ASTM D153-84(2003)
(Test Method)Standard Test Methods for Specific Gravity of Pigments
Standard Test Methods for Specific Gravity of Pigments
SCOPE
1.1 These test methods cover three procedures for determining the specific gravity of pigments, as follows:
Test Method A—For Routine Testing of Several Samples Simultaneously.
Test Method B—For Tests Requiring Greater Accuracy than Test Method A.
Test Method C—For Rapid and Accurate Testing of Single Samples.
1.2 The specific gravity value obtained by these procedures may be used with the weight of a dry pigment to determine the volume occupied by the pigment in a coating formulation.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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. For specific hazard statements, see Sections 5, 11, and 15.
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Designation: D 153 – 84 (Reapproved 2003)
Standard Test Methods for
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Specific Gravity of Pigments
This standard is issued under the fixed designation D 153; 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 standard has been approved for use by agencies of the Department of Defense.
NOTE 1—The Weld type with the cap seal on the outside of the neck of
1. Scope
the bottle is preferred because there is less danger of trapping air just
1.1 These test methods cover three procedures for determin-
under the capillary tube than with types having the ground glass seal on
ing the specific gravity of pigments, as follows:
the inside of the neck.
Test Method A—For Routine Testing of Several Samples
4.2 Water Bath, maintained at 25 6 0.5°C and equipped
Simultaneously.
with a stirring device.
Test Method B—For Tests Requiring Greater Accuracy than
4.3 Manometer, open- or closed-tube (see Part f of the
Test Method A.
apparatus for Test Method C), made of glass tubing 6 mm in
Test Method C—For Rapid and Accurate Testing of Single
diameter, fitted with rubber pressure tubing attached to a
Samples.
T-joint leading to the desiccator and the pump. For the
1.2 The specific gravity value obtained by these procedures
open-tube type 860 mm of mercury shall be used. The
may be used with the weight of a dry pigment to determine the
difference in levels of the mercury in the manometer when the
volume occupied by the pigment in a coating formulation.
system is in operation, subtracted from the barometer reading
1.3 The values stated in SI units are to be regarded as the
taken at the same time, shall be considered the absolute
standard. The values given in parentheses are for information
pressure of the system in millimetres of mercury.
only.
4.4 Desiccator, glass, constructed with heavy walls to
1.4 This standard does not purport to address all of the
withstand a vacuum of one atmosphere, and with an opening at
safety concerns, if any, associated with its use. It is the
the side.
responsibility of the user of this standard to establish appro-
4.5 VacuumPumps—Alaboratorywatervacuum-typepump
priate safety and health practices and determine the applica-
(Note 2), to remove the greater portion of air in the desiccator,
bility of regulatory limitations prior to use. For specific hazard
and an oil vacuum-type pump, motor-driven, and capable of
statements, see Sections 5, 11, and 15.
reducing the absolute pressure of the system to 3 mm.
2. Referenced Documents
NOTE 2—The water vacuum pump may be omitted if the rate of
evacuation with the oil pump can be controlled so as to avoid a rapid
2.1 ASTM Standards:
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ebullition of entrapped air and possible loss of specimen.
D 1193 Specification for Reagent Water
4.6 Thermometer, having a range from 0 to 60°C, and
3. Purity of Reagents
graduated in 0.1°C divisions.
3.1 PurityofWater—Referencetowatershallbeunderstood
4.7 WeighingBottle, wide-mouth cylindrical glass (about 30
to mean reagent water as defined by Type II of Specification
mm in height and 70 mm in diameter), provided with a
D 1193.
ground-glass stopper.
4.8 Immersion Liquid—Kerosine has been found to be a
TEST METHODA—FOR ROUTINE TESTING OF
good wetting vehicle for most pigments, and shall be used
SEVERALSAMPLES SIMULTANEOUSLY
generally as the immersion liquid. Refined, white kerosine of
narrow evaporation and boiling range shall be used.With some
4. Apparatus and Materials
pigments that are not wetted well with kerosine, other immer-
4.1 Pycnometer—A pycnometer (Note 1) having a 50-mL
sion liquids such as glycerin, ethylene glycol, tetrahydronaph-
capacity.
thalene, etc., may be substituted. The liquid must have a low
evaporation rate and narrow boiling range, and the same
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procedure shall be followed as with kerosine. Water is not a
These test methods are under the jurisdiction of ASTM Committee D01 on
Paint and Related Coatings, Materials, and Applications, and are the direct preferred liquid because of the possibility of frothing.
responsibility of Subcommittee D01.31 on Pigment Specifications.
Current edition approved May 10, 2003. Published June 2003. Originally
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approved in 1923. Last previous edition approved in 1984 as D 153 – 84 (1996) .
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Annual Book of ASTM Standards, Vol 11.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 153 – 84 (2003)
5. Hazards taking care to add a sufficient quantity to prevent air bubbles
wherethepycnometerisclosed,andpermittocometoconstant
5.1 Before a desiccator i
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