ASTM D2921-98(2011)
(Test Method)Standard Test Method for Qualitative Tests for the Presence of Water Repellents and Preservatives in Wood Products
Standard Test Method for Qualitative Tests for the Presence of Water Repellents and Preservatives in Wood Products
SIGNIFICANCE AND USE
Although chlorinated phenol-treated wood has become less common due to environmental concerns, repellent-treated wood is commonly specified in construction. This test method provides a means to verify the presence of a significant level of water repellent protection.
SCOPE
1.1 This test method covers simple qualitative field or laboratory tests to determine water repellency or the presence of chlorinated phenol preservative chemicals in wood products that are specified to be water repellent preservative treated.
1.2 The values stated in SI units are to be regarded as 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.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D2921 − 98 (Reapproved 2011)
Standard Test Method for
Qualitative Tests for the Presence of Water Repellents and
Preservatives in Wood Products
This standard is issued under the fixed designation D2921; 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 4.2 Flame Source, such as bunsen burner, butane torch, or
alcohol burner.
1.1 This test method covers simple qualitative field or
laboratory tests to determine water repellency or the presence
4.3 Copper Wire Coil Specimen Holder (or Other Suitable
of chlorinated phenol preservative chemicals in wood prod-
Copper Holder)—A suitable copper wire coil can be made by
ucts that are specified to be water repellent preservative treated. using a lead pencil as a mandrel to form a helix using copper
1 3
wire of about 1.6 to 2.4 mm ( ⁄16 to ⁄32 in.) in diameter. Leave
1.2 The values stated in SI units are to be regarded as
aspaceofapproximatelythediameterofthewirebetweeneach
standard. The values given in parentheses are for information
loop. The helix should be 19 to 25 mm ( ⁄4 to 1 in.) in length.
only.
Leave a pigtail of about 152 mm (6 in.) of wire at one end of
1.3 This standard does not purport to address all of the
the helix and form a loop of approximately 25 mm (1 in.) in
safety concerns, if any, associated with its use. It is the
diameter to be used as a holder for the coil.
responsibility of the user of this standard to establish appro-
4.4 Sharp Knife.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Water Repellent Test
2. Referenced Documents
5.1 Place uncut wood items to be tested so that the end grain
2.1 U.S. Federal Specification:
is exposed as a horizontal surface. If the end grain cannot be so
TT-W-572 Wood Preservative Water-Repellant
positioned, comparisons can be made on the flat grain but with
2.2 NIST Standard:
less definitive results.
262-63 Water Repellent Preservative Non-Pressure Treat-
5.2 With an eye dropper, or similar device, allow several
ment for Mill Work
drops of water to fall from about 13 mm ( ⁄2 in.) on the end
3. Significance and Use
grain of the wood. Wait 5 min and then observe the degree of
penetration. With flat grain or vertical grain surfaces, waiting
3.1 Although chlorinated phenol-treated wood has become
periods of 10 to 15 min may be necessary.
less common due to environmental concerns, repellent-treated
wood is commonly specified in construction. This test method
5.3 Water drops that immediately flatten out, penetrate and
provides a means to verify the presence of a significant level of
darken the wood, indicate that the wood has not been treated
water repellent protection.
with a water repellent.
5.4 Water drops that “bead-up” and remain as spheres, with
4. Apparatus
little or no color change or penetration, indicate that the wood
4.1 Eyedropper, plastic squeeze bottle or similar means for
has been treated with a water repellent. Water repellent
metering drops of water.
preservatives, meeting Fed. Spec. TT-W-572 and NBS Stan-
dard 262-63, impart sufficient water repellency to the end grain
This test method is under the jurisdiction of ASTM Committee D01 on Paint
of wood to cause water drops to bead up and form spheres.
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.52 on Factory Coated Wood Products.
6. Preservative Test
Current edition approved June 1, 2011. Published June 2011. Originally
approved in 1970. Last previous edition approved in 2005 as D2921 – 98 (2005).
6.1 Chlorinated phenol based wood preservatives emit a
DOI: 10.1520/D2921-98R11.
characteristic green flame upon pyrolysis within a ventilated
Pentachlorophenol, tetrachlorophenol a
...
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