ASTM_D_7545_-_14_2019e1.pdf

Designation:D754514(Reapproved 2019)1Standard Test Method forOxidation Stability of Middle Distillate FuelsRapid SmallScale Oxidation Test(RSSOT)1This standard is issued under the fixed designation D7545;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.1NOTEEditorially updated Footnote 5 and Fig.1 in December 2019.1.Scope1.1 This laboratory test method covers a quantitative deter-mination of the stability of middle distillate fuels such as dieselfuels and heating oils,with up to 100%biodiesel,underaccelerated oxidation conditions,by an automatic instrument.NOTE1This test method is technically equivalent to test method EN160911.2 This test method is designed for products complyingwith Specification D975 on Diesel Fuel,Grades No.1D and2D;Specification D396 on Burner Fuel,Grades No.1 and No.2;Specification D6751 on Biodiesel,B100,and SpecificationD7467 on Diesel Fuel Oil,B6 to B20.1.3 This test method measures the induction period,underspecified conditions,which can be used as an indication of theoxidation and storage stability of middle distillate fuels.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 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 regulatory limitations prior to use.1.6 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,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D396 Specification for Fuel OilsD975 Specification for Diesel FuelD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD6751 Specification for Biodiesel Fuel Blend Stock(B100)for Middle Distillate FuelsD7467 Specification for Diesel Fuel Oil,Biodiesel Blend(B6 to B20)2.2 Other Standards:CEN/TR 16366:2012 Liquid Petroleum ProductsMiddleDistillates and FattyAcid Methyl Ester(FAME)Fuels andBlendsRound Robin Report on Applicability of RapidSmall Scale Oxidation Test Method3EN 590 Automotive FuelsDieselRequirements and TestMethods3EN 16091 Liquid Petroleum ProductsMiddle Distillatesand Fatty Acid Methyl Ester(FAME)Fuels and BlendsDetermination of Oxidation Stability by Rapid SmallScale Oxidation Method3ISO 4259 Petroleum ProductsDetermination and Applica-tion of Precision Data in Relation to Methods of Test43.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 break point,npressure in the test apparatus which is10%below the maximum pressure of the actual test run.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.14 on Stability,Cleanliness and Compatibility of Liquid Fuels.Current edition approved Dec.1,2019.Published December 2019.Originallyapproved in 2009.Last previous edition approved in 2014 as D7545 14.DOI:10.1520/D7545-14R19E01.2For 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 European Committee for Standardization(CEN),AvenueMarnix 17,B-1000,Brussels,Belgium,http:/www.cen.eu.4Available from International Organization for Standardization(ISO),1,ch.dela Voie-Creuse,CP 56,CH-1211 Geneva 20,Switzerland,http:/www.iso.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.3.1.2 induction period,ntime elapsed between starting theheating procedure of the sample vessel and the break point,measured in minutes.4.Summary of Test Method4.1 A 5 mL sample is introduced into a pressure vesselwhich is then charged with oxygen to 700 kPa at ambienttemperature.The test is initiated by starting the heater andheating the pressure vessel to a temperature of 140 C.4.2 The pressure is recorded continuously until the break-point is reached.Alternatively,the test may be terminated whena minimum specif