ASTM D525-12
(Test Method)Standard Test Method for Oxidation Stability of Gasoline (Induction Period Method)
Standard Test Method for Oxidation Stability of Gasoline (Induction Period Method)
SIGNIFICANCE AND USE
The induction period may be used as an indication of the tendency of motor gasoline to form gum in storage. It should be recognized, however, that its correlation with the formation of gum in storage may vary markedly under different storage conditions and with different gasolines.
SCOPE
1.1 This test method covers the determination of the stability of gasoline in finished form only, under accelerated oxidation conditions. (WarningThis test method is not intended for determining the stability of gasoline components, particularly those with a high percentage of low boiling unsaturated compounds, as these may cause explosive conditions within the apparatus. However, because of the unknown nature of certain samples, the pressure vessel assembly shall include a safety burst-disc in order to safeguard the operator.)
Note 1—For measurement of oxidation stability of gasoline by measurement of potential gum, refer to Test Method D873, or IP Test Method 138.
Note 2—The precision data were developed with gasolines derived from hydrocarbon sources only without oxygenates.
1.2 The accepted SI unit of pressure is the kilo Pascal (kPa), and of temperature is °C.
1.3 WARNINGMercury 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 websitehttp://www.epa.gov/mercury/faq.htmfor additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.
1.4 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.
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British Standard 4347
Designation:D525–12
Designation: 40/97
Standard Test Method for
1
Oxidation Stability of Gasoline (Induction Period Method)
This standard is issued under the fixed designation D525; 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 (ϵ) 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* priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 This test method covers the determination of the stabil-
ity of gasoline in finished form only, under accelerated oxida-
2. Referenced Documents
2
tion conditions. (Warning—This test method is not intended
3
2.1 ASTM Standards:
for determining the stability of gasoline components, particu-
D873 Test Method for Oxidation Stability ofAviation Fuels
larly those with a high percentage of low boiling unsaturated
(Potential Residue Method)
compounds, as these may cause explosive conditions within
D4057 Practice for Manual Sampling of Petroleum and
the apparatus. However, because of the unknown nature of
Petroleum Products
certain samples, the pressure vessel assembly shall include a
E1 Specification for ASTM Liquid-in-Glass Thermometers
safety burst-disc in order to safeguard the operator.)
4
2.2 Energy Institute Standards:
NOTE 1—For measurement of oxidation stability of gasoline by mea-
IP-138 Test Method for Oxidation Stability, Aviation Gaso-
surement of potential gum, refer to Test Method D873,orIPTest
line
Method 138.
5
Part IV— Petroleum and its Products
NOTE 2—The precision data were developed with gasolines derived
from hydrocarbon sources only without oxygenates.
3. Terminology
1.2 The accepted SI unit of pressure is the kilo Pascal (kPa),
3.1 Definitions of Terms Specific to This Standard:
and of temperature is °C.
3.1.1 break point, n—the point in the pressure-time curve
1.3 WARNING—Mercury has been designated by many
that is preceded by a pressure drop of exactly 14 kPa within 15
regulatory agencies as a hazardous material that can cause
min and succeeded by a drop of not less than 14 kPa in 15 min.
central nervous system, kidney and liver damage. Mercury, or
3.1.2 induction period, n—the time elapsed between the
its vapor, may be hazardous to health and corrosive to
placing of the pressure vessel in the bath and the break point at
materials.Cautionshouldbetakenwhenhandlingmercuryand
100°C.
mercury containing products. See the applicable product Ma-
terial Safety Data Sheet (MSDS) for details and EPA’s
4. Summary of Test Method
website—http://www.epa.gov/mercury/faq.htm—for addi-
4.1 The sample is oxidized in a pressure vessel initially
tional information. Users should be aware that selling mercury
filledat15to25°Cwithoxygenpressureat690to705kPaand
and/or mercury containing products into your state or country
heated at a temperature between 98 and 102°C.The pressure is
may be prohibited by law.
recorded continuously or read at stated intervals until the
1.4 This standard does not purport to address all of the
breakpoint is reached. The time required for the sample to
safety concerns, if any, associated with its use. It is the
reach this point is the observed induction period at the
responsibility of the user of this standard to establish appro-
temperature of test, from which the induction period at 100°C
1
This test method is under the jurisdiction of ASTM Committee D02 on
3
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
D02.14 on Stability and Cleanliness of Liquid Fuels. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
This test method has been approved by the sponsoring committees and accepted Standards volume information, refer to the standard’s Document Summary page on
by the Cooperating Societies in accordance with established procedures. the ASTM website.
4
Current edition approved April 15, 2012. Published May 2012. Originally Available from Energy Institute, 61 New Cavendish St., London WIM, 8AR
approved in 1939. Last previous edition approved in 2005 as D525–05. DOI: U.K.
5
10.1520/D0525-12. Aconvenienttemplateformeasuringthebreakpointisdescribedinthepaperby
2
Further information can be found in the June 1978, January 1979, and June Korb, E. L., “Induction Period Calculator,” ASTM Bulletin, No. 153, August 1948,
1986 editions of the Institute of Petroleum Review. pp. 99–102.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
British Standard 4347
Designation:D525–05 Designation: D525 – 12
Designation: 40/97
Standard Test Method for
1
Oxidation Stability of Gasoline (Induction Period Method)
This standard is issued under the fixed designation D525; 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 Department of Defense.
1. Scope*
1.1 This test method covers the determination of the stability of gasoline in finished form only, under accelerated oxidation
2
conditions. (Warning—This test method is not intended for determining the stability of gasoline components, particularly those
with a high percentage of low boiling unsaturated compounds, as these may cause explosive conditions within the apparatus.
However, because of the unknown nature of certain samples, the pressure vessel assembly shall include a safety burst-disc in order
to safeguard the operator.)
NOTE 1—For measurement of oxidation stability of gasoline by measurement of potential gum, refer to Test Method D873, or IP Test Method 138.
NOTE 2—The precision data were developed with gasolines derived from hydrocarbon sources only without oxygenates.
1.2 The accepted SI unit of pressure is the kilo Pascal (kPa), and of temperature is °C.
1.3
1.3 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.
1.4 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.
2. Referenced Documents
3
2.1 ASTM Standards:
D873 Test Method for Oxidation Stability of Aviation Fuels (Potential Residue Method)
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
E1 Specification for ASTM Liquid-in-Glass Thermometers
4
2.2 Energy Institute Standards:
IP-138 Test Method for Oxidation Stability, Aviation Gasoline
Part IV—Petroleum and its Products
5
Part IV— Petroleum and its Products
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.14 on
Stability and Cleanliness of Liquid Fuels.
This test method has been approved by the sponsoring committees and accepted by the Cooperating Societies in accordance with established procedures.
Current edition approved April 1, 2005.15, 2012. Published May 2005.2012. Originally approved in 1939. Last previous edition approved in 20012005 as
D525–01.D525–05. DOI: 10.1520/D0525-05.10.1520/D0525-12.
2
Further information can be found in the June 1978, January 1979, and June 1986 editions of the Institute of Petroleum Review.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from Energy Institute, 61 New Cavendish St., London WIM, 8AR U.K.
5
Aconvenient template for measuring the breakpoint is described in the paper by Korb, E. L., “Induction Period Calculator,” ASTM Bulletin, No. 153,August 1948, pp.
99–102.
*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
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D525 – 12
3.1.1 break pointbreak point, n—the point in the pressure-time curve that is preceded by a pressure drop of exactly 14 kPa
within 15 min and succeeded by a drop of not less than 14 kPa in 15 min.
3.1.2 induction periodinduction period, n—the t
...
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