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ASTM D2319-98

(Test Method)

Standard Test Method for Softening Point of Pitch (Cube-in-Air Method)

Standard Test Method for Softening Point of Pitch (Cube-in-Air Method)

SCOPE
1.1 This test method covers the determination of the softening point above 176°F (80°C) of pitch. Test Method D 3104 gives comparable results.  
1.2 The values stated in inch-pound units are to be regarded as the standard.  
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-Nov-1998
ICS
75.140 - Waxes, bituminous materials and other petroleum products
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.05 - Properties of Fuels, Petroleum Coke and Carbon Material
Current Stage
Ref Project

Relations

Replaced By
ASTM D2319-98(2003) - Standard Test Method for Softening Point of Pitch (Cube-in-Air Method)
Effective Date
01-Nov-2003
Referred By
ASTM D61-15(2019) - Standard Test Method for Softening Point of Pitches (Cube-in-Water Method)
Effective Date
10-Nov-1998
Referred By
ASTM D3104-14a(2018) - Standard Test Method for Softening Point of Pitches (Mettler Softening Point Method)
Effective Date
10-Nov-1998

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ASTM D2319-98 - Standard Test Method for Softening Point of Pitch (Cube-in-Air Method)ASTM D2319-98 - Standard Test Method for Softening Point of Pitch (Cube-in-Air Method)
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ASTM D2319-98 - Standard Test Method for Softening Point of Pitch (Cube-in-Air Method)
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.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.
An American National Standard
Designation: D 2319 – 98
Standard Test Method for
Softening Point of Pitch (Cube-in-Air Method)
This standard is issued under the fixed designation D 2319; 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.
1. Scope 5. Apparatus
1.1 This test method covers the determination of the soft- 5.1 Air Oven —The oven shall be cylindrical, 150 mm (6
ening point above 176°F (80°C) of pitch. Test Method D 3104 in.) in inside diameter by 155 mm (6.2 in.) in height. It shall
gives comparable results. have two 75 mm (3-in.) diameter windows of mica, centered
1.2 The values stated in SI units are to be regarded as the vertically on opposite sides, and shall be fitted with a cover
standard. having a central opening 25 mm (1 in.) in diameter to hold a
1.3 This standard does not purport to address all of the thermometer, and a concentric ring suspended below to support
safety concerns, if any, associated with its use. It is the the hooks with attached specimens. The ring shall be made of
1 1
responsibility of the user of this standard to establish appro- 6mm( ⁄4-in.) brass, shall be 54 mm (2 ⁄8 in.) in outside
priate safety and health practices and determine the applica- diameter, and shall be centrally suspended 30 mm (1.2 in.)
bility of regulatory limitations prior to use. below the cover. The cover shall have two 3 mm (0.12-in.)
holes on a diagonal 50 mm (2 in.) from the center. On the
2. Referenced Documents
bottom of the oven, an inner pan 140 mm (5.6 in.) in diameter
2.1 ASTM Standards:
shall rest on three brass legs 5 mm (0.2 in.) in height fastened
D 61 Test Method for Softening Point of Pitches (Cube-in- to the bottom of the pan to provide an air space between the
Water Method)
pan and the bottom of the oven. The side wall, cover, and pan
D 3104 Test Method for Softening Point of Pitches (Mettler shall be made of 0.7 mm (0.028 in.) thick or 22-gage (BWG)
Softening Point Method)
copper sheet, and the bottom of 0.8 mm (0.032 in.) thick or
D 4296 Practice for Sampling Pitch 21-gage copper.
E 1 Specification for ASTM Thermometers
5.2 Tripod for Use with Gas Burner—The tripod ring shall
be approximately 125 mm (5 in.) in inside diameter so that the
3. Summary of Test Method
oven is supported only on its outer edges. It shall be 200 mm
3.1 Two cubes of pitch, supported on wire hooks, are heated
(8 in.) in height.
in a standardized air oven at a linear rate. The softening point
5.3 Shield for Oven:
is the mean of the temperatures at which the cubes sag
5.3.1 For Use with Electric Heater—The shield shall be
downwards a distance of 60 mm (2.4 in.).
cylindrical, 216 mm or (8.64 in). in inside diameter by 181 mm
or (7 ⁄4 in.) in height. It shall have two 76 mm or (3-in.)
4. Significance and Use
diameter mica windows on opposite sides, positioned to
4.1 Pitch does not go through a solid-liquid phase change
coincide with the windows of the oven when both are placed on
when heated and therefore does not have a true melting point.
the electric heater. It shall be made of 0.7 mm (0.028 in.) thick
As the temperature is raised, pitch softens and becomes less
or 22-gage sheet metal, painted inside and out with aluminum
viscous. The softening point is arbitrarily defined and must be
paint.
determined by a closely controlled method that must be
5.3.2 For Use with Gas Burner—The shield shall be iden-
carefully followed if test results are to be reproducible.
tical with that described in 5.3.1 except that it shall be 375 mm
4.2 This test method is useful in determining the consis-
(15 in.) in height and the windows shall coincide when the
tency of pitch as one element in establishing the uniformity of
shield is standing on the bench and the oven on the tripod
1 1
shipments and sources of supply.
described in 5.2. A door 115 by 115 mm (4 ⁄2by 4 ⁄2 in). shall
be provided at the bottom to give access to the burner.
5.4 Mold —A mold suitable for forming two 12.7 mm
This test method is under the jurisdiction of ASTM Committee D-2 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee ( ⁄2-in.) cubes of pitch, having cylindrical core pins 12 gage
D02.05.OF on Industrial Pitches.
Current edition approved Nov. 10, 1998. Published January 1999. Originally
published as D 2319 – 64 T. Last previous edition D 2319 – 97. Softening point apparatus items may be obtained as a unit on special order from
Annual Book of ASTM Standards, Vol 05.01. Humboldt Manufacturing Co., 7302 W. Agatite Ave., Chicago, IL 60656. All other
Annual Book of ASTM Standards, Vol 05.02. apparatus items described may be obtained from any regular laboratory equipment
Annual Book of ASTM Standards, Vol 14.03. supply house.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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.
D 2319
(2.05 to 2.07 mm) in diameter located in the base plate of the 8.3 Place two cubes of pitch on hooks, as shown in Fig. 1 of
assembly to produce accurately centered suspension holes in Test Method D 61, warming the hooks slightly if necessary.
the cubes. See Fig. 1 of Test Method D 61 for details. The foot of the hook passes through the center of two opposite
5.5 Hooks —Two L-shaped hooks made of 2.06 mm or faces, while the other four shall be at an angle of 45° to the
12-gage copper wire. The foot of the hook shall be 25 mm (1 horizontal. The shaft of the hook shall be 3 to 5 mm (0.1 to 0.2
in.) in length and at a right angle to the upright portion for in.) from the specimen.
insertion into the central hole of the pitch cube. The upright
9. Preparation of Apparatus
portion shall have a partial loop at the top to fit over the support
9.1 Assemble the apparatus in an area free of drafts.
ring, and shall be of the proper length, approximately 50 mm
(2 in.), to position the foot on an imaginary line running 9.2 Ensure that the oven, cover, and pan are clean, bright,
and free of dents, since tarnished or dirty apparatus may
horizontally through the center of the windows.
5.6 Thermometer—ASTM High-Softening Point Thermom- change the apparent softening point. After each determination,
carefully clean the hooks with a solvent for pitch. Avoid
eter, having a range from 30 to 200°C (80 to 400°F), and
conforming to the requirements for Thermometer 16C a
...

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