ASTM_D_7236_-_07_2013.pdf

Designation:D723607(Reapproved 2013)Standard Test Method forFlash Point by Small Scale Closed Cup Tester(RampMethod)1,2This standard is issued under the fixed designation D7236;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.INTRODUCTIONThis flash point test method is a dynamic test method and depends on a definite rate of temperatureincrease to control the precision of the test method.The rate of heating may not in all cases give theprecision quoted in the test method because of the low thermal conductivity of certain materials.Theuse of an equilibrium method such as Test Methods D3828,Method B improves the prediction offlammability for such materials,as the vapors above the test specimen and the test specimen are closerto thermal equilibrium.Flash point values are a function of the apparatus design,the condition of the apparatus used,andthe operational procedure carried out.Flash point can therefore only be defined in terms of a standardtest method,and no general valid correlation can be guaranteed between results obtained by differenttest methods or with test apparatus different than that specified.1.Scope1.1 This test method covers the determination of the flashpoint of aviation turbine fuel,diesel fuel,kerosine and relatedproducts in the temperature range of 40 to 135C by a smallscale closed cup apparatus.1.2 This test method is only applicable to homogeneousmaterials that are liquid at or near ambient temperature and attemperatures required to perform the test.1.3 This test method is not applicable to liquids contami-nated by traces of highly volatile materials.1.4 This test method is a dynamic method and depends on adefinite rate of temperature increase.It is one of many flashpoint methods available,and every flash point test method,including this one,is an empirical one.1.5 If the users specification requires a defined flash pointmethod,neither this test nor any other method should besubstituted for the prescribed method without obtaining com-parative data and an agreement from the specifier.1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.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 and health practices and determine the applica-bility of regulatory limitations prior to use.For specific hazardstatements,see Section 7 and the Material Safety Data Sheetfor the product being tested.2.Referenced Documents2.1 ASTM Standards:3D3828 Test Methods for Flash Point by Small Scale ClosedCup TesterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD6299 Practice 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 andLubricants1This test method is 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 Oct.1,2013.Published October 2013.Originallyapproved in 2006.Last previous edition approved in 2007 as D7236 07.DOI:10.1520/D7236-07R13.2This test method is being jointly developed and harmonized with the EnergyInstitute.3For 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 States1 E300 Practice for Sampling Industrial Chemicals2.2 ISO Standards:4ISO Guide 34 Quality Systems Guidelines for the Produc-tion of Reference MaterialsISO Guide 35 Certification of Reference MaterialGeneraland Statistical Principles3.Terminology3.1 Definitions:3.1.1 flash point,nlowest temperature corrected to apressure of 101.3 kPa,at which application of a test flamecauses the vapors of a test specimen of the sample to ignitemomentarily under the specified conditions of the test.3.2 Definitions of Terms Specific to This Standard:3.2.1 dynamic,adjthe condition where the vapor abovethe test specimen,and the test cup,are not in temperatureequilibrium at the time the test flame is applied.3.2.2 ramp method,nin flash point methods,method thathas a test temperature increase at a set rate.4.Summary of Test Method4.1 A 2 6 0.1 mL test specimen is introduced into the testcup that is then heated automatically at a constant