ASTM D269-97(2002)
(Test Method)Standard Test Method for Insoluble Matter in Rosin and Rosin Derivatives
Standard Test Method for Insoluble Matter in Rosin and Rosin Derivatives
SCOPE
1.1 This test method covers the determination of the amount of insoluble matter in rosin and rosin derivatives as described in Terminology D 804.
1.2 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.
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Designation:D269–97(Reapproved 2002)
Standard Test Method for
1
Insoluble Matter in Rosin and Rosin Derivatives
This standard is issued under the fixed designation D 269; 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 4.2 Magnetic Stirring Hot Plate with Polytetrafluoroethyl-
ene (PTFE) Stirbar, or hot plate with manual stirring rod.
1.1 This test method covers the determination of the amount
4.3 Precut Stainless Steel Circular Screen, 325 mesh with
of insoluble matter in rosin and rosin derivatives as described
0.0014-in. wire diameter. (44-µm openings) as described in
in Terminology D 804.
Specification E 11.
1.2 This standard does not purport to address all of the
4.4 Two-Piece Filter Apparatus, appropriate to hold the
safety problems, if any, associated with its use. It is the
stainless steel screens without leaking.
responsibility of the user of this standard to establish appro-
4.5 Analytical Balance, capable of weighing 0.0001 g.
priate safety and health practices and determine the applica-
4.6 Laboratory Tweezers.
bility of regulatory limitations prior to use.
4.7 Forced Draft Oven.
2. Referenced Documents
5. Reagents
2.1 ASTM Standards:
5.1 Clean Toluene, Hexane, Mineral Spirits, or other suit-
D 804 Terminology Relating to Naval Stores Including Tall
2
able solvent for the specific material to be checked in, as
Oil and Related Products
agreed upon between the customer and the supplier.
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
3
poses
6. Procedure
3. Significance and Use 6.1 Rinse the pre-cut screen thoroughly with the solvent to
clean it before use.
3.1 Rosin, particularly gum and wood rosin, occasionally
6.1.1 Dry the clean screen at 105 to 110°C for 30 min, cool
contains small amounts of contamination such as sand, dirt or
in a desiccator, and weigh.
bark. Rosin derivatives occasionally contain traces of insoluble
6.1.2 Record the weight of the dry screen to the nearest
materialasaresultoftherawmaterialsusedintheirproduction
0.0001 g.
or they may be generated during the production process. In all
6.1.3 Place the screen in the filter apparatus and secure it to
instances the presence of such insoluble material should be
prevent leakage.
minimal. This test method describes a rapid and reliable
procedure for determining the amount of such insoluble matter.
NOTE 1—Always use tweezers when handling the pre-cut screen.
It is based on the knowledge that rosin and most of its
6.2 Weigh 100 60.1 g of freshly powdered material to be
derivatives are soluble in numerous organic solvents whereas
tested into an 800-mL beaker. Add 150 mL of solvent. Place a
most common contaminants are not. It is especially useful for
PTFE-coated magnetic st
...
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