1、Designation:D236415(Reapproved 2021)Standard Test Methods forHydroxyethylcellulose1This standard is issued under the fixed designation D2364;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 parent
2、heses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover the testing of hydroxyethyl-cellulose.1.2 The test procedures appear in the following order:SectionsMoisture4 9Ash10 17Viscosity18
3、 23Density24 301.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.4 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 es
4、tablish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles
5、 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:2D1193 Specification for Reagent WaterD4794 Test Method for Determination of Ethoxyl or Hy-droxyethoxyl
6、Substitution in Cellulose Ether Products byGas Chromatography3.Purity of Reagents3.1 Reagent grade chemicals shall be used in all tests.Unless otherwise indicated,it is intended that all reagents shallconform to the specifications of the Committee on AnalyticalReagents of the American Chemical Socie
7、ty,3where suchspecifications are available.Other grades may be used,pro-vided it is first ascertained that the reagent is of sufficientlyhigh purity to permit its use without lessening the accuracy ofthe determination.3.2 Unless otherwise indicated,reference to water shall beunderstood to mean reage
8、nt water,conforming to SpecificationD1193.MOISTURE4.Scope4.1 This test method covers the determination of the volatilecontent of hydroxyethylcellulose.5.Significance and Use5.1 The results of this test are used for calculating the totalsolids in the sample;and,by common usage,all materialsvolatile a
9、t this test temperature are designated as moisture.5.2 Moisture analysis(along with sulfated ash)is a measureof the amount of active polymer in the material and must beconsidered when determining the amount of hydroxyethylcellulose to use in various formulations.6.Apparatus6.1 Oven,gravity-convectio
10、n,capable of maintaining atemperature of 105 6 3C.6.2 Weighing Bottles,low-form,50 mm in inside diameterby 30 mm in height,or equivalent.6.3 Analytical Balance.7.Procedure7.1 Weigh 5 g of sample to the nearest 0.001 g in a tared andcovered weighing bottle.1These test methods are under the jurisdicti
11、on of ASTM Committee D01 onPaint and Related Coatings,Materials,and Applications and are the directresponsibility of Subcommittee D01.36 on Cellulose and Cellulose Derivatives.Current edition approved June 1,2021.Published June 2021.Originallyapproved in 1965.Last previous edition approved in 2015 a
12、s D2364 15.DOI:10.1520/D2364-15R21.2For 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.3ACS Reagent Chemicals,Specific
13、ations and Procedures for Reagents andStandard-Grade Reference Materials,American Chemical Society,Washington,DC.For suggestions on the testing of reagents not listed by the American ChemicalSociety,see Analar Standards for Laboratory Chemicals,BDH Ltd.,Poole,Dorset,U.K.,and the United States Pharma
14、copeia and National Formulary,U.S.Pharma-copeial Convention,Inc.(USPC),Rockville,MD.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 standa
15、rdization 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.17.2 Place it in an oven at 105C for 2 h with the coverremoved.Replace the cover,cool in a des
16、iccator,and weigh.8.Calculation8.1 Calculate the percent moisture,M,as follows:M 5A/B!3100(1)where:A=mass loss on heating,g,andB=sample used,g.9.Precision and Bias9.1 Statistical analysis of intralaboratory(repeatability)testresults on samples containing from about 3.5%moistureindicate a precision of 60.5%absolute at the 95%confidencelevel.9.2 No statement on bias can be made as no suitablereference material is available as a standard.ASHAS SULFATE10.Scope10.1 This test method covers the determi
