ASTM D2371-85(2005)
(Test Method)Standard Test Method for Pigment Content of Solvent-Reducible Paints
Standard Test Method for Pigment Content of Solvent-Reducible Paints
SIGNIFICANCE AND USE
This test method is suitable for setting specifications for the pigment content of solvent-reducible paints as well as for monitoring manufacturing quality control.
This test method provides the isolated pigment fraction from solvent-reducible paints that may be used for pigment analysis.
SCOPE
1.1 This test method covers the procedure for the quantitative separation of the vehicle from the pigment in solvent-reducible coatings.
1.2 This test method has been proven to be applicable to the following types of paints: white linseed oil outside house paint, white soya and phthalic alkyd enamel, white linseed o-phthalic alkyd enamel, red lead primer, zinc chromate primer, flat white inside enamel, white epoxy enamel, white vinyl toluene modified alkyd, and white amino modified baking enamel. It is considered to be applicable to most solvent-reducible paints.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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. Specific hazard statements are given in Section .
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D2371–85(Reapproved2005)
Standard Test Method for
Pigment Content of Solvent-Reducible Paints
This standard is issued under the fixed designation D2371; 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 Department of Defense.
1. Scope 4. Apparatus
4.1 Centrifuge, explosion-proof, capable of developing
1.1 This test method covers the procedure for the quantita-
tive separation of the vehicle from the pigment in solvent- 1000 to 2000 g.
reducible coatings.
NOTE 1—The centrifuge should be equipped with a suitable head to
1.2 This test method has been proven to be applicable to the
take the proper size trunnion cups necessary for use of the 90-mLtubes or
following types of paints: white linseed oil outside house paint,
120-mL(4-oz) bottles.Atwo, four, or six-place head can be used with the
white soya and phthalic alkyd enamel, white linseed o-phthalic bottles and an eight-place head can be used with the tubes.
alkyd enamel, red lead primer, zinc chromate primer, flat white
4.2 Centrifuge Tube, 90-mL, heavy-walled. In place of the
inside enamel, white epoxy enamel, white vinyl toluene
90-mL centrifuge tube a 120-mL (4-oz) screw cap bottle with
modified alkyd, and white amino modified baking enamel. It is
vinyl-lined screw cap may be used.
considered to be applicable to most solvent-reducible paints.
4.3 Laboratory Oven, vented and capable of maintaining a
1.3 The values stated in SI units are to be regarded as the
temperature of 105 6 2°C.
standard. The values given in parentheses are for information
4.4 Syringe, 5-mL.
only.
4.5 Water Bath.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Solvents
responsibility of the user of this standard to establish appro-
5.1 Ethyl Ether or Petroleum Ether: (Warning—See 6.1).
priate safety and health practices and determine the applica-
5.2 Extraction Mixture—Mix 10 volumes of ethyl ether, 6
bility of regulatory limitations prior to use. Specific hazard
volumes of benzene or toluene, 4 volumes of methyl alcohol,
statements are given in Section 6.
and 1 volume of acetone (Warning—See 6.2, 6.3, and 6.4).
2. Referenced Documents
6. Hazards
2.1 ASTM Standards:
6.1 Ethyl Ether and Petroleum Ether— Flammable. Vapor
D2698 Test Method for Determination of the Pigment
isharmful.Maybefatalifinhaledorswallowed.Useonlywith
Content of Solvent-Reducible Paints by High-Speed Cen-
adequate ventilation.Avoid prolonged contact with skin.Avoid
trifuging
contact with flame, hot surface, or sparks. Do not get in eyes,
on skin, or on clothing. Refer to suppliers’ Material Safety
3. Significance and Use
Data Sheet.
3.1 This test method is suitable for setting specifications for
6.2 Acetone—Flammable. Vapor is harmful. May be fatal if
the pigment content of solvent-reducible paints as well as for
inhaled or swallowed. Use only with adequate ventilation.
monitoring manufacturing quality control.
Avoid prolonged contact with skin. Avoid contact with flame,
3.2 This test method provides the isolated pigment fraction
hot surface, or sparks. Do not get in eyes, on skin, or on
from solvent-reducible paints that may be used for pigment
clothing. Refer to suppliers’ Material Safety Data Sheet.
analysis.
6.3 Methyl Alcohol—Flammable. May be fatal or cause
blindness if swallowed. Cannot be made nonpoisonous. Harm-
This test method is under the jurisdiction of ASTM Committee D01 on Paint ful if inhaled. Keep away from heat, sparks, or open flame.
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
Current edition approved Jan. 1, 2005. Published February 2005. Originally
approved in 1965. Last previous edition approved in 1999 as D2371 – 85 (1999). The sole source of supply of bottles and caps, Cat. No. S9185C, 4-oz bottle,
DOI: 10.1520/D2371-85R05. known to the committee at this time is Sargent Welch Scientific, 7300 N. Linder
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Ave., Skokie, IL60076. If you are aware of alternative suppliers, please provide this
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM information to ASTM International Headquarters. Your comments will receive
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