ASTM D5773-20

Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels (Constant Cooling Rate Method)

SIGNIFICANCE AND USE
5.1 The cloud point of petroleum products and biodiesel fuels is an index of the lowest temperature of their utility for certain applications. Wax crystals of sufficient quantity can plug filters used in some fuel systems.  
5.2 Petroleum blending operations require a precise measurement of the cloud point.  
5.3 This test method can determine the temperature of the test specimen at which wax crystals have formed sufficiently to be observed as a cloud with a resolution of 0.1 °C.  
5.4 This test method provides results that are equivalent to Test Method D2500.
Note 1: This is based on the Test Method D2500 equivalent cloud point in which the 0.1 °C result is rounded to the next lower integer.  
5.5 This test method determines the cloud point in a shorter period of time than Test Method D2500.
Note 2: In cases of samples with cloud points near ambient temperatures, time savings may not be realized.  
5.6 This test method eliminates most of the operator time required of Test Method D2500.  
5.7 This test method does not require the use of a mechanical refrigeration apparatus.
Note 3: In certain cases of high ambient temperature, a source of cooling water may be required to measure low-temperature cloud points (see 7.1).
SCOPE
1.1 This test method covers the determination of the cloud point of petroleum products and biodiesel fuels that are transparent in layers 40 mm in thickness by an automatic instrument using a constant cooling rate.  
1.2 This test method covers the range of temperatures from −60 °C to +49 °C with temperature resolution of 0.1 °C, however, the range of temperatures included in the 1997 interlaboratory cooperative test program only covered the temperature range of –56 °C to +34 °C.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-May-2020
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.07 - Flow Properties

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
Designation: D5773 − 20
Designation: IP 446/09
Standard Test Method for
Cloud Point of Petroleum Products and Liquid Fuels
1
(Constant Cooling Rate Method)
This standard is issued under the fixed designation D5773; 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.
INTRODUCTION
This test method describes an alternative procedure for the determination of cloud point of
petroleum productsTest MethodD2500/IP219 using an automatic apparatus.The temperature results
from this test method have been found to be equivalent to Test Method D2500/IP 219. When
specification requires Test Method D2500/IP 219, do not substitute this test method or any other
method without obtaining comparative data and agreement from the specifier.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers the determination of the cloud
D2500Test Method for Cloud Point of Petroleum Products
point of petroleum products and biodiesel fuels that are
and Liquid Fuels
transparent in layers 40mm in thickness by an automatic
D4057Practice for Manual Sampling of Petroleum and
instrument using a constant cooling rate.
Petroleum Products
1.2 This test method covers the range of temperatures from
D4177Practice for Automatic Sampling of Petroleum and
−60°C to +49°C with temperature resolution of 0.1°C,
Petroleum Products
however, the range of temperatures included in the 1997
3
2.2 Energy Institute Standard:
interlaboratory cooperative test program only covered the
IP 219Test Method for Cloud Point of Petroleum Products
temperature range of –56°C to +34°C.
IP 446Determination of the Cloud Point of Petroleum
1.3 The values stated in SI units are to be regarded as
Products—Automatic Constant Cooling Rate Method
standard. No other units of measurement are included in this
standard.
3. Terminology
1.4 This standard does not purport to address all of the
3.1 Definitions:
safety concerns, if any, associated with its use. It is the
3.1.1 biodiesel, n—fuel comprised of mono-alkyl esters of
responsibility of the user of this standard to establish appro-
long chain fatty acids derived from vegetable oils or animal
priate safety, health, and environmental practices and deter-
fats, designated B100.
mine the applicability of regulatory limitations prior to use.
3.1.1.1 Discussion—Biodiesel is typically produced by a
1.5 This international standard was developed in accor-
reactionofavegetableoiloranimalfatwithanalcoholsuchas
dance with internationally recognized principles on standard- methanol or ethanol in the presence of a catalyst to yield
ization established in the Decision on Principles for the
mono-alkylestersandglycerin,whichisremoved.Thefinished
Development of International Standards, Guides and Recom-
biodiesel derives approximately 10% of its mass from the
mendations issued by the World Trade Organization Technical
reacted alcohol. The alcohol used in the reaction may or may
Barriers to Trade (TBT) Committee.
not come from renewable resources.
1 2
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, Liquid Fuels, and Lubricants and is the direct responsibility of contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Subcommittee D02.07 on Flow Properties. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved June 1, 2020. Published June 2020. Originally the ASTM website.
ɛ1 3
approved in 1995. Last previous edition approved in 2017 as D5773–17 . DOI: Available from Energy Institute, 61 New Cavendish St., London, WIG 7AR,
10.1520/D5773-20. U.K., http://www.energyinst.org.uk.
*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

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D5773 − 20
3.1.2 biodiesel blend, n—blend of biodiesel fuel with diesel a similar format to Test Method D2500, then this calculation
fuels and fuel oils. canbeperformed.Someapparatuscanperformthiscalculation
automatically.
3.1.2.1 Discussion—In the abbreviation, BXX, the XX rep-
resents the volume percentage of biodiesel fuel in the blend.
4. Summary of Test Method
3.1.3 cloud point, n—in petroleum products and biodiesel
4.1 A prescribed specimen (11.5) is cooled by a Peltier
fuels, the temperature of a liquid specimen when the smallest
device (A1.1) at a constant rate of 1.5°C⁄min 6 0.1°C⁄min
observable cluster of wax crystals first occurs upon co
...

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: D5773 − 17 D5773 − 20
Designation: IP 446/09
Standard Test Method for
Cloud Point of Petroleum Products and Liquid Fuels
1
(Constant Cooling Rate Method)
This standard is issued under the fixed designation D5773; 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
ε NOTE—Subsection 13.1.3 was revised editorially in September 2017.
INTRODUCTION
This test method describes an alternative procedure for the determination of cloud point of
petroleum products Test Method D2500/IP 219 using an automatic apparatus. The temperature results
from this test method have been found to be equivalent to Test Method D2500/IP 219. When
specification requires Test Method D2500/IP 219, do not substitute this test method or any other
method without obtaining comparative data and agreement from the specifier.
1. Scope*
1.1 This test method covers the determination of the cloud point of petroleum products and biodiesel fuels that are transparent
in layers 40 mm in thickness by an automatic instrument using a constant cooling rate.
1.2 This test method covers the range of temperatures from −60 °C to +49 °C with temperature resolution of 0.1 °C, however,
the range of temperatures included in the 1997 interlaboratory cooperative test program only covered the temperature range of
–56 °C to +34 °C.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D2500 Test Method for Cloud Point of Petroleum Products and Liquid Fuels
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
3
2.2 Energy Institute Standard:
IP 219 Test Method for Cloud Point of Petroleum Products
IP 446 Determination of the Cloud Point of Petroleum Products—Automatic Constant Cooling Rate Method
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 May 1, 2017June 1, 2020. Published May 2017June 2020. Originally approved in 1995. Last previous edition approved in 20152017 as
ɛ1
D5773 – 15a.D5773 – 17 . DOI: 10.1520/D5773-17E01. 10.1520/D5773-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Energy Institute, 61 New Cavendish St., London, WIG 7AR, U.K., http://www.energyinst.org.uk.
*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 ----------------------
D5773 − 20
3. Terminology
3.1 Definitions:
3.1.1 biodiesel, n—a fuel comprised of mono-alkyl esters of long-chain long chain fatty acids derived from vegetable oils or
animal fats, designated B100.
3.1.1.1 Discussion—
Biodiesel is typically produced by a reaction of a vegetable oil or animal fat with an alcohol such as methanol or ethanol in the
presence of a catalyst to yield mono-esters and glycerin. The fuel typically may contain up to 14 different types of fatty acids that
are chemically transformed into fatty acid methyl esters (FAME).mono-alkyl esters and glycerin, which is removed. The finished
biodiesel derives approximately 10 % of its mass from the reacted alcohol. The alcohol used in the reaction may or may not come
from renewable resources.
3
...