1、Designation:D577221Designation:IP 445/09Standard Test Method forCloud Point of Petroleum Products and Liquid Fuels(LinearCooling Rate Method)1This standard is issued under the fixed designation D5772;the number immediately following the designation indicates the year oforiginal adoption or,in the ca
2、se 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 test method describes an alternative procedure for the determination of cloud point ofpetr
3、oleum products of Test Method D2500/IP 219 using an automatic apparatus.The temperatureresults from this test method have been found to be equivalent to Test Method D2500/IP 219.Whenspecification requires Test Method D2500/IP 219,do not substitute this test method or any othermethod without obtainin
4、g comparative data and agreement from the specifier.1.Scope*1.1 This test method covers the description of the determi-nation of the cloud point of petroleum products and biodieselfuels that are transparent in layers 40 mm in thickness by anautomatic instrument using a linear cooling rate.1.2 This t
5、est method covers the range of temperatures from60 C to 49 C with temperature resolution of 0.1 C,however,the range of temperatures included in the 1997interlaboratory cooperative test program only covered thetemperature range of 56 C to+34 C.1.3 The values stated in SI units are to be regarded asst
6、andard.No other units of measurement are included in thisstandard.1.4 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-
7、mine the applicability of regulatory limitations prior to use.1.5 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-mendation
8、s issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D2500 Test Method for Cloud Point of Petroleum Productsand Liquid FuelsD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Samplin
9、g of Petroleum andPetroleum ProductsD6751 Specification for Biodiesel Fuel Blend Stock(B100)for Middle Distillate Fuels2.2 Energy Institute Standard:IP 219 Test Method for Cloud Point of Petroleum Products33.Terminology3.1 Definitions:3.1.1 biodiesel,nfuel comprised of mono-alkyl esters oflong chain
10、 fatty acids derived from vegetable oils or animalfats,designated B100.3.1.1.1 DiscussionBiodiesel is typically produced by areaction of a vegetable oil or animal fat with an alcohol such asmethanol or ethanol in the presence of a catalyst to yieldmono-alkyl esters and glycerin,which is removed.The
11、finishedbiodiesel derives approximately 10%of its mass from thereacted alcohol.The alcohol used in the reaction may or maynot come from renewable resources.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibil
12、ity ofSubcommittee D02.07 on Flow Properties.Current edition approved Jan.1,2021.Published January 2021.Originallyapproved in 1995.Last previous edition approved in 2020 as D5772 20.DOI:10.1520/D5772-21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Servic
13、e at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Energy Institute,61 New Cavendish St.,London,WIG 7AR,U.K.,http:/www.energyinst.org.uk.*A Summary of Changes section appears at the end of this stan
14、dardCopyright 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 Intern
15、ational Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.1.2 biodiesel blend(BXX),na homogeneous mixture ofhydrocarbon oils and mono-alkyl esters of long chain fattyacids.3.1.2.1 DiscussionIn the abbreviation,BXX,the XX rep-rese
16、nts the volume percentage of biodiesel fuel in the blend.3.1.2.2 DiscussionThe mono-alkyl esters of long chainfatty acids(that is,biodiesel)used in the mixture shall meet therequirements of Specification D6751.3.1.2.3 DiscussionDiesel fuel,fuel oil,and non-aviationgas turbine oil are examples of hydrocarbon oils.3.1.3 biodiesel fuel,nsynonym for biodiesel.3.1.4 cloud point,nin petroleum products and biodieselfuels,the temperature of a liquid specimen when the smallestobservable cluster of wax cr
