ASTM D3143/D3143M-19

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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: D3143/D3143M − 13 D3143/D3143M − 19
Standard Test Method for
Flash Point of Cutback Asphalt with Tag Open-Cup
Apparatus
This standard is issued under the fixed designation D3143/D3143M; 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 covers the determination of flash points by the Tag Open-Cup Apparatusopen-cup apparatus of cutback
asphalts having flash points of less than 93°C [200°F].93 °C [200 °F].
NOTE 1—Specifications commonly designate the Cleveland Open Cupopen cup (Test Method D92–IP 36) Method , IP 36) method for asphalt cements
and cutback asphalts having flash points above 79°C [175°F].79 °C [175 °F].
NOTE 2—This procedure follows in general the procedure outlined in Test Method D1310, but is restricted to cutback asphalt having flash points of
less than 93°C [200°F].93 °C [200 °F].
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard.
1.4 Warning—Mercury has been designated by the United States Environmental Protection Agency and many state 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 mercury-containing
products. See the applicable Safety Data Sheet (SDS) or Material Safety Data Sheet (MSDS) for details and the EPA’s website
(http://www.epa.gov/mercury/index.htm) for additional information. Users should be aware that selling mercury and/or mercury
containing mercury-containing products intoin your state may be prohibited by state law.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 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.
1.7 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.
2. Referenced Documents
2.1 ASTM Standards:
D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester
D140D140/D140M Practice for Sampling Asphalt Materials
D1310 Test Method for Flash Point and Fire Point of Liquids by Tag Open-Cup Apparatus
D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
This test method is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.47 on
Miscellaneous Asphalt Tests.
Current edition approved Dec. 1, 2013June 15, 2019. Published January 2014June 2019. Originally approved in 1962. Last previous edition approved in 20082013 as
D3143 – 08.D3143/D3143M – 13. DOI: 10.1520/D3143_D3143M-13.10.1520/D3143_D3143M-19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3143/D3143M − 19
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants
E1 Specification for ASTM Liquid-in-Glass Thermometers
E77 Test Method for Inspection and Verification of Thermometers
E300 Practice for Sampling Industrial Chemicals
E644 Test Methods for Testing Industrial Resistance Thermometers
E1137/E1137M Specification for Industrial Platinum Resistance Thermometers
2.2 IP Standard:
IP 36 Test for Flash and Fire Points by Cleveland Open Cup
3. Summary of Test Method
3.1 The sample is placed in the cup of the tester and heated at a slow but constant rate. A small test flame is passed at a uniform
rate in a level plane across the cup at specified intervals. The flash point is the lowest temperature at which application of the test
flame causes the vapor at the surface of the liquid to flash.
4. Significance and Use
4.1 This test method is useful in determining that an asphalt cutback has been prepared with solvents that meet the desired range
of flammability, and that the product has not been contaminated with lower flash point solvents.
NOTE 3—The quality of results produced by this standard is dependent on the competence of the personnel performing the procedure and the capability,
calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent
and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely
ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guidance
provides a means of evaluating and controlling some of those factors.
5. Apparatus
5.1 Flash Tester—Tag Open-Cup Testeropen-cup tester (manual) (Fig. A1.1) as described in detail in Annex A1. Automatic Tag
open-cup tester is allowed in place of the manual. The machine must be performed in accordance with Section 9.
5.2 Shield, as described in detail in Annex A1.
5.3 Thermometer—A thermometer for measuring the temperature of the sample. The thermometer shall be one of the following:
5.3.1 An ASTM 9C [9F] liquid-in-glass thermometer with subdivisions and maximum scale error of 0.5°C [1°F]0.5 °C [1 °F]
which conforms to the requirements of Specification E1. The thermometer shall be standardized in accordance with one of the
methods in Test Method E77.
5.3.2 A platinum resistance thermometer (PRT) with a probe which conforms to the requirements of Specification
E1137/E1137M. The PRT shall have a 3-three- or 4-wirefour-wire configuration and the overall sheath length shall be at least 50
mm [2 in.] greater than the immersion depth. Calibrate the PRT system (probe and readout) in accordance with Test Methods E644.
6. Reagents and Materials
6.1 Bath Media:
6.1.1 Water, for flash points to 79°C [175°F].79 °C [175 °F].
6.1.2 Water-Glycol Solution, (1 + 1), for flash points above 79°C [175°F].79 °C [175 °F].
6.2 Cleaning Solvents—Use technical grade technical-grade solvent capable of cleaning out the test specimen from the test cup
and drying the test cup.
7. Sampling
7.1 Obtain a sample in accordance with the instructions given in PracticesPractice D140D140/D140M, D4057, D4177, or E300.
7.2 Transfer sample to the test cup when the sample is at least 10°C [18°F]10 °C [18 °F] below the expected flash point.
Erroneously high flash points may be obtained if precautions are not taken to avoid loss of volatile material. Do not open containers
unnecessarily; this will prevent the loss of volatile material and possible introduction of moisture. When possible, the flash point
should be the first test performed on a sample.
Available from Energy Institute, 61 New Cavendish St., London, WIG 7AR, U.K., http://www.energyinst.org.uk.
D3143/D3143M − 19
8. Assembly and Preparation of Apparatus
8.1 Place the tester in a level position on a solid vibration-free table in a location free of draft. Shield the top of the tester from
strong light so that the flash may be easily seen. Maintain a room temperature of 25 6 5°C5 °C [77 6 10°F]10 °F] throughout
the test.
8.2 Adjust the horizontal and vertical positions of the ignition taper so that the jet passes on the circumference of a circle having
a radius of 152 mm [6.0 in.] and in a level plane 3 mm [0.13 in.] above the upper edge of the cup as measured from the center
of the orifice. The jet should pass across the center of the cup at right angles to the thermometer. These adjustments should be made
only when required as usually the appa
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