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ASTM D87-04

(Test Method)

Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)

Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)

SCOPE
1.1 This test method covers the determination of the melting point (cooling curve) of petroleum wax. It is unsuitable for waxes of the petrolatum group, microcrystalline waxes, or blends of such waxes with paraffin wax or scale wax. Note 1For additional methods used for testing petroleum waxes, see Test Method D 127 and Test Method D 938. Results may differ, depending on the method used. For pharmaceutical petrolatum, Test Method D 127 usually is used.
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
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
31-Oct-2004
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

Replaced By
ASTM D87-07 - Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)
Effective Date
01-Feb-2007

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ASTM D87-04 - Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)ASTM D87-04 - Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)
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ASTM D87-04 - Standard Test Method for Melting Point of Petroleum Wax (Cooling Curve)
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D87–04 Technical Association of Pulp
and Paper Industry
Standard Method T 630m-61
Method 1402-Federal Test
Method Standard No. 791b
British Standard 4695
Designation: 55/77(83)
Standard Test Method for
1
Melting Point of Petroleum Wax (Cooling Curve)
ThisstandardisissuedunderthefixeddesignationD 87;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (ε) indicates an editorial change since the last revision or reapproval.
NOTE 2—The so-called “American Melting Point” is arbitrarily 1.65°C
1. Scope*
(3°F) above the Melting Point (Cooling Curve) of Petroleum Wax.
1.1 Thistestmethodcoversthedeterminationofthemelting
point (cooling curve) of petroleum wax. It is unsuitable for
4. Summary of Test Method
waxes of the petrolatum group, microcrystalline waxes, or
4.1 A specimen of molten wax in a test tube fitted with a
blends of such waxes with paraffin wax or scale wax.
thermometer is placed in an air bath, which in turn is
NOTE 1—For additional methods used for testing petroleum waxes, see surrounded by a water bath held at 16 to 28°C (60 to 80°F).As
TestMethodD 127andTestMethodD 938.Resultsmaydiffer,depending
the molten wax cools, periodic readings of its temperature are
on the method used. For pharmaceutical petrolatum, Test Method D 127
taken. When solidification of the wax occurs, the rate of
usually is used.
temperature decreases, yielding a plateau in the cooling curve.
1.2 The values stated in SI units are to be regarded as the
The temperature at that point is recorded as the melting point
standard. The values in parentheses are for information only.
(cooling curve) of the sample.
1.3 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5.1 Melting point (cooling curve) is a test that is widely
priate safety and health practices and determine the applica- used by wax suppliers and consumers. it is particularly applied
bility of regulatory limitations prior to use.
to petroleum waxes that are rather highly paraffinic or crystal-
line in nature. A plateau occurs with specimens containing
2. Referenced Documents
appreciable amounts of hydrocarbons that crystallize at the
2
2.1 ASTM Standards:
same temperature, giving up heat of fusion, thus temporarily
D 127 Test Method for Drop Melting Point of Petroleum
retarding the cooling rate. In general, petroleum waxes with
Wax, Including Petrolatum
large amounts of non-normal hydrocarbons or with amorphous
D 938 Test Method for Congealing Point of Petroleum
solid forms will not show the plateau.
Waxes, Including Petrolatum
6. Apparatus
E1 Specification forASTM Liquid-in-Glass Thermometers
6.1 The necessary apparatus is described in Annex A1.
3. Terminology
7. Test Specimen
3.1 Definition:
3.1.1 melting point (cooling curve) of petroleum wax— 7.1 Obtain a sample of wax representative of the shipment
temperature at which melted petroleum wax first shows a
to be tested. From each test unit obtain a portion of wax
minimum rate of temperature change when allowed to cool weighing at least 25 g for each melting point determination.
under prescribed conditions.
8. Procedure
8.1 Support the air bath in its proper position in the water
1
This test method is under the jurisdiction of ASTM Committee D02 on
1
bath.Fillthewaterbathtowithin13mm( ⁄2in.)ofthetopwith
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
water at a temperature of 16 to 28°C (60 to 80°F). The bath
D02.10 on Properties of Petroleum Wax.
In the IP, this test method is under the jurisdiction of the Standardization
temperature is kept within these limits throughout the test.
Committee. This test method was adopted as a joint ASTM-IP standard in 1966.
8.2 Heat the wax sample to at least 8°C (15°F) above its
Current edition approved Nov. 1, 2004. Published November 2004. Originally
expected melting point (see Note 3). To heat the wax sample
approved in 1921. Last previous edition approved in 1999 as D 87–87(1999).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*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 ----------------------
D87–04
use a suitable container in an oven or water bath which is held 9.2 Report the r
...

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