ASTM_D_1488_-_00_2018.pdf

Designation:D148800(Reapproved 2018)Standard Test Method forAmylaceous Matter in Adhesives1This standard is issued under the fixed designation D1488;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 the determination of the pres-ence or absence of amylaceous(starch-like)material inphenol-,resorcinol-,and melamine-resin adhesives.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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.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:2D907 Terminology of Adhesives3.Terminology3.1 DefinitionsMany terms in this test method are definedin Terminology D907.4.Summary of Test Method4.1 A reagent solution is added to the adhesive in questionwhich causes any starch-like material to become insoluble.Theresultant material then changes color when another reagent isadded if any starch-like matter is present.5.Significance and Use5.1 This test method is used to determine if a melamineresin,a phenol,or a resorcinol adhesive contains any starch-like filler,the presence of which could affect water resistanceor strength,or both.6.Reagents6.1 Iodine Test SolutionAdd 5 g(0.18 oz)of iodine and 5g of potassium iodide to 100 mL(3 oz)of distilled water.6.2 Acetic AcidEthyl Alcohol SolutionAdd 20 parts ofglacial acetic acid and 20 parts of 95%ethyl alcohol to 60parts of distilled water by volume.7.Sampling7.1 Except in special cases,take a composite of the sampleof the adhesive when possible,from three or more separatecontainers,chosen at random.Also,take samples from con-tainers that appear to be nonrepresentative,and test suchsamples separately.Before a sample is taken,thoroughly mixthe contents of the container if there is a tendency for thematerials to separate.Place the samples immediately in airtightcontainers and transport to the testing laboratory in thesecontainers.Take precautions to reduce evaporation or drying toa minimum.8.Procedure8.1 Phenol and Resorcinol AdhesivesWeigh 0.5 g(0.018oz)of thoroughly mixed adhesive into a small-diameter testtube.Add 5 mL(0.15 oz)of 95%ethyl alcohol.Shakethoroughly,allow the insoluble matter to settle,and decant thesupernatant liquid.Repeat twice more with the ethyl alcoholand three times with distilled water.After the final decantation,add one drop of the iodine solution to the residue.A darkeningof the residue denotes a positive test for the presence ofamylaceous matter.8.2 Melamine ResinsUse the same procedure as specifiedin 8.1 except substitute an acetic acid-ethyl alcohol solution.When the melamine adhesive is supplied with separatehardener,use ethyl alcohol for the unmixed hardener.9.Report9.1 Report the following information:1This test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.30 on WoodAdhesivesCurrent edition approved Aug.1,2018.Published August 2018.Originallyapproved in 1957.Last previous edition approved in 2013 as D1488 00(2013).DOI:10.1520/D1488-00R18.2For 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.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.1 9.1.1 Complete identification of the adhesive tested,includ-ing type,source,manufacturers code number,lot or batchnumber,condition,and date,and9.1.2 Positive or negative reaction to the iodine test.10.Precision and Bias10.1 No information is presented about either the precisionor bias of Test Method D1488 for measuring the presence orabsence of amylaceous matter in adhesives since the re