ASTM D6450-05

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Designation:D6450–05
Standard Test Method for
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Flash Point by Continuously Closed Cup (CCCFP) Tester
This standard is issued under the fixed designation D6450; 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* responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1.1 This flash point test method is a dynamic method and
bility of regulatory limitations prior to use. Specific warning
depends on definite rates of temperature increase. It is one of
statements appear throughout the standard.
the many flash point test methods available, and every flash
point test method, including this one, is an empirical method.
2. Referenced Documents
NOTE 1—Flash point values are not a constant physical-chemical 2
2.1 ASTM Standards:
property of materials tested. They are a function of the apparatus design,
D4057 Practice for Manual Sampling of Petroleum and
the condition of the apparatus used, and the operational procedure carried
Petroleum Products
out. Flash point can therefore only be defined in terms of a standard test
D4177 Practice for Automatic Sampling of Petroleum and
method, and no general valid correlation can be guaranteed between
Petroleum Products
results obtained by different test methods or with test apparatus different
from that specified.
D6299 Practice for Applying Statistical Quality Assurance
and Control Charting Techniques to Evaluate Analytical
1.2 This test method covers the determination of the flash
Measurement System Performance
point of fuel oils, lube oils, solvents, and other liquids by a
D6300 Practice for Determination of Precision and Bias
continuously closed cup tester. The measurement is made on a
Data for Use in Test Methods for Petroleum Products and
test specimen of 1 mL.
Lubricants
1.3 This test method utilizes a closed but unsealed cup with
E300 Practice for Sampling Industrial Chemicals
air injected into the test chamber.
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2.2 ISO Standards:
1.4 This test method is suitable for testing samples with a
ISO Guide 34 Quality Systems Guidelines for the Produc-
flash point from 10 to 250°C.
tion of Reference Materials
NOTE 2—Flash point determinations below 10°C and above 250°C can
ISO Guide 35 Certifications of Reference Material – Gen-
be performed; however, the precision has not been determined below and
eral and Statistical Principles
above these temperatures.
3. Terminology
1.5 If the user’s specification requires a defined flash point
methodotherthanthistestmethod,neitherthistestmethodnor
3.1 Definitions:
any other method should be substituted for the prescribed
3.1.1 dynamic, adj—the condition in which the vapor above
method without obtaining comparative data and an agreement
the test specimen and the test specimen are not in temperature
from the specifier.
equilibrium at the time at which the ignition source is applied.
1.6 The values stated in SI units are to be regarded as
3.1.2 flash point, n—the lowest temperature corrected to a
standard. No other units of measurement are included in this
pressure of 101.3 kPa at which application of an ignition
standard. Temperatures are in degrees Celsius, and pressure is
source causes the vapors of a specimen of the sample to ignite
in kilo-pascals.
momentarily under specified conditions of the test.
1.7 This standard does not purport to address all of the
3.1.2.1 Discussion—Forthepurposeofthistestmethod,the
safety concerns, if any, associated with its use. It is the
test specimen is deemed to have flashed when the hot flame of
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This test method is under the jurisdiction of ASTM Committee D02 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
D02.08 on Volatility. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2005. Published May 2005. Originally the ASTM website.
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approved in 1999. Last previous edition approved in 1999 as D6450–99. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/D6450-05. 4th Floor, New York, NY 10036.
*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.
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D6450–05
the ignited vapor causes an instantaneous pressure increase of 6. Apparatus
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at least 20 kPa inside the closed measuri
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