ASTM D127-87(1999)

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An American National Standard
Designation: D 127 – 87 (Reapproved 1999) Technical Association of Pulp and Paper Industry
Tentative Method T 634ts-64
Designation: 133/79 (87)
Standard Test Method for
Drop Melting Point of Petroleum Wax Including Petrolatum
This standard is issued under the fixed designation D 127; 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.
This test method is sponsored jointly by the Technical Association of Pulp and Paper Industry and the American Society for Testing and
Materials.
This test method was adopted as a joint ASTM-IP standard in 1964.
This test method has been adopted for use by government agencies to replace Method 1401 of Federal Test Method Standard No 79lb.
1. Scope E 1 Specification for ASTM Thermometers
1.1 This test method covers the determination of the drop
3. Definition
melting point of petroleum wax. It is used primarily for
3.1 drop melting point of petroleum wax—The temperature
petrolatums and other microcrystalline wax.
at which material becomes sufficiently fluid to drop from the
NOTE 1—Additional methods used for petroleum waxes are Test
thermometer used in making the determination under definite
Method D 87 and Test Method D 938. Results obtained may differ,
prescribed conditions.
depending on the method used. For pharmaceutical petrolatum, Test
Method D 127 usually is used.
4. Summary of Test Method
1.2 The values stated in SI units are to be regarded as the
4.1 Specimens are deposited on two thermometer bulbs by
standard. The values in parentheses are for information only.
dipping chilled thermometers into the sample. The thermom-
1.3 This standard does not purport to address all of the
eters bearing the specimens are placed in test tubes and heated
safety concerns, if any, associated with its use. It is the
by means of a water bath until the specimens melt and the first
responsibility of the user of this standard to establish appro-
drop falls from each thermometer bulb. The average of the
priate safety and health practices and determine the applica-
temperatures at which these drops fall is the drop melting point
bility of regulatory limitations prior to use.
of the sample.
2. Referenced Documents
5. Significance and Use
2.1 ASTM Standards:
5.1 Melting point is a wax property that is of interest to most
D 87 Test Method for Melting Point of Petroleum Wax
wax consumers. It can be an indication of the performance
(Cooling Curve)
properties of the wax. Drop melting point, Test Method D 127,
D 938 Test Method for Congealing Point of Petroleum
is often used to measure the melting characteristics of petro-
Waxes, Including Petrolatum
latums and other high viscosity petroleum waxes.
6. Apparatus
6.1 Test Tubes—Standard test tubes, 25 mm (1 in.) in
This test method is under the jurisdiction of ASTM Committee D-2 on
outside diameter and 150 mm (6 in.) long. The test tubes shall
Petroleum Products and Lubricantsand is the direct responsibility of subcommittee
D02.10 on Properties of Petroleum Wax. be supplied with corks grooved at the sides to permit air
In the IP, this method is under the jurisdiction of Standardization Committee.
circulation and bored in the exact center to receive the
Current edition approved Oct. 30, 1987. Published December 1987. Originally
thermometer.
published as D 127 – 22. Last previous edition D 127 – 63 (1982).
6.2 Bath—A transparent container of not less than 1500-mL
In 1963, the title, scope, and definition were changed to define the determination
of “drop melting point.’’ Sections on procedure, report, and precision were revised,
capacity, that will permit the immersion of the test tubes to a
and a new section on significance was added.
In 1964, minor editorial changes and additions to this method were made for its
publication as a joint ASTM-IP standard.
2 3
Annual Book of ASTM Standards, Vol 05.01. Annual Book of ASTM Standards, Vol 14.03.
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D 127
depth of at least 100 mm and still leave a depth of 15 mm of thermometer. Record in each case the temperature at which the
water below the bottoms of the test tubes. first drop falls
...