ASTM D5191-04a
(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 0°C (32°F) 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 1—Samples can also be tested at other vapor-to-liquid ratios, temperatures, and pressures, but the precision and bias statements need not apply.
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 10).
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 13.2). 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.
1.4 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 warning statements, see 7.2 through 7.7.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
AnAmerican National Standard
Designation:D5191–04a
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.
Note—Paragraph 10.1.1 and the Summary of Changes were updated editorially and the year date changed on Oct. 4, 2004.
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
pressure instruments to determine the total vapor pressure
warning statements, see 7.2 through 7.7.
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
2
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 5190 Test Method for Vapor Pressure of Petroleum Prod-
NOTE 2—The interlaboratory studies conducted in 1988 and 1991 to
ucts (Automatic Method)
determine the precision statements inTest Method D 5191 did not include
D 6377 TestMethodforDeterminationofVaporPressureof
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
Crude Oil: VPCR (Expansion Method)
x
oils.
2.2 IP Standards:
IP 481 Test Method for Determination of the Air Saturated
1.1.1 Some gasoline-oxygenate blends may show a haze
3
Vapour Pressure (ASVO) of Crude Oil
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
3. Terminology
statements for hazy samples have not been determined (see
3.1 Definitions of Terms Specific to This Standard:
Note 11).
3.1.1 absolute pressure—thepressureoftheair-freesample.
1.2 This test method is suitable for calculation of the dry
It is calculated from the total pressure of the sample by
vapor pressure equivalent (DVPE) of gasoline and gasoline-
subtracting out the partial pressure of the dissolved air.
oxygenate blends by means of a correlation equation (see
3.1.2 dry vapor pressure equivalent (DVPE)—a value cal-
13.2). The calculated DVPE very closely approximates the dry
culated by a correlation equation (see 13.2) from the total
vapor pressure that would be obtained on the same material
pressure.
when tested by Test Method D 4953.
3.1.2.1 Discussion—TheDVPEisexpectedtobeequivalent
1.3 The values stated in SI units are regarded as standard.
to the value obtained on the sample by Test Method D 4953,
The inch-pound units given in parentheses are provided for
Procedure A.
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
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This test method is under the jurisdiction of ASTM Committee D02 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
D02.08 on Volatility. the ASTM website.
3
Current edition approved Oct. 4, 2004. Published October 2004. Originally AvailablefromtheEnergyInstitute,61NewCavendishSt.,London,WIG7AR,
approved in 1991. Last previous edition approved in 2004 as D 5191–04. U.K.
*A Summary of Changes section appears at the end of this standard.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D5191–04a
3.1.3 total pressure—the observed pressure measured in the temperature range of the measuring device shall be from
experiment that is the sum of the partial pressure of the sam
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.