ASTM D305-84(2003)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D305–84(Reapproved2003)
Standard Test Method for
Solvent-Extractable Material in Black Pigments
This standard is issued under the fixed designation D 305; 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.
1. Scope
1.1 This test method covers the determination of the
solvent-extractable material in black pigments such as carbon
black, lampblack, and bone black.
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 appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
D 329 Specification for Acetone
3. Significance and Use
3.1 Thistestmethodisusedbyblackpigmentproducersand
users for product acceptance.
4. Apparatus
4.1 Extraction Apparatus, consisting of a flask, siphon cup,
and a condenser similar to the apparatus shown in either Fig. 1
or Fig. 2.
FIG. 1 Extraction Apparatus
NOTE 1—A Sophlet apparatus may be used as an alternative.
shown in Fig. 1 is listed below:
4.2 Extraction Thimbles—The thimble must be made of
Fig. 1 Fig. 2
Height 70 mm 62 mm
greaseless paper and be of correct size to fill the selected
Inside diameter 28 mm 22 mm
apparatus.
Outside diameter 30 mm 24 mm
NOTE 2—The recommended thimble size for each of the apparatus 4.3 The thimbles are available in various heights and widths
with two thickness levels, single thickness or double thickness.
Single-thickness thimbles are recommended for this extraction
This test method is under the jurisdiction of ASTM Committee D01 on Paint procedure.
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.31 on Pigment Specifications.
5. Reagents and Material
Current edition approved Oct. 1, 2003. Published October 2003. Originally
5.1 Purity of Reagents—Reagent grade chemicals shall be
approved in 1929. Last previous edition approved in 1984 D 305 – (1999).
Annual Book of ASTM Standards, Vol 06.04. used in all tests. Unless otherwise indicated, it is intended that
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D305–84 (2003)
5.2 Solvent—Acetone and benzene are the most commonly
used solvents (see Specification D 329); however, other sol-
vents may be used as agreed upon.
5.3 Glass Wool.
6. Procedure
6.1 Weight approximately 10 g of pigment (moisture-free)
into a weighed thimble and record the weight to 0.1 g. For
pigments with high apparent density (bone black, iron oxides,
etc.) a 40-g sample is recommended. Plug the open end of the
thimble with glass wool and place in the siphon cup
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