1、Designation:D52415(Reapproved 2019)Designation:14/94Standard Test Method forRamsbottom Carbon Residue of Petroleum Products1This standard is issued under the fixed designation D524;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the
2、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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the de
3、termination of the amountof carbon residue(Note 1)left after evaporation and pyrolysisof an oil,and it is intended to provide some indication ofrelative coke-forming propensity.This test method is generallyapplicable to relatively nonvolatile petroleum products whichpartially decompose on distillati
4、on at atmospheric pressure.This test method also covers the determination of carbonresidue on 10%(V/V)distillation residues(see Section 10).Petroleum products containing ash-forming constituents asdetermined by Test Method D482,will have an erroneouslyhigh carbon residue,depending upon the amount of
5、 ash formed(Notes 2 and 3).NOTE1The term carbon residue is used throughout this test methodto designate the carbonaceous residue formed during evaporation andpyrolysis of a petroleum product.The residue is not composed entirely ofcarbon,but is a coke which can be further changed by pyrolysis.The ter
6、mcarbon residue is continued in this test method only in deference to itswide common usage.NOTE2Values obtained by this test method are not numerically thesame as those obtained by Test Method D189,or Test Method D4530.Approximate correlations have been derived(see Fig.X2.1)but need notapply to all
7、materials which can be tested because the carbon residue testis applicable to a wide variety of petroleum products.The RamsbottomCarbon Residue test method is limited to those samples that are mobilebelow 90 C.NOTE3In diesel fuel,the presence of alkyl nitrates such as amylnitrate,hexyl nitrate,or oc
8、tyl nitrate,causes a higher carbon residue valuethan observed in untreated fuel,which can lead to erroneous conclusionsas to the coke-forming propensity of the fuel.The presence of alkyl nitratein the fuel can be detected by Test Method D4046.NOTE4The test procedure in Section 10 is being modified t
9、o allowthe use of a 100 mLvolume automated distillation apparatus.No precisiondata is available for the procedure at this time,but a round robin is beingplanned to develop precision data.The 250 mL volume bulb distillationmethod described in Section 10 for determining carbon residue on a 10%distilla
10、tion residue is considered the referee test.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 WARNINGMercury has been designated by manyregulatory agencies as a hazardous substance that can causeserious medical issues.Mercu
11、ry,or its vapor,has been dem-onstrated to be hazardous to health and corrosive to materials.Use Caution when handling mercury and mercury-containingproducts.See the applicable product Safety Data Sheet(SDS)for additional information.The potential exists that sellingmercury or mercury-containing prod
12、ucts,or both,is prohibitedby local or national law.Users must determine legality of salesin their location.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,heal
13、th,and environmental practices and deter-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 Internati
14、onal Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D86 Test Method for Distillation of Petroleum Products andLiquid Fuels at Atmospheric PressureD189 Test Method for Conradson Carbon Res
15、idue of Petro-leum ProductsD482 Test Method for Ash from Petroleum ProductsD4046 Test Method for Alkyl Nitrate in Diesel Fuels bySpectrophotometry(Withdrawn 2019)31This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct resp
16、onsibility ofSubcommittee D02.06 on Analysis of Liquid Fuels and Lubricants.Current edition approved Dec.1,2019.Published December 2019.Originallyapproved in 1939.Last previous edition approved in 2015 as D524 15.In the IP,this test method is under the jurisdiction of the StandardizationCommittee.DOI:10.1520/D0524-15R19.2For 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
