ASTM E1858-08
(Test Method)Standard Test Method for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry
Standard Test Method for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry
SIGNIFICANCE AND USE
Oxidative induction time is a relative measure of the degree of oxidative stability of the material evaluated at the isothermal temperature of the test. The presence, quantity or effectiveness of antioxidants may be determined by this method. The OIT values thus obtained may be compared from one hydrocarbon to another or to a reference material to obtain relative oxidative stability information.
Typical uses include the oxidative stability of edible oils and fats (oxidative rancidity), lubricants, greases, and polyolefins.
SCOPE
1.1 This test method describes the determination of the oxidative properties of hydrocarbons by differential scanning calorimetry or pressure differential scanning calorimetry and is applicable to hydrocarbons that oxidize exothermically in their analyzed form.
1.2 Test Method A— A differential scanning calorimeter (DSC) is used at ambient pressure, for example, about 100 kPa of oxygen.
1.3 Test Method B— A pressure DSC (PDSC) is used at high pressure, for example, 3.5 MPa (500 psig) oxygen.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This test method is related to ISO 11357–6 but is different in technical content. This test method is related to CEC L-85–T but includes additional experimental conditions.
1.6 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. Specific precautionary statements are given in Note 5 and Note 13.
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Designation: E1858 − 08
StandardTest Method for
Determining Oxidation Induction Time of Hydrocarbons by
1
Differential Scanning Calorimetry
This standard is issued under the fixed designation E1858; 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.
1. Scope formance Properties of Insulations and Jackets for Tele-
communications Wire and Cable
1.1 This test method describes the determination of the
D5482 Test Method for Vapor Pressure of Petroleum Prod-
oxidative properties of hydrocarbons by differential scanning
ucts (Mini Method—Atmospheric)
calorimetry or pressure differential scanning calorimetry and is
D5885 Test Method for Oxidative Induction Time of Poly-
applicable to hydrocarbons that oxidize exothermically in their
olefin Geosynthetics by High-Pressure Differential Scan-
analyzed form.
ning Calorimetry
1.2 Test Method A—A differential scanning calorimeter
D6186 Test Method for Oxidation Induction Time of Lubri-
(DSC) is used at ambient pressure, for example, about 100 kPa
cating Oils by Pressure Differential Scanning Calorimetry
of oxygen.
(PDSC)
1.3 Test Method B—Apressure DSC (PDSC) is used at high E473 Terminology Relating to Thermal Analysis and Rhe-
ology
pressure, for example, 3.5 MPa (500 psig) oxygen.
E691 Practice for Conducting an Interlaboratory Study to
1.4 The values stated in SI units are to be regarded as
Determine the Precision of a Test Method
standard. No other units of measurement are included in this
E967 Test Method for Temperature Calibration of Differen-
standard.
tial Scanning Calorimeters and Differential Thermal Ana-
1.5 This test method is related to ISO 11357–6 but is
lyzers
different in technical content. This test method is related to
E1860 Test Method for Elapsed Time Calibration of Ther-
CEC L-85–T but includes additional experimental conditions.
mal Analyzers
1.6 This standard does not purport to address all of the
2.2 Other Standards:
safety concerns, if any, associated with its use. It is the
ISO 11357–6 Plastice-Differential Scanning Calorimetry
3
responsibility of the user of this standard to establish appro-
(DSC) — Part 6: Oxidation Induction Time
4
priate safety and health practices and determine the applica-
CEC L-85–T Hot Surface Oxidation
bility of regulatory limitations prior to use. Specific precau-
tionary statements are given in Note 5 and Note 13.
3. Terminology
3.1 Definitions:
2. Referenced Documents
3.1.1 Specific technical terms used in this test method are
2
2.1 ASTM Standards:
given in Terminology E473.
D3350 Specification for Polyethylene Plastics Pipe and Fit-
tings Materials
4. Summary of Test Method
D3895 Test Method for Oxidative-Induction Time of Poly-
4.1 The test specimen in an aluminum pan and the reference
olefins by Differential Scanning Calorimetry
aluminum pan are heated to a specified constant test tempera-
D4565 Test Methods for Physical and Environmental Per-
ture in an oxygen environment. Heat flow out of the specimen
is monitored at an isothermal temperature until the oxidative
1 reaction is manifested by heat evolution on the thermal curve.
This test method is under the direct jurisdiction of Committee E37 on Thermal
Measurements and is the direct responsibility of Subcommittee E37.01 on Calo- The oxidative induction time (OIT), a relative measure of
rimetry and Mass Loss.
oxidative stability at the test temperature, is determined from
Current edition approved Sept. 1, 2008. Published October 2008. Originally
approved in 1997. Last previous edition approved in 2003 as E1858 – 03. DOI:
10.1520/E1858-08.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
the ASTM website. PA 15096-0001, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E1858 − 08
datarecordedduringtheisothermaltest.TheOITmeasurement 6.1.3 A Data Collection Device, to provide a means of
is initiated upon reaching the isothermal test temperature. acquiring, storing, and displaying measured or calculated
signals,orboth.TheminimumoutputsignalsrequiredforDSC
4.2 For some particularly stable materials, the OIT may be
are heat flow, temperature and tim
...
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.
Designation:E1858–03 Designation:E1858–08
Standard Test Method for
Determining Oxidation Induction Time of Hydrocarbons by
1
Differential Scanning Calorimetry
This standard is issued under the fixed designation E 1858; 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.
1. Scope
1.1 This test method describes the determination of the oxidative properties of hydrocarbons by differential scanning
calorimetry or pressure differential scanning calorimetry and is applicable to hydrocarbons that oxidize exothermically in their
analyzed form.
1.2Computer or electronic-based instruments, techniques or data treatment equivalent to this test method may also be used.
NOTE1—Since all electronic data treatments are not equivalent, the user shall verify equivalency to this method.
1.3
1.2 Test Method A— A differential scanning calorimeter (DSC) is used at ambient pressure, for example, about 100 kPa of
oxygen.
1.4
1.3 Test Method B— A pressure DSC (PDSC) is used at high pressure, for example, 3.5 MPa (500 psig) oxygen.
1.5SI values are the standard.
1.6This test method is related to ISO 11357–6 but is different in technical content. This test method is related to CEC L-85–T
but includes additional experimental conditions.
1.7
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This test method is related to ISO 11357–6 but is different in technical content. This test method is related to CEC L-85–T
but includes additional experimental conditions.
1.6 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. Specific precautionary statements are given in Note 65 and Note 14Note 13.
2. Referenced Documents
2
2.1 ASTM Standards:
D 3350 Specification for Polyethylene Plastics Pipe and Fittings Materials
D 3895 Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry
D 4565 Test Methods for Physical and Environmental Performance Properties of Insulations and Jackets for Telecommunica-
tions Wire and Cable
D 5482Test Method for Oxidation Induction Time of Lubricating Greases by Pressure Differential Scanning Calorimetry Test
Method for Vapor Pressure of Petroleum Products (Mini MethodAtmospheric)
D 5885 Test Method for Oxidative Induction Time of Polyolefin Geosynthetics B by High-Pressure Differential Scanning
Calorimetry
D 6186Test Method for Oxidation Induction Time of Lubricating Oils by Pressure Differential Scanning Calorimetry (PDSC)
Polyolefin Geosynthics By High Pressure Differential Scanning Calorimetry Test Method for Oxidation Induction Time of
Lubricating Oils by Pressure Differential Scanning Calorimetry (PDSC)
E 473 Terminology Relating to Thermal Analysis and Rheology
E 691 Practice for Conducting andan Interlaboratory Study Toto Determine the Precision of a Test Method
8
E 967Practice for Temperature Calibration of Differential Scanning Calorimeters Test Method for Temperature Calibration of
1
This test method is under the direct jurisdiction of Committee E37 on Thermal Measurements and is the direct responsibility of Subcommittee E37.01 on Thermal Test
Methods and Recommended Practices.
Current edition approved March 10, 2003.Sept. 1, 2008. Published April 2003.October 2008. Originally approved in 1997. Last previous edition approved in 20002003
as E 1858–003.
2
Annual Book of ASTM Standards, Vol 08.03.
2
Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR: E37–1018.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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E1858–08
Differential Scanning Calorimeters and Differential Thermal Analyzers
E 1860 Test Method for Elapsed Time Calibration of Thermal Analyzers
2.2 Other Standards:
3
ISO 11357–6 Plastice-Differential Scanning Calorimetry (DSC) — Part 6: Oxidation Induction Time
4
CEC L-85–T Hot Surface Oxidation
3. Terminology
3.1 Definitions:
3.1.1 Specific technical terms used in this test method are given in Termi
...
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