1、Designation:D645016a(Reapproved 2021)Standard Test Method forFlash Point by Continuously Closed Cup(CCCFP)Tester1This standard is issued under the fixed designation D6450;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of la
2、st 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 flash point test method is a dynamic method anddepends on definite rates of temperature increase.It is one ofthe many fl
3、ash point test methods available,and every flashpoint test method,including this one,is an empirical method.NOTE1Flash point values are not a constant physical-chemicalproperty of materials tested.They are a function of the apparatus design,the condition of the apparatus used,and the operational pro
4、cedure carriedout.Flash point can therefore only be defined in terms of a standard testmethod,and no general valid correlation can be guaranteed betweenresults obtained by different test methods or with test apparatus differentfrom that specified.1.2 This test method covers the determination of the
5、flashpoint of fuel oils,lube oils,solvents,and other liquids by acontinuously closed cup tester.The measurement is made on atest specimen of 1 mL.1.3 This test method utilizes a closed but unsealed cup withair injected into the test chamber.1.4 This test method is suitable for testing samples with a
6、flash point from 10 C to 250 C.NOTE2Flash point determinations below 10 C and above 250 C canbe performed;however,the precision has not been determined below andabove these temperatures.1.5 If the users specification requires a defined flash pointmethod other than this test method,neither this test
7、method norany other method should be substituted for the prescribedmethod without obtaining comparative data and an agreementfrom the specifier.1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.Temperatures are in degrees Celsi
8、us,and pressure isin kilo-pascals.1.7 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 regula
9、tory limitations prior to use.Specific warning statements appear throughout the standard.1.8 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
10、,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD6299 Pr
11、actice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products,Liquid Fuels,and LubricantsE300 Practice for Sampling Industr
12、ial Chemicals2.2 ISO Standards:3ISO Guide 34 General requirements for the competence ofreference material producersISO Guide 35 Reference materialsGeneral and statisticalprinciples for certification3.Terminology3.1 Definitions:3.1.1 dynamic,adjthe condition in which the vapor abovethe test specimen
13、and the test specimen are not in temperatureequilibrium at the time at which the ignition source is applied.3.1.2 flash point,nin flash point test methods,the lowesttemperature of the test specimen,adjusted to account forvariations in atmospheric pressure from 101.3 kPa,at which1This test method is
14、under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.08 on Volatility.Current edition approved July 1,2021.Published July 2021.Originally approvedin 1999.Last previous edition approved in 2016 as D6450 16a.D
15、OI:10.1520/D6450-16AR21.2For 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.3Available from American National Standard
16、s Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.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
