ASTM D1483-12(2016)
(Test Method)Standard Test Method for Oil Absorption of Pigments by Gardner-Coleman Method
Standard Test Method for Oil Absorption of Pigments by Gardner-Coleman Method
SIGNIFICANCE AND USE
4.1 The oil absorption value obtained by this test method provides information about the vehicle demand of the pigment when it is used in a pigment paste. Oil absorption values can be used to characterize batches of a given pigment.
4.2 This test method differs from Test Method D281 in that D281 requires a vigorous rubbing action whereas this test method involves only a gentle stirring and folding of the pigment. Because the end points are different, the values obtained from the two test methods generally differ.
SCOPE
1.1 This test method covers the determination of oil absorption of pigments by the Gardner-Coleman procedure.2
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
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Designation: D1483 − 12 (Reapproved 2016)
Standard Test Method for
Oil Absorption of Pigments by Gardner-Coleman Method
This standard is issued under the fixed designation D1483; 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 U.S. Department of Defense.
1. Scope method involves only a gentle stirring and folding of the
pigment. Because the end points are different, the values
1.1 This test method covers the determination of oil absorp-
2 obtained from the two test methods generally differ.
tion of pigments by the Gardner-Coleman procedure.
5. Apparatus and Materials
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
5.1 Balance, capable of weighing to 0.01 g.
only.
5.2 Glass Container, round-bottom, having a capacity of
1.3 This standard does not purport to address all of the
250 mL ( ⁄2 pt), or a low-form 250-mL beaker.
safety concerns, if any, associated with its use. It is the
5.3 Buret, graduated in 0.1-mL divisions.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 5.4 Spatula, sharp-edged steel, having a blade 15 or 20 by
1 3
bility of regulatory limitations prior to use. 100 mm ( ⁄2 or ⁄4 by 4 in.).
5.5 Linseed Oil, raw, conforming to the following specifi-
2. Referenced Documents
cation:
2.1 ASTM Standards:
Specific Gravity 0.926 – 0.931
D281 Test Method for Oil Absorption of Pigments by
Boiling Point >149°C
Spatula Rub-out Acid Number 3 ± 1
Saponification Value 185 – 196
Iodine Value 170 minimum
3. Summary of Test Method
Gardner Color 13 maximum
3.1 A soft paste is formed by the dropwise addition of
6. Procedure
linseed oil to the gently stirred pigment. The amount of oil
required to form the paste is used to calculate an oil absorption 6.1 The weight of pigment used should correspond to a
pigment volume of 3.0 6 0.6 mL. Determine the weight
value.
needed by multiplying 3.0 6 0.6 mL by the specific gravity of
4. Significance and Use
the pigment being tested. For example, a 20 g specimen
4.1 The oil absorption value obtained by this test method normally is used for zinc oxide (3.6 mL × 5.6 g/mL = 20.2 g).
Transfer the amount, weighed to 0.01 g, to the glass container.
provides information about the vehicle demand of the pigment
when it is used in a pigment paste. Oil absorption values can be
6.2 Add oil from the buret at the rate of about 1 drop per
used to characterize batches of a given pigment.
second, stirring and “folding” the pigment continuously with
4.2 This test method differs from Test Method D281 in that the spatula during the addition. Try to provide dry pigment for
the oil to strike. Do not rub or grind; as the particles of pigment
D281 requires a vigorous rubbing action whereas this test
become wetted, they collect in small lumps that gradually
coalesce. As the coalescence proceeds, reduce the rate of oil
This test method is under the jurisdiction of ASTM Committee D01 on Paint
addition by at least half. The end point is reached when the
and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.24 on Physical Properties of Liquid Paints and Paint Materials.
lumps, with a rolling action from the spatula, collect into
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D1483 − 12 D1483 − 12 (Reapproved 2016)
Standard Test Method for
Oil Absorption of Pigments by Gardner-Coleman Method
This standard is issued under the fixed designation D1483; 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 U.S. Department of Defense.
1. Scope*Scope
1.1 This test method covers the determination of oil absorption of pigments by the Gardner-Coleman procedure.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
2. Referenced Documents
2.1 ASTM Standards:
D281 Test Method for Oil Absorption of Pigments by Spatula Rub-out
3. Summary of Test Method
3.1 A soft paste is formed by the dropwise addition of linseed oil to the gently stirred pigment. The amount of oil required to
form the paste is used to calculate an oil absorption value.
4. Significance and Use
4.1 The oil absorption value obtained by this test method provides information about the vehicle demand of the pigment when
it is used in a pigment paste. Oil absorption values can be used to characterize batches of a given pigment.
4.2 This test method differs from Test Method D281 in that D281 requires a vigorous rubbing action whereas this test method
involves only a gentle stirring and folding of the pigment. Because the end points are different, the values obtained from the two
test methods generally differ.
5. Apparatus and Materials
5.1 Balance, capable of weighing to 0.01 g.
5.2 Glass Container, round-bottom, having a capacity of 250 mL ( ⁄2 pt), or a low-form 250-mL beaker.
5.3 Buret, graduated in 0.1-mL divisions.
1 3
5.4 Spatula, sharp-edged steel, having a blade 15 or 20 by 100 mm ( ⁄2 or ⁄4 by 4 in.).
5.5 Linseed Oil, raw, conforming to the following specification:
Specific Gravity 0.926 – 0.931
Boiling Point >149°C
Acid Number 3 ± 1
Saponification Value 185 – 196
Iodine Value 170 minimum
Gardner Color 13 maximum
This test method is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.24 on Physical Properties of Liquid Paints &and Paint Materials.
Current edition approved Feb. 1, 2012Dec. 1, 2016. Published February 2012December 2016. Originally approved in 1957. Last previous edition approved in 20072012
as D1483 – 95 (2007).D1483 – 12. DOI: 10.1520/D1483-12.10.1520/D1483-12R16.
See Gardner, H. A. and Coleman, R. E., “Oil Absorption of Pigments,” Scientific Section Circular 85, Paint Manufacturers’Manufacturers’ Assoc. of the United States,
February 1920.
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’sstandard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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D1483 − 12 (2016)
6. Procedure
6.1 The weight of pigment used should correspond to a pigment volume of 3.0 6 0.6 mL. Determine th
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