ASTM D97-96a
(Test Method)Standard Test Method for Pour Point of Petroleum Products
Standard Test Method for Pour Point of Petroleum Products
SCOPE
1.1 This test method is intended for use on any petroleum product. A procedure suitable for black specimens, cylinder stock, and nondistillate fuel oil is described in . A procedure for testing the fluidity of a residual fuel oil at a specified temperature is described in the appendix.
1.2 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 hazard statements, see Section 7.
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An American National Standard
Designation: D 97 – 96a
Designation: 15/95
Standard Test Method for
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Pour Point of Petroleum Products
This standard is issued under the fixed designation D 97; 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.
This test method has been adopted for use by government agencies to replace Method 201 of Federal Test Methods Standard No. 791b,
and Method 4452 of Federal Test Method Standard No. 141A.
This test method was adopted as a joint ASTM-IP Standard in 1965.
1. Scope E 77 Test Method for Inspection and Verification of Ther-
7
mometers
1.1 This test method is intended for use on any petroleum
2 2.2 IP Standards:
product. A procedure suitable for black specimens, cylinder
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Specifications for IP Standard Thermometers
stock, and nondistillate fuel oil is described in 7.8. A procedure
for testing the fluidity of a residual fuel oil at a specified
3. Terminology
temperature is described in the appendix.
3.1 Definitions:
1.2 This standard does not purport to address all of the
3.1.1 black oil, n—lubricant containing asphaltic materials.
safety concerns, if any, associated with its use. It is the
Black oils are used in heavy-duty equipment applications, such
responsibility of the user of this standard to establish appro-
as mining and quarrying, where extra adhesiveness is desired.
priate safety and health practices and determine the applica-
3.1.2 cylinder stock, n—lubricant for independently lubri-
bility of regulatory limitations prior to use. For specific hazard
cated engine cylinders, such as those of steam engines and air
statements, see Section 6.
compressors. Cylinder stock are also used for lubrication of
2. Referenced Documents valves and other elements in the cylinder area.
3.1.3 residual fuel, n—a liquid fuel containing bottoms
2.1 ASTM Standards:
remaining from crude distillation or thermal cracking; some-
D 117 Guide to Test Methods and Specifications for Elec-
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times referred to as heavy fuel oil.
trical Insulating Oils of Petroleum Origin
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3.1.3.1 Discussion—Residual fuels comprise Grades 4, 5,
D 396 Specification for Fuel Oils
and 6 fuel oils, as defined in Specification D 396.
D 1659 Test Method for Maximum Fluidity Temperature of
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Residual Fuel Oil
4. Summary of Test Method
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D 2500 Test Method for Cloud Point of Petroleum Oils
4.1 After preliminary heating, the sample is cooled at a
D 3245 Test Method for Pumpability of Industrial Fuel
6 specified rate and examined at intervals of 3°C for flow
Oils
7 characteristics. The lowest temperature at which movement of
E 1 Specification for ASTM Thermometers
the specimen is observed is recorded as the pour point.
5. Significance and Use
1
This test method is under the jurisdiction of ASTM Committee D-2 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee 5.1 The pour point of a petroleum specimen is an index of
D02.07 on Flow Properties.
the lowest temperature of its utility for certain applications.
Current edition approved Nov. 10, 1996. Published January 1997. Originally
published as D 97 – 27. In 1927, revised and replaced former D 47. Last previous
6. Apparatus
edition D 97 – 96.
In the IP, this test method is under the jurisdiction of the Standardization 6.1 Test Jar, cylindrical, of clear glass, flat bottom, 33.2 to
Committee.
34.8-mm outside diameter, and 115 to 125 mm in height. The
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Statements defining this test and its significance when applied to electrical
inside diameter of the jar can range from 30.0 to 32.4 mm,
insulating oils of mineral origin will be found in Guide D 117.
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within the constraint that the wall thickness be no greater than
Annual Book of ASTM Standards, Vol 10.03.
4
Annual Book of ASTM Standards, Vol 05.01.
5
Discontinued; see 1984 Annual Book of ASTM Standards, Vol 05.01.
6 8
Annual Book of ASTM Standards, Vol 05.02 Methods for Analysis and Testing, IP Standards for Petroleum and its Products,
7
Annual Book of ASTM Standards, Vol 14.03. Part I, Vol 2.
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D97
1.6 mm. The jar shall have a line to indicate a sample height 54 6.7 Bath or Baths, maintained at prescribed temperatures
6 3 mm above the inside bottom. See Fig. 1. with a firm support to hold the jacket vertical. The required
6.2 Thermometers, having the following ranges and con- bath temperatures may be obtained by refrigeration if avail-
forming to the requirements prescribed in Specification E 1 for able, otherwise by suitable fre
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