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ASTM D721-02

(Test Method)

Standard Test Method for Oil Content of Petroleum Waxes

Standard Test Method for Oil Content of Petroleum Waxes

SCOPE
1.1 This test method covers the determination of oil in petroleum waxes having a congealing point of 30°C (86°F) or higher as determined in accordance with Test Method D 938, and containing not more than 15 % of oil.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.
Note 1—With some types of waxes, of oil contents greater than 5%, there may be an incompatibility with MEK resulting in the formation of two liquid phases. If this occurs, the method is not applicable to the material under test.
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.

General Information

Status
Historical
Publication Date
09-Aug-2002
ICS
75.140 - Waxes, bituminous materials and other petroleum products
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.10.0A - Physical/Chemical Properties
Current Stage
Ref Project

Relations

Replaces
ASTM D721-97 - Standard Test Method for Oil Content of Petroleum Waxes
Effective Date
10-Aug-2002
Replaced By
ASTM D721-02a - Standard Test Method for Oil Content of Petroleum Waxes
Effective Date
10-Nov-2002
Referred By
ASTM D5442-17(2021) - Standard Test Method for Analysis of Petroleum Waxes by Gas Chromatography
Effective Date
10-Aug-2002

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ASTM D721-02 - Standard Test Method for Oil Content of Petroleum WaxesASTM D721-02 - Standard Test Method for Oil Content of Petroleum Waxes
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ASTM D721-02 - Standard Test Method for Oil Content of Petroleum Waxes
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation:D721–02
Designation: 158/69(85)
Standard Test Method for
1
Oil Content of Petroleum Waxes
This standard is issued under the fixed designation D 721; 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.
This standard has been approved for use by agencies of the Department of Defense.
5
1. Scope meability of Rigid Porous Filters for Laboratory Use
1.1 This test method covers the determination of oil in
3. Summary of Test Method
petroleum waxes having a congealing point of 30°C (86°F) or
3.1 The sample is dissolved in methyl ethyl ketone, the
higher as determined in accordance with Test Method
2 solution cooled to –32°C (–25°F) to precipitate the wax, and
D 938,D 938 and containing not more than 15 % of oil.
filtered. The oil content of the filtrate is determined by
1.2 The values stated in inch-pound units are to be regarded
evaporating the methyl ethyl ketone and weighing the residue.
as the standard. The values in parentheses are for information
only.
4. Significance and Use
NOTE 1—With some types of waxes, of oil contents greater than 5%,
4.1 The oil content of a wax may have significant effects on
there may be an incompatibility with MEK resulting in the formation of
several of its properties, such as strength, hardness, flexibility,
two liquid phases. If this occurs, the method is not applicable to the
scuffresistance,coefficientoffriction,coefficientofexpansion,
material under test.
meltingpoint,andoilstraining.Theimportanceoftheseeffects
1.3 This standard does not purport to address all of the
may be dependent upon the ultimate use of the wax.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 5. Apparatus
priate safety and health practices and determine the applica-
5.1 Filter Stick and Assembly, consisting of a 10-mm
bility of regulatory limitations prior to use.
diameter sintered glass filter stick of 10 to 15 µm maximum
pore diameter as determined by the method in Appendix X1,
2. Referenced Documents
provided with an air pressure inlet tube and delivery nozzle. It
2.1 ASTM Standards:
is provided with a ground-glass joint to fit a 25 by 170-mm test
D 938 Test Method for Congealing Point of Petroleum
tube. The dimensions for a suitable filtration assembly are
3
Waxes, Including Petrolatum
shown in Fig. 1.
4
E1 Specification for ASTM Thermometers
NOTE 2—A metallic filter stick may be employed if desired. A filter
E 128 Test Method for Maximum Pore Diameter and Per-
1
stick made of stainless steel and having a 12.7–mm ( ⁄2-in.) disk of 10 to
15-µm maximum pore diameter, as determined by Test Method
6
E 128E 128, has been found to be satisfactory. The metallic apparatus is
1
inserted into a 25 by 150–mm test tube and held in place by means of a
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee cork.
D02.10 on Properties of Petroleum Wax.
5.2 Cooling Bath, consisting of an insulated box with 25.4
Current edition approved August 10, 2002. Published October 2002. Originally
published as D 721-43T. Last previous edition D 721-97. mm (1-in.) holes in the center to accommodate any desired
In the IP, this method is under the jurisdiction of the Standardization Committee.
This test method was issued as a joint ASTM-IP tentative in 1964.
5
This test method was prepared jointly by the Technical Association of Pulp and Annual Book of ASTM Standards, Vol 14.02.
6
Paper Industry and ASTM International. The sole source of supply of a suitable metal filter stick with designated
This test method has been adopted for use by government agencies to replace porosity G known to the committee at this time is the Pall Trinity Micro Corp.,
Method 5431 of Federal Test Method Standard No. 79lb. Route281,Cortland,NY13045.AlistofUnitedKingdomsupplierscanbeobtained
2
This test method is being used by some laboratories for products of higher oil from the Institute of Petroleum, 61 New Cavendish St., London, W1G 7AR, United
content. Kingdom. If you are aware of alternative suppliers, please provide this information
3
Annual Book of ASTM Standards, Vol 05.01. to ASTM International Headquarters. Your comments will receive careful consid-
4 1
Annual Book of ASTM Standards, Vol 14.03. erationatameetingoftheresponsibletechnicalcommittee ,whichyoumayattend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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