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ASTM E1858-03

(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 Computer or electronic-based instruments, techniques or data treatment equivalent to this test method may also be used.
Note 1—Since all electronic data treatments are not equivalent, the user shall verify equivalency to this method.
1.3 Test Method A— A differential scanning calorimeter (DSC) is used at ambient pressure, for example, about 100 kPa of oxygen.
1.4 Test Method B—A pressure DSC (PDSC) is used at high pressure, for example, 3.5 MPa (500 psig) oxygen.
1.5 SI values are the standard.
1.6 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.
1.7 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 6 and Note 14.

General Information

Status
Historical
Publication Date
09-Mar-2003
ICS
71.080.01 - Organic chemicals in general
Technical Committee
E37 - Thermal Measurements
Drafting Committee
E37.01 - Calorimetry and Mass Loss
Current Stage
Ref Project

Relations

Replaces
ASTM E1858-00 - Standard Test Method for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry
Effective Date
10-Mar-2003
Replaced By
ASTM E1858-08 - Standard Test Method for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry
Effective Date
01-Sep-2008
Referred By
ASTM E2744-21 - Standard Test Method for Pressure Calibration of Thermal Analyzers
Effective Date
10-Mar-2003
Referred By
ASTM E2070-13(2018) - Standard Test Methods for Kinetic Parameters by Differential Scanning Calorimetry Using Isothermal Methods
Effective Date
10-Mar-2003
Referred By
ASTM E2009-23 - Standard Test Methods for Oxidation Onset Temperature of Hydrocarbons by Differential Scanning Calorimetry
Effective Date
10-Mar-2003
Referred By
ASTM E2046-19 - Standard Test Method for Reaction Induction Time by Thermal Analysis
Effective Date
10-Mar-2003
Referred By
ASTM D5483-21 - Standard Test Method for Oxidation Induction Time of Lubricating Greases by Pressure Differential Scanning Calorimetry
Effective Date
10-Mar-2003
Referred By
ASTM E1860-23 - Standard Test Method for Elapsed Time Calibration of Thermal Analyzers
Effective Date
10-Mar-2003

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ASTM E1858-03 - Standard Test Method for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning CalorimetryASTM E1858-03 - Standard Test Method for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry
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ASTM E1858-03 - Standard Test Method for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry
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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
Designation:E1858–03
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 (e) indicates an editorial change since the last revision or reapproval.
4
1. Scope munications Wire and Cable
D 5482 Test Method for Oxidation Induction Time of Lu-
1.1 This test method describes the determination of the
bricating Greases by Pressure Differential Scanning Calo-
oxidative properties of hydrocarbons by differential scanning
5
rimetry
calorimetry or pressure differential scanning calorimetry and is
D 5885 Test Method for Oxidative Induction Time of Poly-
applicable to hydrocarbons that oxidize exothermically in their
olefinGeosynthicsByHighPressureDifferentialScanning
analyzed form.
6
Calorimetry
1.2 Computer or electronic-based instruments, techniques
D 6186 Test Method for Oxidation Induction Time of Lu-
or data treatment equivalent to this test method may also be
bricating Oils by Pressure Differential Scanning Calorim-
used.
etry (PDSC) Polyolefin Geosynthics By High Pressure
NOTE 1—Since all electronic data treatments are not equivalent, the 7
Differential Scanning Calorimetry
user shall verify equivalency to this method.
8
E 473 Terminology Relating to Thermal Analysis
1.3 Test Method A— A differential scanning calorimeter
E 691 Practice for Conducting and Interlaboratory StudyTo
8
(DSC) is used at ambient pressure, for example, about 100 kPa
Determine the Precision of a Test Method
of oxygen.
E 967 Practice for Temperature Calibration of Differential
8
1.4 Test Method B—ApressureDSC(PDSC)isusedathigh
Scanning Calorimeters
pressure, for example, 3.5 MPa (500 psig) oxygen.
E 1860 Test Method for Elapsed Time Calibration of Ther-
8
1.5 SI values are the standard.
mal Analyzers
1.6 This test method is related to ISO 11357–6 but is
2.2 Other Standards:
different in technical content. This test method is related to
ISO 11357–6 Plastice-Differential Scanning Calorimetry
9
CEC L-85–T but includes additional experimental conditions.
(DSC) — Part 6: Oxidation Induction Time
10
1.7 This standard does not purport to address all of the
CEC L-85–T Hot Surface Oxidation
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3.1 Definitions:
bility of regulatory limitations prior to use. Specific precau-
3.1.1 Specific technical terms used in this test method are
tionary statements are given in Note 6 and Note 14.
given in Terminology E 473.
2. Referenced Documents
4. Summary of Test Method
2.1 ASTM Standards:
4.1 The test specimen in an aluminum pan and the reference
D 3350 Specification for Polyethylene Plastic Pipe and
aluminum pan are heated to a specified constant test tempera-
2
Fitting Materials
ture in an oxygen environment. Heat flow out of the specimen
D 3895 Test Method for Oxidative-Induction Time of Poly-
is monitored at an isothermal temperature until the oxidative
3
olefins by Differential Scanning Calorimetry
reaction is manifested by heat evolution on the thermal curve.
D 4565 Test Method for Physical Environmental Perfor-
The oxidative induction time (OIT), a relative measure of
mance Properties of Insulations and Jackets for Telecom-
oxidative stability at the test temperature, is determined from
1 4
This test method is under the direct jurisdiction of Committee E37 on Thermal Annual Book of ASTM Standards, Vol 10.02.
5
Measurements and is the direct responsibility of Subcommittee E37.01 on Test Annual Book of ASTM Standards, Vol 05.03.
6
Methods and Recommended Practices. Annual Book of ASTM Standards,, Vol 04.09.
7
Current edition approved March 10, 2003. Published April 2003. Originally Annual Book of ASTM Standards, Vol 05.04.
8
approved in 1997. Last previous edition approved in 2000 as E 1858–00. Annual Book of ASTM Standards, Vol 14.02.
2 9
Annual Book of ASTM Standards, Vol 08.03. Available from ANSI, 11 W. 42nd Street, 13th Floor, New York, NY 10036.
3 10
Annual Book of ASTM Standards, Vol 08.02. Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E1858–03
datarecordedduringtheisothermaltest.TheOITmeasurement 6. Apparatus
is initiated upon reaching the isothermal test temperature.
6.1 Differential Scanning Calorimeter or Pressure Differen-
4.2 For some particularly stable m
...

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ASTM E1858-23(Test Method)
Standard Test Methods for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry

SIGNIFICANCE AND USE
5.1 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.  
5.2 Typical uses include the oxidative stability of edible oils and fats (oxidative rancidity), lubricants, greases, and polyolefins.
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1.1 These test methods describe 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 Units—The values stated in SI units are to be regarded as standard. Imperial units are provided for user convenience and are not the standard.  
1.5 These test methods are related to ISO 11357–6 but is different in technical content. These test methods are 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  Specific precautionary statements are given in 7.4 and 12.10.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM D5236-23(Test Method)
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SIGNIFICANCE AND USE
5.1 This test method is one of a number of tests conducted on heavy hydrocarbon mixtures to characterize these materials for a refiner or a purchaser. It provides an estimate of the yields of fractions of various boiling ranges.  
5.2 The fractions made by this test method can be used alone or in combination with other fractions to produce samples for analytical studies and quality evaluations.  
5.3 Residues to be used in the manufacture of asphalt can also be made but may not always be suitable. The long heat soaking that occurs in this test method may alter some of the properties.
Note 1: While the practice of reblending distillates with residue can be done to produce a lighter residue, it is not recommended because it produces blends with irregular properties.  
5.4 Details of cutpoints must be mutually agreed upon before the test begins.  
5.5 This is a complex procedure involving many interacting variables. It is most important that at the time of first use of a new apparatus, its components be checked as detailed in Annex A1 and Annex A2 and that the location of the vapor temperature sensor be verified as detailed in 6.5.3 and Fig. 1.
SCOPE
1.1 This test method covers the procedure for distillation of heavy hydrocarbon mixtures having initial boiling points greater than 150 °C (300 °F), such as heavy crude oils, petroleum distillates, residues, and synthetic mixtures. It employs a potstill with a low pressure drop entrainment separator operated under total takeoff conditions. Distillation conditions and equipment performance criteria are specified and typical apparatus is illustrated.  
1.2 This test method details the procedures for the production of distillate fractions of standardized quality in the gas oil and lubricating oil range as well as the production of standard residue. In addition, it provides for the determination of standard distillation curves to the highest atmospheric equivalent temperature possible by conventional distillation.  
1.3 The maximum achievable atmospheric equivalent temperature (AET) is dependent upon the heat tolerance of the charge. For most samples, a temperature up to 565 °C (1050 °F) can be attained. This maximum will be significantly lower for heat sensitive samples (for example, heavy residues) and might be somewhat higher for nonheat sensitive samples.  
1.4 The recommended distillation method for crude oils up to cutpoint 400 °C (752 °F) AET is Test Method D2892. This test method can be used for heavy crude oils with initial boiling points greater than 150 °C (302 °F). However, distillation curves and fraction qualities obtained by these methods are not comparable.  
1.5 This test method contains the following annexes:  
1.5.1 Annex A1—Test Method for Determination of Temperature Response Time,  
1.5.2 Annex A2—Practice for Calibration of Sensors,  
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1.5.5 Annex A5—Test Method for Determination of Wettage.  
1.6 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific warnings, see 6.5.4.2, 6.5.6.3, 6.9.3, 9.5, 9.7, and A2.3.1.3.  
1.8 WARNING—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution when handling mercury and mercury-containing...

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ASTM E1064-23(Test Method)
Standard Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration

SIGNIFICANCE AND USE
4.1 The coulometric technique is especially suited for determining low concentrations of water in organic liquids that would yield small titers by the Karl Fischer volumetric procedure. The precision and accuracy of the coulometric technique decreases for concentrations of water much greater than 2.0 % because of the difficulty in measuring the small size of sample required. The test method assumes 100 % efficiency of coulombs in iodine production. Provision is made for verifying this efficiency. (See Table 1 and Note 5.)
SCOPE
1.1 This test method covers the determination of water from 0 % to 2.0 % mass in most liquid organic chemicals, with Karl Fischer reagent, using an automated coulometric titration procedure. Use of this test method is not applicable for liquefied gas products such as Liquid Petroleum Gas (LPG), Butane, Propane, Liquid Natural Gas (LNG), etc.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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ASTM D1722-09(2023)(Test Method)
Standard Test Method for Water Miscibility of Water-Soluble Solvents

SIGNIFICANCE AND USE
4.1 Water-insoluble materials present in a solvent expected to be completely water miscible may interfere with many uses of the solvent. This test method provides a measure of the miscibility of water-soluble solvents with a polar medium-water. It also provides a qualitative indication of the presence or absence of water-immiscible contaminants.  
4.2 The results of this test method may be used in assessing compliance with a specification. Prior to agreeing to this test method as the basis of a specification requirement, it may be desirable that the interpretation of what constitutes cloudiness or turbidity be agreed upon between the supplier and the purchaser.
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1.1 This test method covers the determination of the miscibility of water-soluble solvents with water. While written specifically for testing acetone, isopropyl alcohol (isopropanol), and methyl alcohol (methanol), the method is suitable for testing most water-soluble solvents.  
1.2 This test method serves to detect water-immiscible contaminants qualitatively; the level of detection of these impurities varies widely with both the type of solvent and the type of impurity.  
1.3 The level of detection of water-insoluble materials depends upon the solvent tested and the type of impurity or impurities present, that is paraffin, olefin, aromatic, high molecular weight alcohol, or ketone, etc. There is, therefore, no specific level of impurity detected by this procedure.  
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1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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5.1 The aniline point (or mixed aniline point) is useful as an aid in the characterization of pure hydrocarbons and in the analysis of hydrocarbon mixtures. Aromatic hydrocarbons exhibit the lowest, and paraffins the highest values. Cycloparaffins and olefins exhibit values that lie between those for paraffins and aromatics. In homologous series the aniline points increase with increasing molecular weight. Although it occasionally is used in combination with other physical properties in correlative methods for hydrocarbon analysis, the aniline point is most often used to provide an estimate of the aromatic hydrocarbon content of mixtures.
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1.1 These test methods cover the determination of the aniline point of petroleum products and hydrocarbon solvents. Test Method A is suitable for transparent samples with an initial boiling point above room temperature and where the aniline point is below the bubble point and above the solidification point of the aniline-sample mixture. Test Method B, a thin-film method, is suitable for samples too dark for testing by Test Method A. Test Methods C and D are for samples that may vaporize appreciably at the aniline point. Test Method D is particularly suitable where only small quantities of sample are available. Test Method E describes a procedure using an automatic apparatus suitable for the range covered by Test Methods A and B.  
1.2 These test methods also cover the determination of the mixed aniline point of petroleum products and hydrocarbon solvents having aniline points below the temperature at which aniline will crystallize from the aniline-sample mixture.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in Section 7.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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Standard Test Method for Autoignition Temperature of Chemicals

SIGNIFICANCE AND USE
5.1 Autoignition, by its very nature, is dependent on the chemical and physical properties of the material and the method and apparatus employed for its determination. The autoignition temperature by a given method does not necessarily represent the minimum temperature at which a given material will self-ignite in air. The volume of the vessel used is particularly important since lower autoignition temperatures will be achieved in larger vessels. (See Appendix X2.) Vessel material can also be an important factor.  
5.2 The temperatures determined by this test method are those at which air oxidation leads to ignition. These temperatures can be expected to vary with the test pressure and oxygen concentration.  
5.3 This test method is not designed for evaluating materials which are capable of exothermic decomposition. For such materials, ignition is dependent upon the thermal and kinetic properties of the decomposition, the mass of the sample, and the heat transfer characteristics of the system.  
5.4 This test method can be employed for solid chemicals which melt and vaporize or which readily sublime at the test temperature. No condensed phase, liquid or solid, should be present when ignition occurs.  
5.5 This test method is not designed to measure the autoignition temperature of materials which are solids or liquids at the test temperature (for example, wood, paper, cotton, plastics, and high-boiling point chemicals). Such materials will thermally degrade in the flask and the accumulated degradation products may ignite.  
5.6 This test method can be used, with appropriate modifications, for chemicals that are gaseous at atmospheric temperature and pressure.  
5.7 This test method was developed primarily for liquid chemicals but has been employed to test readily vaporized solids. Responsibility for extension of this test method to solids of unknown thermal stability, boiling point, or degradation characteristics rests with the operator.
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1.1 This test method covers the determination of hot- and cool-flame autoignition temperatures of a liquid chemical in air at atmospheric pressure in a uniformly heated vessel.  
Note 1: Within certain limitations, this test method can also be used to determine the autoignition temperature of solid chemicals which readily melt and vaporize at temperatures below the test temperature and for chemicals that are gaseous at atmospheric pressure and temperature.
Note 2: After a round robin study, Test Method D2155 was discontinued, and replaced by Test Method E659 in 1978. See also Appendix X2.  
1.2 This standard should be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM E324-23(Test Method)
Standard Test Method for Relative Initial and Final Melting Points and the Melting Range of Organic Chemicals

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5.1 It has long been recognized that narrow melting range and high final melting point are good indications of high purity in crystalline organic compounds. Several ASTM test methods use these criteria to assay the purity of organic compounds (Note 1).
Note 1: Other ASTM test methods using melting (or freezing point) data to indicate sample purity are Test Methods D852 and D6875.  
5.2 The relatively simple and rapid test prescribed in this test method shows the sample under test to be either more or less pure than the standard sample. For specification purposes, a minimum allowable purity can be assured by setting limits on the differences in final melting points and the melting ranges between the standard sample and the sample under test.
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1.1 This test method covers the determination, by a capillary tube method, of the initial melting point and the final melting point, which define the melting range, of samples of organic chemicals whose melting points without decomposition fall between 30 °C and 250 °C.  
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1.3 This test method is not directly applicable to opaque materials or to noncrystalline materials such as waxes, fats, and fatty acids.  
1.4 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, handling, and safety precautions.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM D6875-23(Test Method)
Standard Test Method for Solidification Point of Industrial Organic Chemicals by Thermistor

SIGNIFICANCE AND USE
5.1 This test method may be used for process control during the manufacture of organic chemicals described in Section 1, for setting specifications, for development and research work, and to determine if contamination was introduced during shipment.
SCOPE
1.1 This test method covers a general procedure for determining the solidification point of most organic chemicals having appreciable heats of fusion and solidification points between 4 °C and 41 °C.
Note 1: Other test methods for determining freeze point and solidification point of aromatic hydrocarbons include Test Methods D852, D1015, D1016, D3799, D4493, and D6269.  
1.2 This test method is applicable to relatively pure compounds only. Solidification point depression is dependent on impurity concentrations.  
1.3 The following applies to all specified limits in this test method: for purposes of determining conformance with applicable specifications using this test method, an observed value or a calculated value shall be rounded off “to the nearest unit” in the last right hand digit used in expressing the specification limit, in accordance with the “rounding-off method” of Practice E29.  
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 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see Section 8, Hazards.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM E1547-09(2023)(Terminology)
Standard Terminology Relating to Industrial and Specialty Chemicals

SCOPE
1.1 This standard covers terminology relating to industrial and specialty chemicals. It is intended to provide an understanding of terms commonly used in test methods, practices, and specifications throughout the industry.  
Note 1: The boldface numbers following each definition refer to E15 standards in which the definition appears. Lightface numbers refer to the E15 subcommittee having jurisdiction.  
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ASTM E1858-23(Test Method)
Standard Test Methods for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry

SIGNIFICANCE AND USE
5.1 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.  
5.2 Typical uses include the oxidative stability of edible oils and fats (oxidative rancidity), lubricants, greases, and polyolefins.
SCOPE
1.1 These test methods describe 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 Units—The values stated in SI units are to be regarded as standard. Imperial units are provided for user convenience and are not the standard.  
1.5 These test methods are related to ISO 11357–6 but is different in technical content. These test methods are 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  Specific precautionary statements are given in 7.4 and 12.10.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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  • Standard
    6 pages
    English language
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