ASTM D5773-02

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: D 5773 – 02
Designation: 446/99
Standard Test Method for
Cloud Point of Petroleum Products (Constant Cooling Rate
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Method)
This standard is issued under the fixed designation D 5773; 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.
INTRODUCTION
This test method describes an alternative procedure for the determination of cloud point of
petroleum products Test Method D 2500/IP219 using an automatic apparatus. The temperature results
from this test method have been found to be equivalent to Test Method D 2500/IP219. When
specification requires Test Method D 2500/IP219, do not substitute this test method or any other
method without obtaining comparative data and agreement from the specifier.
1. Scope 2.2 IP Standard:
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IP219 Test Method for Cloud Point of Petroleum Products
1.1 This test method describes the determination of the
cloud point of petroleum products and biodiesel fuels that are
3. Terminology
transparent in layers 40 mm in thickness by an automatic
3.1 Definitions:
instrument using a constant cooling rate.
3.1.1 cloud point, n—in petroleum products and biodiesel
1.2 This test method covers the range of temperatures
fuels, the temperature of a liquid specimen when a wax crystal
from −40°C to +49°C with temperature resolution of 0.1°C.
structure that is similar in appearance to a cloud is formed upon
1.3 The values stated in SI units are to be regarded as the
cooling under prescribed conditions.
standard. The values given in parentheses are for information
3.1.1.1 Discussion—The cloud point appears when the tem-
only.
perature of the specimen is low enough to cause wax crystals
1.4 This standard does not purport to address all of the
to precipitate. In a homogeneous liquid, the cloud is always
safety concerns, if any, associated with its use. It is the
noted first at the location in the specimen where the specimen
responsibility of the user of this standard to establish appro-
temperature is the lowest. This is typically at the lower portion
priate safety and health practices and determine the applica-
of the test jar when using the apparatus described in Test
bility of regulatory limitations prior to use.
Method D 2500.
2. Referenced Documents 3.1.2 biodiesel, n—a fuel comprised of mono-alkyl esters of
long-chain fatty acids derived from vegetable oils or animal
2.1 ASTM Standards:
fats, designated B100.
D 2500 Test Method for Cloud Point of Petroleum Prod-
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3.1.2.1 Discussion—Biodiesel is typically produced by a
ucts
reaction of vegetable oil or animal fat with an alcohol such as
D 4057 Practice for Manual Sampling of Petroleum and
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methanol or ethanol in the presence of a catalyst to yield
Petroleum Products
mono-esters and glycerin. The fuel typically may contain up to
D 4177 Practice for Automatic Sampling of Petroleum and
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14 different types of fatty acids that are chemically transformed
Petroleum Products
into fatty acid methyl esters (FAME).
3.1.3 biodiesel blend, n—a blend of biodiesel fuel with
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This test method is under the jurisdiction of ASTM Committee D02 on petroleum-based diesel fuel designated BXX, where XX is the
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
volume percentage of biodiesel.
D02.07 on Flow Properties.
Current edition approved April 10, 2002. Published July 2002. Originally
published as D 5773–95. Last previous edition D 5773–95.
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Annual Book of ASTM Standards, Vol 05.01. Available from the Institute of Petroleum, 61 New Cavendish Street, London,
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Annual Book of ASTM Standards, Vol 05.02. England WIM 8AR.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D5773–02
3.2 Description of Terms Specific to This Standard: 5.6 This test method eliminates most of the operator time
required of Test Method D 2500.
3.2.1 automatic cloud point, n—the temperature of a speci-
men, when the appearance of the cloud is determined under the 5.7 This test method does not require the use of a mechani-
conditions of this test method. cal refrigeration apparatus.
3.2.1.1 Discussion—The cloud point in this test method is
NOTE 3—In certain cases of high ambient temperature, a source of
determined by an automatic instrument using an optical device
cooling water may be required to measure low temperature cloud
...