ASTM_D_4530_-_15_2020.pdf

Designation:D453015(Reapproved 2020)Standard Test Method forDetermination of Carbon Residue(Micro Method)1This standard is issued under the fixed designation D4530;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the determination of the amountof carbon residue(see Note 1)formed after evaporation andpyrolysis of petroleum materials under certain conditions andis intended to provide some indication of the relative cokeforming tendency of such materials.1.2 The test results are equivalent to the Conradson CarbonResidue test(see Test Method D189).NOTE1This procedure is a modification of the original method andapparatus for carbon residue of petroleum materials,where it has beendemonstrated that thermogravimetry is another applicable technique.2However,it is the responsibility of the operator to establish operatingconditions to obtain equivalent results when using thermogravimetry.1.3 This test method is applicable to petroleum products thatpartially decompose on distillation at atmospheric pressure andwas tested for carbon residue values of 0.10%to 30%(m/m).Samples expected to be below 0.10 weight%(m m)residueshould be distilled to remove 90%(V/V)of the flask charge(see Section 9).The 10%bottoms remaining is then tested forcarbon residue by this test method.1.4 Ash-forming constituents,as defined by Test MethodD482,or non-volatile additives present in the sample will addto the carbon residue value and be included as part of the totalcarbon residue value reported.1.5 Also in diesel fuel,the presence of alkyl nitrates,such asamyl nitrate,hexyl nitrate,or octyl nitrate,causes a highercarbon residue value than observed in untreated fuel,whichmay lead to erroneous conclusions as to the coke-formingpropensity of the fuel.The presence of alkyl nitrate in the fuelmay be detected by Test Method D4046.1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6.1 Exception6.4 and 6.5 include inch-pound units.1.7 WARNINGMercury has been designated by manyregulatory agencies as a hazardous substance that can causeserious medical issues.Mercury,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 products,or both,is prohibitedby local or national law.Users must determine legality of salesin their location.1.8 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 todetermine the applicability of regulatory limitations prior touse.For specific warning statements,see 8.2.3 and 8.4.1.9 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:3D189 Test Method for Conradson Carbon Residue of Petro-leum ProductsD482 Test Method for Ash from Petroleum ProductsD4046 Test Method for Alkyl Nitrate in Diesel Fuels bySpectrophotometry(Withdrawn 2019)4D4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsE1 Specification for ASTM Liquid-in-Glass ThermometersE133 Specification for Distillation Equipment1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.06 on Analysis of Liquid Fuels and Lubricants.Current edition approved May 1,2020.Published June 2020.Originallyapproved in 1985.Last previous edition approved in 2015 as D4530 15.DOI:10.1520/D4530-15R20.2See Fuel,Vol 63,July 1984,pp.931934.3For 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.4The last approved version of this historical standard is referenced onwww.astm.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 StatesThis international standard was developed in accor