ASTM D5191-06e1
(Test Method)Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method)
Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method)
SCOPE
1.1 This test method covers the use of automated vapor pressure instruments to determine the total vapor pressure exerted in vacuum by air-containing, volatile, liquid petroleum products. This test method is suitable for testing samples with boiling points above 0C (32F) that exert a vapor pressure between 7 and 130 kPa (1.0 and 18.6 psi) at 37.8°C (100°F) at a vapor-to-liquid ratio of 4:1. Measurements are made on liquid sample sizes in the range from 1 to 10 mL. No account is made for dissolved water in the sample. Note 1Samples can also be tested at other vapor-to-liquid ratios, temperatures, and pressures, but the precision and bias statements need not apply.Note 2
The interlaboratory studies conducted in 1988, 1991, and 2003 to determine the precision statements in Test Method D 5191 did not include any crude oil in the sample sets. Test Method D 6377, as well as IP 481, have been shown to be suitable for vapor pressure measurements of crude oils.
1.1.1 Some gasoline-oxygenate blends may show a haze when cooled to 0 to 1°C. If a haze is observed in 8.5, it shall be indicated in the reporting of results. The precision and bias statements for hazy samples have not been determined (see Note 14).
1.2 This test method is suitable for calculation of the dry vapor pressure equivalent (DVPE) of gasoline and gasoline-oxygenate blends by means of a correlation equation (see Eqn. 1 in ). The calculated DVPE very closely approximates the dry vapor pressure that would be obtained on the same material when tested by Test Method D 4953.
1.3 The values stated in SI units are regarded as standard. The inch-pound units given in parentheses are provided for information only.
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. For specific safety warning statements, see 7.2 through 7.8.
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An American National Standard
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Designation:D5191–06
Standard Test Method for
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Vapor Pressure of Petroleum Products (Mini Method)
This standard is issued under the fixed designation D 5191; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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e NOTE—Replaced Figs. 1 and 2 images editorially in July 2006.
1. Scope* responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1.1 This test method covers the use of automated vapor
bility of regulatory limitations prior to use. For specific safety
pressure instruments to determine the total vapor pressure
warning statements, see 7.2 through 7.8.
exerted in vacuum by air-containing, volatile, liquid petroleum
products. This test method is suitable for testing samples with
2. Referenced Documents
boiling points above 0°C (32°F) that exert a vapor pressure
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2.1 ASTM Standards:
between 7 and 130 kPa (1.0 and 18.6 psi) at 37.8°C (100°F) at
D 2892 Test Method for Distillation of Crude Petroleum
avapor-to-liquidratioof4:1.Measurementsaremadeonliquid
(15-Theoretical Plate Column)
sample sizes in the range from 1 to 10 mL. No account is made
D 4057 Practice for Manual Sampling of Petroleum and
for dissolved water in the sample.
Petroleum Products
NOTE 1—Samples can also be tested at other vapor-to-liquid ratios,
D 4953 Test Method for Vapor Pressure of Gasoline and
temperatures,andpressures,buttheprecisionandbiasstatementsneednot
Gasoline-Oxygenate Blends (Dry Method)
apply.
D 6299 Practice for Applying Statistical Quality Assurance
NOTE 2—The interlaboratory studies conducted in 1988, 1991, and
Techniques to Evaluate Analytical Measurement System
2003 to determine the precision statements inTest Method D 5191 did not
Performance
include any crude oil in the sample sets. Test Method D 6377, as well as
IP 481, have been shown to be suitable for vapor pressure measurements D 6377 TestMethodforDeterminationofVaporPressureof
of crude oils.
Crude Oil: VPCR (Expansion Method)
x
D 6378 Test Method for Determination of Vapor Pressure
1.1.1 Some gasoline-oxygenate blends may show a haze
(VP ) of Petroleum Products, Hydrocarbons, and
when cooled to 0 to 1°C. If a haze is observed in 8.5, it shall
X
Hydrocarbon-Oxygenate Mixtures (Triple Expansion
be indicated in the reporting of results. The precision and bias
Method)
statements for hazy samples have not been determined (see
2.2 IP Standard:
Note 14).
IP 481 Test Method for Determination of the Air Saturated
1.2 This test method is suitable for calculation of the dry
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Vapour Pressure (ASVP) of Crude Oil
vapor pressure equivalent (DVPE) of gasoline and gasoline-
2.3 EPA Standard:
oxygenate blends by means of a correlation equation (see Eq 1
40CFRPart80AppendixE,Method3 TestforDetermining
in 14.2). The calculated DVPE very closely approximates the
Reid Vapor Pressure (RVP) of Gasoline and Gasoline
dryvaporpressurethatwouldbeobtainedonthesamematerial
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Oxygenate Blends—Evacuated Chamber Method
when tested by Test Method D 4953.
1.3 The values stated in SI units are regarded as standard.
3. Terminology
The inch-pound units given in parentheses are provided for
3.1 Definitions of Terms Specific to This Standard:
information only.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
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This test method is under the jurisdiction of ASTM Committee D02 on the ASTM website.
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Petroleum Products and Lubricants and is the direct responsibility of Subcommittee AvailablefromtheEnergyInstitute,61NewCavendishSt.,London,WIG7AR,
D02.08 on Volatility. U.K.
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Current edition approved May 1, 2006. Published June 2006. Originally Available from the EPA Web site at http://www.epa.gov/docs/epacfr40/chapt-
approved in 1991. Last previous edition approved in 2004 as D 5191–04a. I-info/
*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.
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D5191–06
generating the precision and bias statements were constructed of stainless
3.1.1 absolute vapor pressure—the pressure of the air-free
steel, aluminum, or brass.
sample. It is calculated
...
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