ASTM D1483-12(2023)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D1483 − 12 (Reapproved 2023)
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 4. Significance and Use
4.1 The oil absorption value obtained by this test method
1.1 This test method covers the determination of oil absorp-
provides information about the vehicle demand of the pigment
tion of pigments by the Gardner-Coleman procedure.
when it is used in a pigment paste. Oil absorption values can be
1.2 The values stated in SI units are to be regarded as the
used to characterize batches of a given pigment.
standard. The values given in parentheses are for information
4.2 This test method differs from Test Method D281 in that
only.
D281 requires a vigorous rubbing action whereas this test
1.3 This standard does not purport to address all of the
method involves only a gentle stirring and folding of the
safety concerns, if any, associated with its use. It is the
pigment. Because the end points are different, the values
responsibility of the user of this standard to establish appro-
obtained from the two test methods generally differ.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
5. Apparatus and Materials
1.4 This international standard was developed in accor-
5.1 Balance, capable of weighing to 0.01 g.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5.2 Glass Container, round-bottom, having a capacity of
Development of International Standards, Guides and Recom- 1
250 mL ( ⁄2 pt), or a low-form 250 mL beaker.
mendations issued by the World Trade Organization Technical
5.3 Buret, graduated in 0.1 mL divisions.
Barriers to Trade (TBT) Committee.
5.4 Spatula, sharp-edged steel, having a blade 15 mm or
1 3
20 mm by 100 mm ( ⁄2 in. or ⁄4 in. by 4 in.).
2. Referenced Documents
5.5 Linseed Oil, raw, conforming to the following specifi-
2.1 ASTM Standards:
cation:
D281 Test Method for Oil Absorption of Pigments by
Specific Gravity 0.926 – 0.931
Spatula Rub-out
Boiling Point >149 °C
Acid Number 3 ± 1
3. Summary of Test Method
Saponification Value 185 – 196
Iodine Value 170 minimum
3.1 A soft paste is formed by the dropwise addition of
Gardner Color 13 maximum
linseed oil to the gently stirred pigment. The amount of oil
required to form the paste is used to calculate an oil absorption
6. Procedure
value.
6.1 The weight of pigment used should correspond to a
pigment volume of 3.0 mL 6 0.6 mL. Determine the weight
needed by multiplying 3.0 mL 6 0.6 mL by the specific gravity
This test method is under the jurisdiction of ASTM Committee D01 on Paint
of the pigment being tested. For example, a 20 g specimen
and Related Coatings, Materials, and Applications and is the direct responsibility of
normally is used for zinc oxide (3.6 mL × 5.6 g/mL = 20.2 g).
Subcommittee D01.24 on Physical Properties of Liquid Paints & Paint Materials.
Transfer the amount, weighed to 0.01 g, to the glass container.
Current edition approved June 1, 2023. Published June 2023. Originally
approved in 1957. Last previous edition approved in 2016 as D1483 – 12 (2016).
6.2 Add oil from the buret at the rate of about 1 drop per
DOI: 10.1520/D1483-12R23.
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