ASTM D1490-01

Standard Test Method for Nonvolatile Content of Urea-Formaldehyde Resin Solutions

SCOPE
1.1 This test method covers the determination of the apparent nonvolatile content of urea-formaldehyde resin solutions intended for use as wood adhesives. Due to the chemical nature of such resins, the nonvolatile content determined varies markedly according to the type of test used. In order to minimize this condition, this test method is designed to yield reasonably uniform agreement among different laboratories testing specimens from the same sample.  
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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Oct-2001
• ICS: 83.080.10 - Thermosetting materials
• Technical Committee: D14 - Adhesives
• Drafting Committee: D14.30 - Wood Adhesives

Relations

• Replaces: ASTM D1490-96e1 - Standard Test Method for Nonvolatile Content of Urea-Formaldehyde Resin Solutions
• Effective Date: 10-Oct-2001
• Replaced By: ASTM D1490-01(2006) - Standard Test Method for Nonvolatile Content of Urea-Formaldehyde Resin Solutions
• Effective Date: 01-Oct-2006
• Referred By: ASTM D4690-12(2018) - Standard Specification for Urea-Formaldehyde Resin Adhesives
• Effective Date: 10-Oct-2001
• Referred By: ASTM D4209-07(2019) - Standard Practice for Determining Volatile and Nonvolatile Content of Cellulosics, Emulsions, Resin Solutions, Shellac, and Varnishes
• Effective Date: 10-Oct-2001
• Referred By: ASTM D4317-16(2023) - Standard Specification for Polyvinyl Acetate-Based Emulsion Adhesives
• Effective Date: 10-Oct-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D1490–01
Standard Test Method for
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Nonvolatile Content of Urea-Formaldehyde Resin Solutions
This standard is issued under the fixed designation D 1490; 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.
1. Scope * 5.3 Constant-Temperature Oven, capable of maintaining a
temperature of 105 6 1°C (221 6 2°F) and an air turnover of
1.1 This test method covers the determination of the appar-
15 to 17 times per min. Use only one shelf for supporting the
ent nonvolatile content of urea-formaldehyde resin solutions
specimens. Position this shelf in the upper third of the oven, as
intended for use as wood adhesives. Due to the chemical nature
near one third from the ceiling as possible. Level the shelf to
of such resins, the nonvolatile content determined varies
within 0.025 mm from edge to edge in all directions. Place the
markedly according to the type of test used. In order to
thermometer bulb as close to the center of the shelf as possible.
minimize this condition, this test method is designed to yield
5.4 Tared Lunge Weighing Pipet, stoppered weighing bottle,
reasonably uniform agreement among different laboratories
or equivalent dispenser for accurately weighing by difference.
testing specimens from the same sample.
5.5 Drying Dishes—Aluminum foil dishes, with 57 to
1.2 The values stated in SI units are to be regarded as the
58-mm inside diameter and 17 mm deep, with flat bottoms,
standard. The values given in parentheses are for information
having a tolerance of 60.076 mm.
only.
5.6 Desiccator, with tray, containing active anhydrous cal-
1.3 This standard does not purport to address all of the
cium chloride desiccant.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
6. Sampling
priate safety and health practices and determine the applica-
6.1 Take a sufficient quantity of the resin lot being evaluated
bility of regulatory limitations prior to use.
to conduct the test. While the test consumes less than 10 g of
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2. Referenced Documents resin, a sample of approximately 0.23 L ( ⁄2 pt) is suggested to
ensure that it is representative and will permit rechecks, if
2.1 ASTM Standards:
2
necessary. Record the lot number of the resin being used.
D 907 Terminology of Adhesives
6.2 As urea-formaldehyde resin solutions have a varying
3. Terminology
tendency toward mild settling or stratification, agitate the resin
thoroughly before sampling, and mix the sample well before it
3.1 Definitions—Many terms in this test method are defined
is used in the test.
in Terminology D 907.
7. Procedure
4. Significance and Use
7.1 Preparation of Test Specimens—Place a portion of the
4.1 Wood adhesive performance and cost is often related to
sample in the weighing dispenser and weigh to 61.0 mg.
the solids level (nonvolatile content).
Transfer a sufficient amount of the sample to yield 0.45 6 0.05
4.2 This test method determines the apparent nonvolatile
g of dried residue, to a tared drying dish which has been
content for urea-formaldehyde resins.
previously dried for1hat105 6 1°C (221 6 2°F), and cooled
5. Apparatus
and held in the desiccator until time of use. Reweigh the
dispenser and determine, by difference to 61.0 mg, the exact
5.1 Analytical Balance, accurate to 61.0 mg.
weight of the specimen transferred to the drying dish. Prepare
5.2 Thermometer—A glass thermometer having a range
a total of three such specimens from the contents of the
from 0 to 110 or 150°C (32 to 230 or 302°F) and accurate to
weighing dispenser. Pipet 5 mL (0.01 pt) of water into each
61°C (62°F) at the required immersion.
tared drying dish and mix the water and resin thoroughly by
gently rotating the dish.
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7.2 Drying the Specimens—Place the drying dishes contain-
This test method is under the jurisdiction of ASTM Committee D14 on
Adhesives and is the direct responsibility of Subcommittee D14.30 on Wood
ing the diluted specimens in the temperature oven, previously
Adhesives.
adjusted to 105 6 1°C (221 6 2°F) with the oven vents and air
Current edition approved Oct. 10, 2001. Published December 2001. Originally
{1
flow adjusted to maintain an air turnover of 16 6 1 times per
published as D 1490 – 57 T. Last previous edition D 1490 – 96 .
2
Annual Book of ASTM Standards, Vol 15.06. min. Do this within 30 min after the specimens have been
*A Summary of Changes section appears at the end of this standard.
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