ASTM D5949-01

Standard Test Method for Pour Point of Petroleum Products (Automatic Pressure Pulsing Method)

SCOPE
1.1 This test method covers the determination of pour point of petroleum products by an automatic instrument that applies a controlled burst of nitrogen gas onto the specimen surface while the specimen is being cooled and detects movement of the surface of the test specimen with an optical device.
1.2 This test method is designed to cover the range of temperatures from 57 to +51°C. However, the range of temperatures included in the 1992 interlaboratory test program only covered the temperature range from 39 to +6°C and the range of temperatures included in the 1998 interlaboratory test program was from 51 to 11°C. (see 13.4).
1.3 Test results from this test method can be determined at 1 or 3°C testing intervals.
1.4 This test method is not intended for use with crude oils.Note 1—The applicability of this test method or residual fuel samples has not been verified. For further information on applicability, refer to 13.4.
1.5 The values stated in SI units are regarded as standard.
1.6 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.

General Information

• Status: Historical
• Publication Date: 09-Dec-2001
• ICS: 75.080 - Petroleum products in general
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.07 - Flow Properties

Relations

• Replaces: ASTM D5949-96 - Standard Test Method for Pour Point of Petroleum Products (Automatic Pressure Pulsing Method)
• Effective Date: 10-Dec-2001
• Replaced By: ASTM D5949-01e1 - Standard Test Method for Pour Point of Petroleum Products (Automatic Pressure Pulsing Method)
• Effective Date: 10-Dec-2001
• Referred By: ASTM F3337-19 - Standard Guide for Taking Property and Behavior Measurements on Weathered Fractions of Oil
• Effective Date: 10-Dec-2001
• Referred By: ASTM D3487-16e1 - Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus
• Effective Date: 10-Dec-2001
• Referred By: ASTM D8180-23 - Standard Specification for Rerefined Mineral Insulating Liquid Used in Electrical Apparatus
• Effective Date: 10-Dec-2001
• Referred By: ASTM D8240-22e1 - Standard Specification for Less-Flammable Synthetic Ester Liquids Used in Electrical Apparatus
• Effective Date: 10-Dec-2001
• Referred By: ASTM D7666-12(2019) - Standard Specification for Triglyceride Burner Fuel
• Effective Date: 10-Dec-2001
• Referred By: ASTM D8324-21 - Standard Guide for Selection of Environmentally Acceptable Lubricants for the U.S. Environmental Protection Agency (EPA) Vessel General Permit
• Effective Date: 10-Dec-2001
• Referred By: ASTM D5222-23 - Standard Specification for Less Flammable High Molecular Weight Hydrocarbon Mineral Electrical Insulating Liquids
• Effective Date: 10-Dec-2001
• Referred By: ASTM D2880-23 - Standard Specification for Gas Turbine Fuel Oils
• Effective Date: 10-Dec-2001
• Referred By: ASTM D396-21 - Standard Specification for Fuel Oils
• Effective Date: 10-Dec-2001
• Referred By: ASTM D86-23 - Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure
• Effective Date: 10-Dec-2001
• Referred By: ASTM D6074-15(2022) - Standard Guide for Characterizing Hydrocarbon Lubricant Base Oils
• Effective Date: 10-Dec-2001
• Referred By: ASTM D117-22 - Standard Guide for Sampling, Test Methods, and Specifications for Electrical Insulating Liquids
• Effective Date: 10-Dec-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:D5949–01
Standard Test Method for
Pour Point of Petroleum Products (Automatic Pressure
1
Pulsing Method)
This standard is issued under the fixed designation D5949; 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.
INTRODUCTION
This test method covers an alternative procedure for the determination of pour point of petroleum
products using an automatic apparatus.
1. Scope D4177 Practice for Automatic Sampling of Petroleum and
3
Petroleum Products
1.1 This test method covers the determination of pour point
2.2 IP Standard:
of petroleum products by an automatic instrument that applies
4
IP15 Test Method for Pour Point of Petroleum Products
a controlled burst of nitrogen gas onto the specimen surface
while the specimen is being cooled and detects movement of
3. Terminology
the surface of the test specimen with an optical device.
3.1 Definitions:
1.2 This test method is designed to cover the range of
3.1.1 pour point, n—in petroleum products, the lowest
temperatures from−57 to+51°C. However, the range of tem-
temperature at which movement of the test specimen is
peratures included in the 1992 interlaboratory test program
observed under the prescribed conditions of the test.
only covered the temperature range from −39 to+6°C and the
3.2 Definitions of Terms Specific to This Standard:
range of temperatures included in the 1998 interlaboratory test
3.2.1 no-flow point, n—in petroleum products, the tempera-
program was from −51 to −11°C. (see 13.4).
ture of the test specimen at which a wax crystal structure or
1.3 Test results from this test method can be determined at
viscosity increase, or both, impedes movement of the surface
1 or 3°C testing intervals.
of the test specimen under the conditions of the test.
1.4 This test method is not intended for use with crude oils.
3.2.1.1 Discussion—The no-flow point occurs when, upon
NOTE 1—The applicability of this test method or residual fuel samples
cooling, the formation of wax crystal structures or viscosity
has not been verified. For further information on applicability, refer to
increase,orboth,hasprogressedtothepointwheretheapplied
13.4.
observation device no longer detects movement under the
1.5 The values stated in SI units are regarded as standard.
conditions of the test. The preceding observation temperature,
1.6 This standard does not purport to address all of the
at which flow of the test specimen is last observed, is the pour
safety concerns, if any, associated with its use. It is the
point.
responsibility of the user of this standard to establish appro-
3.2.2 pulse, n—a controlled burst of nitrogen gas of a fixed
priate safety and health practices and determine the applica-
pressure and flow rate sufficient to cause movement on the
bility of regulatory limitations prior to use.
surface of the test specimen without fracturing the wax
structure which may be formed in the specimen.
2. Referenced Documents
3.2.3 Peltier device, n—a solid-state thermoelectric device
2.1 ASTM Standards:
constructed with dissimilar semiconductor materials, config-
2
D97 Test Method for Pour Point of Petroleum Products
ured in such a way that it will transport heat to or away from
D4057 Practice for Manual Sampling of Petroleum and
a test specimen dependent on the direction of electric current
3
Petroleum Products
applied to the device.
4. Summary of Test Method
1
4.1 Afterinsertingthetestspecimenintotheautomaticpour
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
point apparatus, and initiation of the test program, the test
D02.07.0D on Wax Related Viscometric Properties of Fuels and Oils.
Current edition approved Dec. 10, 2001. Published February 2002. Originally
published as D5949–96. Last previous edition D5949–96.
2 4
Annual Book of ASTM Standards, Vol 05.01. AvailablefromInstituteofPetroleum,61NewCavendishSt.,London,England
3
Annual Book of ASTM Standards, Vol 05.02. W1M 8AR.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5949–01
specimenisheatedandthencooledbyaPeltierdeviceatarate 6.2 Theapparatusshallbeequippedwithaspecimencup,an
of 1.5 6 0.1°C/min. At temperature intervals of 1 or 3°C, array of optical detectors, light source, pressure pulsing unit,
dependingontheselectionmadebytheuser,amovingforcein digital display, Peltier device, and a specimen temperature
theformofapressurizedpulseofnitrogengasisimpartedont
...