ASTM D5190-01

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An American National Standard
Designation: D 5190 – 01
Standard Test Method for
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Vapor Pressure of Petroleum Products (Automatic Method)
This standard is issued under the fixed designation D5190; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope* D5191 Test Method forVapor Pressure of Petroleum Prod-
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ucts (Mini Method)
1.1 This test method covers the determination of the total
2.2 ASTM Adjuncts:
pressure of air-containing, volatile, petroleum products. This
Detailed Drawings for Automatic Vapor Pressure Instru-
test method is suitable for testing samples with boiling points
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ment
above 0°C (32°F) that exert a vapor pressure between 7 and
172 kPa (1 and 25 psi) at 37.8°C (100°F) at a vapor-to-liquid
3. Terminology
ratio of 4:1. This test method is suitable for testing gasoline
3.1 Definitions of Terms Specific to This Standard:
samples that contain oxygenates. No account is made of
3.1.1 total pressure, n—the observed pressure measured in
dissolved water in the sample.
the experiment, that is, the sum of the partial pressure of the
1.1.1 Some gasoline-oxygenate blends may show a haze
sample and the partial pressure of the dissolved air.
when cooled to 0 to 1°C. If a haze is observed in 8.5, it shall
3.1.2 dry vapor pressure equivalent (DVPE), n—a value
be indicated in the reporting of results. The precision and bias
calculated by a correlation equation (see 13.1) from the total
statements for hazy samples have not been determined (see
pressure.
Note 8).
3.1.2.1 Discussion—TheDVPEisexpectedtobeequivalent
1.2 This test method is suitable for the calculation of a dry
to the value obtained on the sample by Test Method D4953,
vapor pressure equivalent (DVPE) by means of a correlation
Procedure A.
equation (see 13.1). The calculated DVPE very closely ap-
proximates the dry vapor pressure that would be obtained on
4. Summary of Test Method
thesamematerialwhentestedinaccordancewithTestMethod
4.1 The chilled sample cup of the automatic vapor pressure
D4953.
instrument is filled with chilled sample and is coupled to the
1.3 The values stated in SI units are to be regarded as the
instrument inlet fitting. The sample is then automatically
standard. The inch-pound units given in parentheses are
forced from the sample chamber to the expansion chamber
provided for information only.
where it is held until thermal equilibrium at 37.8°C (100°F) is
1.4 This standard does not purport to address all of the
reached.Inthisprocessthesampleisexpandedtofivetimesits
safety concerns, if any, associated with its use. It is the
volume (4:1 vapor-to-liquid ratio). The vapor pressure is
responsibility of the user of this standard to establish appro-
measured by a pressure transducer.
priate safety and health practices and determine the applica-
4.2 Themeasuredvaporpressureisautomaticallyconverted
bility of regulatory limitations prior to use. For specific hazard
to a DVPE value by the instrument.Acorrection to this value
statements, see 7.3 through 7.5 and 9.2.
is necessary to account for the observed bias between the test
result and that obtained by Test Method D4953.
2. Referenced Documents
2.1 ASTM Standards:
5. Significance and Use
D4057 Practice for Manual Sampling of Petroleum and
2 5.1 Vapor pressure is an important physical property of
Petroleum Products
volatile liquids.
D4953 Test Method for Vapor Pressure of Gasoline and
2 5.2 The vapor pressure of gasoline and gasoline-oxygenate
Gasoline-Oxygenate Blends (Dry Method)
blends is regulated by various government agencies.
5.3 Specifications for volatile petroleum products generally
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This test method is under the jurisdiction of ASTM Committee D02 on include vapor pressure limits to ensure products of suitable
PetroleumProductsandLubricantsandisthedirectresponsibilityofSubcommittee
volatility performance.
D02.08 on Volatility.
Current edition approved May 10, 2001. Published July 2001. Originally
published as D5190–91. Last previous edition D5190–99.
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Annual Book of ASTM Standards, Vol 05.02. Available from ASTM Headquarters. Order PCN 12-500140–12.
*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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D5190–01
5.4 This test method is more precise than Test Method 8.1.2 Obtainasampleandtestspecimeninaccordancewith
D4953. Practice D4057, except do not use “Sampling by Water
Displacement” for fuels containing oxygenates. Use a 1-L
6. Apparatus
(1-qt) size container filled between 70 and
...