1、Designation:D540015(Reapproved 2021)Standard Test Methods forHydroxypropylcellulose1This standard is issued under the fixed designation D5400;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 paren
2、theses 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 hydroxypropy-lcellulose.1.2 The test procedures appear in the following order:SectionsMoisture4 9Viscosity10 16pH1
3、7 21Residue on Ignition22 28Hydroxypropoxy Content29 361.3 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 theresponsib
4、ility 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.For specific hazard statements,see 26.6.1.5 This international standard was developed in accor-dance with internationally rec
5、ognized 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:2D3876 Test Method for M
6、ethoxyl and Hydroxypropyl Sub-stitution in Cellulose Ether Products by Gas Chromatog-raphyE70 Test Method for pH of Aqueous Solutions With theGlass Electrode3.Reagents3.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents sh
7、all conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical Society,where such specifications are available.3Other grades may beused,provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy
8、 of the determination.3.2 Purity of WaterUnless otherwise indicated,referencesto water shall be understood to mean distilled water.MOISTURE4.Scope4.1 This test method covers the determination of the volatilecontent of hydroxypropylcellulose.5.Significance and Use5.1 The results of this test are used
9、 for calculating the totalsolids in the sample;and,by common usage,all materialsvolatile at this test temperature are designated as moisture.5.2 Moisture analysis(along with residue on ignition)is ameasure of the amount of active polymer in the material andmust be considered when determining the amo
10、unt of hydroxy-propylcellulose to use in various formulations.6.Apparatus6.1 Oven,gravity convection,capable of maintaining atemperature of 105 6 3C.6.2 Weighing Dish,glass or aluminum,with cover,50 mmin diameter,25 mm in height,or equivalent.6.3 Analytical Balance.7.Procedure7.1 Weigh about 5 g of
11、sample to the nearest 0.001 g in atared and covered weighing dish.1These test methods are under the jurisdiction 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 editio
12、n approved June 1,2021.Published June 2021.Originallyapproved in 1993.Last previous edition approved in 2015 as D5400 15.DOI:10.1520/D5400-15R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volu
13、me information,refer to the standards Document Summary page onthe ASTM website.3ACS Reagent Chemicals,Specifications 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 Chemica
14、lSociety,see Analar Standards for Laboratory Chemicals,BDH Ltd.,Poole,Dorset,U.K.,and the United States Pharmacopeia 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 Stat
15、esThis 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 Trad
16、e(TBT)Committee.17.2 Place it in an oven at 105 6 1C for 3 h with the coverremoved.7.3 Remove the dish from the oven,immediately replace thecover,cool in a desiccator,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.8.2 Report the moisture content to the nearest 0.1%.9.Precision and Bias9.1 PrecisionStatistical analysis of intralaboratory testresults on samples containing from 1 to 6%moisture indicatesa precisi
