ASTM D611-12(2016)

Standard Test Methods for Aniline Point and Mixed Aniline Point of Petroleum Products and Hydrocarbon Solvents

SIGNIFICANCE AND USE
5.1 The aniline point (or mixed aniline point) is useful as an aid in the characterization of pure hydrocarbons and in the analysis of hydrocarbon mixtures. Aromatic hydrocarbons exhibit the lowest, and paraffins the highest values. Cycloparaffins and olefins exhibit values that lie between those for paraffins and aromatics. In homologous series the aniline points increase with increasing molecular weight. Although it occasionally is used in combination with other physical properties in correlative methods for hydrocarbon analysis, the aniline point is most often used to provide an estimate of the aromatic hydrocarbon content of mixtures.
SCOPE
1.1 These test methods cover the determination of the aniline point of petroleum products and hydrocarbon solvents. Test Method A is suitable for transparent samples with an initial boiling point above room temperature and where the aniline point is below the bubble point and above the solidification point of the aniline-sample mixture. Test Method B, a thin-film method, is suitable for samples too dark for testing by Test Method A. Test Methods C and D are for samples that may vaporize appreciably at the aniline point. Test Method D is particularly suitable where only small quantities of sample are available. Test Method E describes a procedure using an automatic apparatus suitable for the range covered by Test Methods A and B.  
1.2 These test methods also cover the determination of the mixed aniline point of petroleum products and hydrocarbon solvents having aniline points below the temperature at which aniline will crystallize from the aniline-sample mixture.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 WARNING—Mercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in Section 7.

General Information

• Status: Historical
• Publication Date: 30-Sep-2016
• ICS: 71.080.01 - Organic chemicals in general
• ICS: 87.060.30 - Solvents
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.04.0D - Physical and Chemical Methods

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D611 − 12 (Reapproved 2016)
Designation: 2/98
Standard Test Methods for
Aniline Point and Mixed Aniline Point of Petroleum Products
1
and Hydrocarbon Solvents
This standard is issued under the fixed designation D611; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript 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. Scope and/or mercury containing products into your state or country
may be prohibited by law.
1.1 These test methods cover the determination of the
1.5 This standard does not purport to address all of the
aniline point of petroleum products and hydrocarbon solvents.
safety concerns, if any, associated with its use. It is the
Test Method A is suitable for transparent samples with an
responsibility of the user of this standard to establish appro-
initial boiling point above room temperature and where the
priate safety and health practices and determine the applica-
aniline point is below the bubble point and above the solidifi-
bility of regulatory limitations prior to use. Specific warning
cation point of the aniline-sample mixture. Test Method B, a
statements are given in Section 7.
thin-film method, is suitable for samples too dark for testing by
Test Method A. Test Methods C and D are for samples that may
2. Referenced Documents
vaporize appreciably at the aniline point. Test Method D is
2
2.1 ASTM Standards:
particularly suitable where only small quantities of sample are
D1500 Test Method for ASTM Color of Petroleum Products
available. Test Method E describes a procedure using an
(ASTM Color Scale)
automatic apparatus suitable for the range covered by Test
E1 Specification for ASTM Liquid-in-Glass Thermometers
Methods A and B.
1.2 These test methods also cover the determination of the 3. Terminology
mixed aniline point of petroleum products and hydrocarbon
3.1 Definitions:
solvents having aniline points below the temperature at which
3.1.1 aniline point, n—the minimum equilibrium solution
aniline will crystallize from the aniline-sample mixture.
temperature for equal volumes of aniline and sample.
1.3 The values stated in SI units are to be regarded as
3.1.2 mixed aniline point, n—the minimum equilibrium
standard. No other units of measurement are included in this
solution temperature of a mixture of two volumes of aniline,
standard.
one volume of sample, and one volume of n-heptane of
specified purity.
1.4 WARNING—Mercury has been designated by many
regulatory agencies as a hazardous material that can cause
4. Summary of Test Method
central nervous system, kidney and liver damage. Mercury, or
4.1 Specified volumes of aniline and sample, or aniline and
its vapor, may be hazardous to health and corrosive to
sample plus n-heptane, are placed in a tube and mixed
materials. Caution should be taken when handling mercury and
mechanically. The mixture is heated at a controlled rate until
mercury containing products. See the applicable product Ma-
the two phases become miscible. The mixture is then cooled at
terial Safety Data Sheet (MSDS) for details and EPA’s
a controlled rate and the temperature at which two phases
website—http://www.epa.gov/mercury/faq.htm—for addi-
separate is recorded as the aniline point or mixed aniline point.
tional information. Users should be aware that selling mercury
5. Significance and Use
5.1 The aniline point (or mixed aniline point) is useful as an
1
These test methods are under the jurisdiction of ASTM Committee D02 on
aid in the characterization of pure hydrocarbons and in the
Petroleum Products, Liquid Fuels, and Lubricants and are the direct responsibility
of D02.04.0D on Physical and Chemical Methods.
2
Current edition approved Oct. 1, 2016. Published November 2016. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 1941. Last previous edition approved in 2012 as D611 – 12. DOI: contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
10.1520/D0611-12R16. Standards volume information, refer to the standard’s Document Summary page on
These test methods were adopted as a joint ASTM-IP standard in 1964. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D611 − 12 (2016)
analysis of hydrocarbon mixtures. Aromatic hydrocarbons aniline shall be sufficiently pure such that when tested with
exhibit the lowest, and paraffins the highest values. Cyclopar- n-heptane according to Section 9, it shall give an anilin
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D611 − 12 D611 − 12 (Reapproved 2016)
Designation: 2/98
Standard Test Methods for
Aniline Point and Mixed Aniline Point of Petroleum Products
1
and Hydrocarbon Solvents
This standard is issued under the fixed designation D611; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript 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. Scope*Scope
1.1 These test methods cover the determination of the aniline point of petroleum products and hydrocarbon solvents. Test
Method A is suitable for transparent samples with an initial boiling point above room temperature and where the aniline point is
below the bubble point and above the solidification point of the aniline-sample mixture. Test Method B, a thin-film method, is
suitable for samples too dark for testing by Test Method A. Test Methods C and D are for samples that may vaporize appreciably
at the aniline point. Test Method D is particularly suitable where only small quantities of sample are available. Test Method E
describes a procedure using an automatic apparatus suitable for the range covered by Test Methods A and B.
1.2 These test methods also cover the determination of the mixed aniline point of petroleum products and hydrocarbon solvents
having aniline points below the temperature at which aniline will crystallize from the aniline-sample mixture.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 WARNING—Mercury has been designated by many regulatory agencies as a hazardous material that can cause central
nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution
should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet
(MSDS) for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware
that selling mercury and/or mercury containing products into your state or country may be prohibited by law.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use. Specific warning statements are given in Section 7.
2. Referenced Documents
2
2.1 ASTM Standards:
D1500 Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)
E1 Specification for ASTM Liquid-in-Glass Thermometers
3. Terminology
3.1 Definitions:
3.1.1 aniline point, n—the minimum equilibrium solution temperature for equal volumes of aniline and sample.
3.1.2 mixed aniline point, n—the minimum equilibrium solution temperature of a mixture of two volumes of aniline, one volume
of sample, and one volume of n-heptane of specified purity.
1
These test methods are under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and are the direct responsibility of
D02.04.0D on Physical and Chemical Methods.
Current edition approved Nov. 1, 2012Oct. 1, 2016. Published November 2012November 2016. Originally approved in 1941. Last previous edition approved in 20072012
as D611D611 – 12.–07. DOI: 10.1520/D0611-12.10.1520/D0611-12R16.
These test methods were adopted as a joint ASTM-IP standard in 1964.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D611 − 12 (2016)
4. Summary of Test Method
4.1 Specified volumes of aniline and sample, or aniline and sample plus n-heptane, are placed in a tube and mixed mechanically.
The mixture is heated at a controlled rate until the two phases become miscible. The mixture is then cooled at a controlled rate
and the temperature at which two phases separate is recorded as the aniline point or mixed anil
...