1、Designation:D754514Standard 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
2、,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.Scope*1.1 This laboratory test method covers a quantitative deter-mination of the stability of middle distillate fuels
3、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
4、.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 stabi
5、lity 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 thi
6、s standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D396 Specification for Fuel OilsD975 Specification for Diesel Fuel OilsD4057 Practice for Manual Sampling of Petroleum an
7、dPetroleum 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 Produ
8、ctsMiddleDistillates 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 B
9、lendsDetermination 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
10、which is10%below the maximum pressure of the actual test run.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 wit
11、h oxygen to 700 kPa at ambienttemperature.The test is initiated by starting the heater andheating the pressure vessel to a temperature of 140C.4.2 The pressure is recorded continuously until the break-point is reached.Alternatively,the test may be terminated whena minimum specification requirement i
12、s reached.5.Significance and Use5.1 The induction period may be used as an indication of theoxidation and storage stability of middle distillate fuel.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility of
13、Subcommittee D02.14 on Stability and Cleanliness of Liquid Fuels.Current edition approved Jan.1,2014.Published January 2014.Originallyapproved in 2009.Last previous edition approved in 2013 as D7545 13.DOI:10.1520/D7545-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact
14、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 Internatio
15、nal Organization for Standardization(ISO),1,ch.dela Voie-Creuse,CP 56,CH-1211 Geneva 20,Switzerland,http:/www.iso.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.2 Com
16、pared to some other oxidation and storage stabilitytest methods,this method uses a small sample and gives aresult in a short time period.6.Apparatus6.1 GeneralThis test method uses an automatically con-trolled oxidation tester5(see Fig.1)comprising an oxidationpressure vessel containing a test sample cup capable of beingrapidly heated,fitted with a pressure sensor capable of mea-suring pressures up to 2000 kPa and a temperature sensorcapable of reading to 0.1C.6.1.1 Pressure and temperature in t
