ASTM D716-86(2007)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D716 − 86 (Reapproved 2007)
StandardTest Methods for
Evaluating Mica Pigment
This standard is issued under the fixed designation D716; 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.
1. Scope (1 in.) in diameter. It may be found necessary to replace the top
glassbafflewithonethatislongertoensurethatallofthesifted
1.1 These test methods cover the evaluation of mica pig-
mica is caught.
ment.
5. Procedure
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 Transfer convenient quantities of the mica pigment to
only.
the funnel of the modified volumeter and brush the pigment
1.3 This standard does not purport to address all of the through the screen with a camel-hair brush until the receiver is
safety concerns associated with its use. It is the responsibility slightly more than full. Scrape off the excess and weigh the
of the user of this standard to establish appropriate safety and pigment. Care must be taken not to jar the apparatus during the
health practices and determine the applicability of regulatory procedure.
limitations prior to use.
6. Calculation
2. Referenced Documents
6.1 Calculate the apparent density of the mica pigment and
convert to pounds per cubic foot.
2.1 ASTM Standards:
D185 Test Methods for Coarse Particles in Pigments
7. Report
D280 Test Methods for Hygroscopic Moisture (and Other
7.1 Report the mean of three determinations as the apparent
Matter Volatile Under the Test Conditions) in Pigments
density of the mica pigment.
E11 Specification for Woven Wire Test Sieve Cloth and Test
Sieves
8. Reproducibility of Results
3. Significance and Use 8.1 The mean of the three determinations should check
within 5 %.
3.1 These test methods are used to determine apparent
density of mica pigments and the grit level.This information is
MOISTURE AND OTHER VOLATILE MATTER
significant to the user of mica pigments for inclusion in
9. Procedure
coatings.
9.1 Determine the moisture and other volatile matter in
APPARENT DENSITY
accordance with Test Methods D280.
4. Apparatus
GRIT
4.1 Volumeter—A Scott volumeter or similar apparatus
10. Apparatus
modified as follows: The screen used shall conform to the
requirements of a No. 40 (425-µm) sieve as prescribed in
10.1 Beaker, 600-mL, low-form.
Specification E11. The funnel below the screen shall be
10.2 Metal Tubing—An L-shape metal tube (Fig. 1) 6.4 mm
replaced by a conical funnel having a bottom opening 25 mm
( ⁄4 in.) in outside diameter with a foot 25 mm (1 in.) in length.
The foot of the tube shall be drilled to 4.4 mm (0173 in.) (No.
1 1
These test methods are under the jurisdiction of ASTM Committee D01 on
17 drill) in inside diameter for a depth of 12.7 mm ( ⁄2 in.).The
Paint and Related Coatings, Materials, and Applications and are the direct
tube shall be placed in the beaker with the long arm in the
responsibility of Subcommittee D01.31 on Pigment Specifications.
vertical position, and the foot of the Lparallel to the bottom of
Current edition approved Nov. 1, 2007. Published November 2007. Originally
the beaker and perpendicular to the radius of the bottom at a
approved in 1943. Last previous edition approved in 2003 as D716 – 86 (2003).
DOI: 10.1520/D0716-86R07.
point such that there is about 1.5-mm ( ⁄16-in.) clearance
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
between the tubing and both the bottom and side of the beaker.
contact ASTM Customer Service at service@astm.o
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