heat and Soxhlet extractionapparatus.Option 2 uses room temperature and extractionfunnels.Option 3 uses either Option 1 or Option 2 extractionbut provides for calculation of extractable matter from the lossin mass of the material due to the extraction rather than theextractable matter residue.NOTE1Other standards for the determination of extractable matter intextiles made of specific fibers include:Specification D541,SpecificationD681,and Test Method D1574.1.1.1 The solvents for use in this method are any solventsthat the party or parties concerned agreed on;such as,HalogenatedHydrocarbon(HH)chloroform,tetrachloroethane,alcohol(isopropyl or methyl).1.1.2 This test method may not extract cross-linked finishesor resins which may be on the textile.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.See Sections 6 and 7.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD541 Specification for Single Jute Yarn(Withdrawn 1996)3D681 Specification for Jute Rove and Plied Yarn for Elec-trical and Packing Purposes(Withdrawn 2000)3D1574 Test Method for Extractable Matter in Wool andOther Animal FibersD1909 Standard Tables of Commercial Moisture Regainsand Commercial Allowances for Textile FibersD2258 Practice for Sampling Yarn for TestingD3333 Practice for Sampling Manufactured Staple Fibers,Sliver,or Tow for TestingD4920 Terminology Relating to Conditioning,Chemical,and Thermal Properties2.2 Other Documents:IWTO 10-62(E)Method for Determination of the Dichlo-romethane Soluble Matter in Combed Wool Sliver43.Terminology3.1 Definitions:3.1.1 extractable matter,nnonfibrous material in or on atextile not including water,which is removable by a specifiedsolvent or solvents as directed in a specified procedure.3.1.1.1 DiscussionNonfibrous material is usually oily,waxy,resinous,or polymeric in nature,but may also includeother material,such as protein,particularly if ethyl alcohol isused,or in,the extracting solvent.3.1.2 For definitions of other moisture terms related totextiles,refer to Terminology D4920.For definitions of othertextile terms used in this test method refer to TerminologyD123.1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.51 on Conditioning,Chemicaland Thermal Properties.Current edition approved July 1,2020.Published August 2020.Originallyapproved in 1989.Last previous edition approved in 2012 as D2257 98(2012).DOI:10.1520/D2257-20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from International Wool Secretariat,Carlton Gardens,London S.W.1,England.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.4.Summary of Test Method4.1 The specimen is extracted either in Soxhlet apparatus(Option 1),or extraction funnel(Option 2)first with an agreedsolvent(Note 2).The solvents are evaporated and the residuesand the specimens are dried and weighed separately.Theamounts of extracted matter are reported as percentages ofeither the oven-dried m