ASTM D189-05
(Test Method)Standard Test Method for Conradson Carbon Residue of Petroleum Products
Standard Test Method for Conradson Carbon Residue of Petroleum Products
SCOPE
1.1 This test method covers the determination of the amount of carbon residue (Note 0) left after evaporation and pyrolysis of an oil, and is intended to provide some indication of relative coke-forming propensities. This test method is generally applicable to relatively nonvolatile petroleum products which partially decompose on distillation at atmospheric pressure. Petroleum products containing ash-forming constituents as determined by Test Method D 482 or IP Method 4 will have an erroneously high carbon residue, depending upon the amount of ash formed (Note 0 and Note 0). Note 0The term carbon residue is used throughout this test method to designate the carbonaceous residue formed after evaporation and pyrolysis of a petroleum product under the conditions specified in this test method. The residue is not composed entirely of carbon, but is a coke which can be further changed by pyrolysis. The term carbon residue is continued in this test method only in deference to its wide common usage.Note 0
Values obtained by this test method are not numerically the same as those obtained by Test Method D 524. Approximate correlations have been derived (see ), but need not apply to all materials which can be tested because the carbon residue test is applied to a wide variety of petroleum products.Note 4
The test results are equivalent to Test Method D 4530, (see ).Note 0
In diesel fuel, the presence of alkyl nitrates such as amyl nitrate, hexyl nitrate, or octyl nitrate causes a higher residue value than observed in untreated fuel, which can lead to erroneous conclusions as to the coke forming propensity of the fuel. The presence of alkyl nitrate in the fuel can be detected by Test Method D 4046.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
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Standards Content (Sample)
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An American National Standard
Designation:D189–05 British Standard 4380
Designation: 13/94
Standard Test Method for
1
Conradson Carbon Residue of Petroleum Products
This standard is issued under the fixed designation D189; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
the coke forming propensity of the fuel. The presence of alkyl nitrate in
1. Scope*
the fuel can be detected by Test Method D4046.
1.1 Thistestmethodcoversthedeterminationoftheamount
1.2 The values stated in SI units are to be regarded as the
of carbon residue (Note 1) left after evaporation and pyrolysis
standard. The values given in parentheses are for information
ofanoil,andisintendedtoprovidesomeindicationofrelative
only.
coke-forming propensities. This test method is generally ap-
1.3 This standard does not purport to address all of the
plicable to relatively nonvolatile petroleum products which
safety concerns, if any, associated with its use. It is the
partially decompose on distillation at atmospheric pressure.
responsibility of the user of this standard to establish appro-
Petroleum products containing ash-forming constituents as
priate safety and health practices and determine the applica-
determinedbyTestMethodD482orIPMethod4willhavean
bility of regulatory limitations prior to use.
erroneously high carbon residue, depending upon the amount
of ash formed (Note 2 and Note 4).
2. Referenced Documents
NOTE 1—The term carbon residue is used throughout this test method 2
2.1 ASTM Standards:
to designate the carbonaceous residue formed after evaporation and
D482 Test Method for Ash from Petroleum Products
pyrolysisofapetroleumproductundertheconditionsspecifiedinthistest
D524 Test Method for Ramsbottom Carbon Residue of
method. The residue is not composed entirely of carbon, but is a coke
Petroleum Products
which can be further changed by pyrolysis. The term carbon residue is
continuedinthistestmethodonlyindeferencetoitswidecommonusage. D4046 Test Method for Alkyl Nitrate in Diesel Fuels by
NOTE 2—Values obtained by this test method are not numerically the
Spectrophotometry
same as those obtained by Test Method D524.Approximate correlations
D4057 Practice for Manual Sampling of Petroleum and
have been derived (see Fig. X1.1), but need not apply to all materials
Petroleum Products
which can be tested because the carbon residue test is applied to a wide
D4175 Terminology Relating to Petroleum, Petroleum
variety of petroleum products.
Products, and Lubricants
NOTE 3—The test results are equivalent to Test Method D4530, (see
D4177 Practice for Automatic Sampling of Petroleum and
Fig. X1.2).
NOTE 4—In diesel fuel, the presence of alkyl nitrates such as amyl Petroleum Products
nitrate, hexyl nitrate, or octyl nitrate causes a higher residue value than
D4530 Test Method for Determination of Carbon Residue
observed in untreated fuel, which can lead to erroneous conclusions as to
(Micro Method)
E1 Specification forASTM Liquid-in-GlassThermometers
E133 Specification for Distillation Equipment
1
This test method is under the jurisdiction of ASTM Committee D02 on
3. Terminology
PetroleumProductsandLubricantsandisthedirectresponsibilityofSubcommittee
D02.06 on Analysis of Lubricants. 3.1 Definitions:
Current edition approved Nov. 1, 2005. Published November 2005. Originally
3.1.1 carbon residue, n—theresidueformedbyevaporation
approved in 1924. Last previous edition approved in 2001 as D189-01.
and thermal degradation of a carbon containing material.
In the IP, this test method is under the jurisdiction of the Standardization
D 4175
Committee and is issued under the fixed designation IP 13. The final number
indicatestheyearoflastrevision.ThistestmethodwasadoptedasajointASTM–IP
3.1.2 Discussion—The residue is not composed entirely of
standard in 1964.
carbon but is a coke that can be further changed by carbon
ThisprocedureisamodificationoftheoriginalConradsonmethodandapparatus
for Carbon Test and Ash Residue in Petroleum Lubricating Oils. See Proceedings,
Eighth International Congress of Applied Chemistry, New York, Vol 1, p. 131,
2
September 1912; also Journal of Industrial and Engineering Chemistry, IECHA, For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Vol 4, No. 11, December 1912. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
In 1965, a new Fig. 2 on reproducibility and repeatability combiningASTM and Standards volume information, refer to the standard’s Document Summary page on
IP precision data replaced old Fig.
...
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