ASTM D2386-15e1
(Test Method)Standard Test Method for Freezing Point of Aviation Fuels
Standard Test Method for Freezing Point of Aviation Fuels
SIGNIFICANCE AND USE
4.1 The freezing point of an aviation fuel is the lowest temperature at which the fuel remains free of solid hydrocarbon crystals that can restrict the flow of fuel through filters if present in the fuel system of the aircraft. The temperature of the fuel in the aircraft tank normally falls during flight depending on aircraft speed, altitude, and flight duration. The freezing point of the fuel must always be lower than the minimum operational tank temperature.
4.2 Freezing point is a requirement in Specifications D910 and D1655.
SCOPE
1.1 This test method covers the determination of the temperature below which solid hydrocarbon crystals may form in aviation turbine fuels and aviation gasoline.
Note 1: The interlaboratory program that generated the precisions for this test method did not include aviation gasoline.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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. For specific warning statements, see 5.4, Section 6, and 8.3.
General Information
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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´1
Designation: D2386 − 15
Designation: 16/15
Standard Test Method for
1
Freezing Point of Aviation Fuels
This standard is issued under the fixed designation D2386; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1
ε NOTE—A mercury caveat was removed from the scope editorially in July 2015.
1. Scope* E77Test Method for Inspection and Verification of Ther-
mometers
1.1 This test method covers the determination of the tem-
2.2 Energy Institute Standard:
perature below which solid hydrocarbon crystals may form in
4
IP Standards for Petroleum and Its Products IP 16/15
aviation turbine fuels and aviation gasoline.
NOTE 1—The interlaboratory program that generated the precisions for
3. Terminology
this test method did not include aviation gasoline.
3.1 Definitions of Terms Specific to This Standard:
1.2 The values stated in SI units are to be regarded as
3.1.1 freezing point, n—in aviation fuels, the fuel tempera-
standard. No other units of measurement are included in this
ture at which solid hydrocarbon crystals, formed on cooling,
standard.
disappear when the temperature of the fuel is allowed to rise
1.3 This standard does not purport to address all of the
under specified conditions of test.
safety concerns, if any, associated with its use. It is the
3.1.2 crystallization point, n—the temperature at which
responsibility of the user of this standard to establish appro-
crystals of hydrocarbons first appear when the test sample is
priate safety and health practices and determine the applica-
cooled.
bility of regulatory limitations prior to use. For specific
warning statements, see 5.4, Section 6, and 8.3.
4. Significance and Use
4.1 The freezing point of an aviation fuel is the lowest
2. Referenced Documents
temperature at which the fuel remains free of solid hydrocar-
2
2.1 ASTM Standards:
bon crystals that can restrict the flow of fuel through filters if
D910Specification for Leaded Aviation Gasolines
presentinthefuelsystemoftheaircraft.Thetemperatureofthe
D1655Specification for Aviation Turbine Fuels
fuel in the aircraft tank normally falls during flight depending
D3117Test Method for Wax Appearance Point of Distillate
on aircraft speed, altitude, and flight duration. The freezing
3
Fuels (Withdrawn 2010)
point of the fuel must always be lower than the minimum
D4057Practice for Manual Sampling of Petroleum and
operational tank temperature.
Petroleum Products
4.2 Freezing point is a requirement in Specifications D910
D4177Practice for Automatic Sampling of Petroleum and
and D1655.
Petroleum Products
E1Specification for ASTM Liquid-in-Glass Thermometers
5. Apparatus
5.1 Jacketed Sample Tube—A double-walled, unsilvered
1
This test method is under the jurisdiction of ASTM Committee D02 on
vessel, similar to a Dewar flask, the space between the inner
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
and outer tube walls being filled at atmospheric pressure with
Subcommittee D02.07 on Flow Properties.
dry nitrogen or air. The mouth of the sample tube shall be
Current edition approved June 1, 2015. Published June 2015. Originally
approved in 1965. Last previous edition approved in 2012 as D2386–06 (2012).
closed with a stopper supporting the thermometer and
DOI: 10.1520/D2386-15E01.
moisture-proof collar through which the stirrer passes (Fig. 1).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A cork stopper is recommended.
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.
3 4
The last approved version of this historical standard is referenced on Available from Energy Institute, 61 New Cavendish St., London, WIG 7AR,
www.astm.org. U.K., http://www.energyinst.org.
*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
---------------------- Page: 1 ----------------------
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D2386 − 15
FIG. 1 Freezing Point Apparatus
5.2 Collars—Moisture-proofcollarsasshowninFig.2shall 6. Reagents and Materials
be used to prevent condensation of moisture.
6.1 Acetone—Technical Grade acetone is suitable for the
5.3 Stirrer—Shallbemadeof1.6mmbrassorstainlesssteel cooling bath, provided it does not leave a residue on drying.
rod bent into a smooth three-loop spiral at the bottom. (Warning—Extremely flammable.)
NOTE 2—The stirrer may be mechanically act
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
´1
Designation: D2386 − 15 D2386 − 15
Designation: 16/15
Standard Test Method for
1
Freezing Point of Aviation Fuels
This standard is issued under the fixed designation D2386; 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 U.S. Department of Defense.
1
ε NOTE—A mercury caveat was removed from the scope editorially in July 2015.
1. Scope*
1.1 This test method covers the determination of the temperature below which solid hydrocarbon crystals may form in aviation
turbine fuels and aviation gasoline.
NOTE 1—The interlaboratory program that generated the precisions for this test method did not include aviation gasoline.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
1.3 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. For specific warning statements, see 5.4, Section 6, and 8.3.
2. Referenced Documents
2
2.1 ASTM Standards:
D910 Specification for Leaded Aviation Gasolines
D1655 Specification for Aviation Turbine Fuels
3
D3117 Test Method for Wax Appearance Point of Distillate Fuels (Withdrawn 2010)
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
E1 Specification for ASTM Liquid-in-Glass Thermometers
E77 Test Method for Inspection and Verification of Thermometers
2.2 Energy Institute Standard:
4
IP Standards for Petroleum and Its Products IP 16/15
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 freezing point, n—in aviation fuels, the fuel temperature at which solid hydrocarbon crystals, formed on cooling, disappear
when the temperature of the fuel is allowed to rise under specified conditions of test.
3.1.2 crystallization point, n—the temperature at which crystals of hydrocarbons first appear when the test sample is cooled.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.07 on Flow Properties.
Current edition approved June 1, 2015. Published June 2015. Originally approved in 1965. Last previous edition approved in 2012 as D2386 – 06 (2012). DOI:
10.1520/D2386-15.10.1520/D2386-15E01.
2
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.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from Energy Institute, 61 New Cavendish St., London, WIG 7AR, U.K., http://www.energyinst.org.
*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
---------------------- Page: 1 ----------------------
´1
D2386 − 15
4. Significance and Use
4.1 The freezing point of an aviation fuel is the lowest temperature at which the fuel remains free of solid hydrocarbon crystals
that can restrict the flow of fuel through filters if present in the fuel system of the aircraft. The temperature of the fuel in the aircraft
tank normally falls during flight depending on aircraft speed, altitude, and flight duration. The freezing point of the fuel must
always be lower than the minimum operational tank temperature.
4.2
...
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