ASTMD611-2004

Designation:D 611 -04An American Nafional StandardINTERNATIONALIPDesignation:2/98Standard Test Methods forAniline Point and Mixed Aniline Point of Petroleum Productsand Hydrocarbon Solvents1This standard is issued under the fixed designation D 611;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 Department of Defense.1.Scope*E 1 Specifi cation for ASTM Liquid-in-Glass Themometers1.1 These test methods cover the determination of the3.Terminologyaniline point of petroleum products and hydrocarbon solvents.Test Method A is suitable for transparent samples with an3.1 Defnitions:initial boiling point above room temperature and where the3.1.1 aniline point-the minimum equilibrium solutionaniline point is below the bubble point and above the solidif-temperature for equal volumes of aniline and sample.cation point of the aniline-sample mixture.Test Method B,a3.1.2 mixed aniline point-the minimum equilibrium solu-thin-fi lm method,is suitable for samples too dark for testing bytion temperature of a mixture of two volumes of aniline,oneTest Method A.Test Methods C and D are for samples that mayvolume of sample,and one volume of n-heptane of specifi edvaporize appreciably at the aniline point.Test Method D ispurity.particularly suitable where only small quantities of sample are4.Summary of Test Methodavailable.Test Method E describes a procedure using anautomatic apparatus suitable for the range covered by Test4.1 Specified volumes of aniline and sample,or aniline andMethods A and B.sample plus n-heptane,are placed in a tube and mixed1.2 These test methods also cover the determination of themechanically.The mixture is heated at a controlled rate untilmixed aniline point of petroleum products and hydrocarbonthe two phases become miscible.The mixture is then cooled atsolvents having aniline points below the temperature at whicha controlled rate and the temperature at which two phasesaniline will crystallize from the aniline-sample mixture.separate is recorded as the aniline point or mixed aniline point.1.3 This standard does not purport to address all of the5.Significance and Usesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-5.1 The aniline point (or mixed aniline point)is useful as anpriate safety and health practices and determine the applica-aid in the characterization of pure hydrocarbons and in thebility of regulatory limitations prior to use.Specif c warninganalysis of hydrocarbon mixtures.Aromatic hydrocarbonsstatements are given in Section 7.exhibit the lowest,and paraffins the highest values.Cyclopar-affins and olefi ns exhibit values that lie between those for2.Referenced Document