1、Designation:D532503(Reapproved 2021)Standard Test Method forDetermination of Weight Percent Volatile Content of Water-Borne Aerosol Paints1This standard is issued under the fixed designation D5325;the number immediately following the designation indicates the year oforiginal adoption or,in the case
2、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.1.Scope1.1 This test method is for the determination of the weightpercent volatile content of water-borne pain
3、ts in aerosols.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 est
4、ablish 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
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:2D2369 Test Method for Volatile Content of CoatingsD3792 Test Method for Water Content of Coatings by Dir
6、ectInjection Into a Gas ChromatographD4017 Test Method for Water in Paints and Paint Materialsby Karl Fischer MethodE180 Practice for Determining the Precision of ASTMMethods for Analysis and Testing of Industrial and Spe-cialty Chemicals(Withdrawn 2009)32.2 Other Standard:Method 36 Determination of
7、 Percent Volatile Organic Com-pounds(VOC)in Water Based Aerosol Paints43.Summary of Test Method3.1 The propellant is released from the can and the contentremaining is tested for percent water and nonvolatiles.4.Significance and Use4.1 Calculation of the weight percent volatile organic con-tent of wa
8、ter-borne paints,requires that the water content beknown.This test method provides a direct way to determine theweight percent volatile organic matter of water-borne aerosolpaints minus the matter content.This test method is modeledafter Method 36.45.Apparatus5.1 Freezer.5.2 Ice Pick.5.3 Hammer.5.4
9、Applicator Sticks.5.5 Masking Tape.5.6 Tin Snips or Metal Cutter.5.7 Shaker,similar to Eberbach shaker in Fig.1.6.Procedure6.1 Preparation of Aerosol Contents for Analysis:6.1.1 Mix the aerosol paint container thoroughly for about15 min,using a shaker similar to the Eberbach shaker shown inFig.1,at
10、the low speed setting.It is essential that the samplesbe well mixed to obtain valid results.6.1.2 Remove the cap and actuator from the can.Put the capon the can and weigh the can to 0.01 g.6.1.3 Place the can in an upside down position in a freezerfor 2 h at a temperature that is 0C.6.1.4 Put the ca
11、n upside down in a fume hood.Puncture thebottom of the can near the edge with a very sharp ice pick.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.21 on Chemical Analysis of
12、 Paints and Paint Materials.Current edition approved Feb.1,2021.Published February 2021.Originallyapproved in 1992.Last previous edition approved in 2014 as D5325 03(2014).DOI:10.1520/D5325-03R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at se
13、rviceastm.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.4Bay Area Air Quality Management District,(BAAQMD)Manual ofProcedures,Vol III,939 Elli
14、s St.,San Francisco,CA 94109.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
15、 theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1Slowly remove the ice pick from the hole.Leave the holeuncovered for about 12 to 16 h to allow most of the propellantto escape.6.1.5 Enlarge the hol
16、e slightly by tapping the ice pickfurther into the can.Swirl the can gently for 1 to 2 min toremove any remaining propellant.6.1.6 Wipe off any condensate that may have accumulatedon the can.Weigh the can to 60.01 g.6.1.7 Plug the hole with a small applicator stick(about12cm long)and then place masking tape over the plugged hole.6.1.8 Place the can on the shaker in a position so that thehole is at the highest possible position to prevent leakage ofcontents.Shake the can for about 15 min at the l
