ASTM D5191-06
(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
Designation:D5191–06
Standard Test Method for
1
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.
1. Scope* bility of regulatory limitations prior to use. For specific safety
warning statements, see 7.2 through 7.8.
1.1 This test method covers the use of automated vapor
pressure instruments to determine the total vapor pressure
2. Referenced Documents
exerted in vacuum by air-containing, volatile, liquid petroleum
2
2.1 ASTM Standards:
products. This test method is suitable for testing samples with
D 2892 Test Method for Distillation of Crude Petroleum
boiling points above 0°C (32°F) that exert a vapor pressure
(15-Theoretical Plate Column)
between 7 and 130 kPa (1.0 and 18.6 psi) at 37.8°C (100°F) at
D 4057 Practice for Manual Sampling of Petroleum and
avapor-to-liquidratioof4:1.Measurementsaremadeonliquid
Petroleum Products
sample sizes in the range from 1 to 10 mL. No account is made
D 4953 Test Method for Vapor Pressure of Gasoline and
for dissolved water in the sample.
Gasoline-Oxygenate Blends (Dry Method)
NOTE 1—Samples can also be tested at other vapor-to-liquid ratios,
D 6299 Practice for Applying Statistical Quality Assurance
temperatures,andpressures,buttheprecisionandbiasstatementsneednot
Techniques to Evaluate Analytical Measurement System
apply.
Performance
NOTE 2—The interlaboratory studies conducted in 1988, 1991, and
D 6377 TestMethodforDeterminationofVaporPressureof
2003 to determine the precision statements inTest Method D 5191 did not
Crude Oil: VPCR (Expansion Method)
include any crude oil in the sample sets. Test Method D 6377, as well as
x
IP 481, have been shown to be suitable for vapor pressure measurements D 6378 Test Method for Determination of Vapor Pressure
of crude oils.
(VP ) of Petroleum Products, Hydrocarbons, and
X
Hydrocarbon-Oxygenate Mixtures (Triple Expansion
1.1.1 Some gasoline-oxygenate blends may show a haze
Method)
when cooled to 0 to 1°C. If a haze is observed in 8.5, it shall
2.2 IP Standard:
be indicated in the reporting of results. The precision and bias
IP 481 Test Method for Determination of the Air Saturated
statements for hazy samples have not been determined (see
3
Vapour Pressure (ASVP) of Crude Oil
Note 14).
2.3 EPA Standard:
1.2 This test method is suitable for calculation of the dry
40CFRPart80AppendixE,Method3 TestforDetermining
vapor pressure equivalent (DVPE) of gasoline and gasoline-
Reid Vapor Pressure (RVP) of Gasoline and Gasoline
oxygenate blends by means of a correlation equation (see Eq 1
4
Oxygenate Blends—Evacuated Chamber Method
in 14.2). The calculated DVPE very closely approximates the
dryvaporpressurethatwouldbeobtainedonthesamematerial
3. Terminology
when tested by Test Method D 4953.
3.1 Definitions of Terms Specific to This Standard:
1.3 The values stated in SI units are regarded as standard.
3.1.1 absolute vapor pressure—the pressure of the air-free
The inch-pound units given in parentheses are provided for
sample. It is calculated from the total vapor pressure of the
information only.
sample by subtracting out the partial pressure of the dissolved
1.4 This standard does not purport to address all of the
air.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
2
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
1
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.
4
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
3.1.2 dry vapor pressure equivalent (DVPE)—a value cal- 6.1.2 The
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