ASTM D889-99
(Test Method)Standard Test Method for Volatile Oil in Rosin
Standard Test Method for Volatile Oil in Rosin
SCOPE
1.1 This test method covers the determination of the volatile oil content of rosin or similar material. The oil may consist of naturally occurring terpene oil, such as heavy fractions of turpentine, resulting from incomplete distillation in the processing of the rosin, or of foreign nonterpene oil resulting from incomplete removal of mineral or coal-tar solvent used to extract the rosin from wood or still wastes. In certain cases the volatile oil could consist of decarboxylated rosin formed during the processing of the rosin.
1.2 This standard does not purport to address all of the safety problems, 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: D 889 – 99
Standard Test Method for
Volatile Oil in Rosin
This standard is issued under the fixed designation D 889; 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 fitted with 24/40 standard-taper ground joints to provide tight
connections with the flask and condenser, in order to avoid
1.1 This test method covers the determination of the volatile
vapor loss.
oil content of rosin or similar material. The oil may consist of
naturally occurring terpene oil, such as heavy fractions of
NOTE 1—This trap is a modification of the original Clevenger trap used
turpentine, resulting from incomplete distillation in the pro- to recover oils lighter than water. In that trap the oil and water condensate
drop directly into the graduated part of the trap. Due to the viscous
cessing of the rosin, or of foreign nonterpene oil resulting from
character, density, and surface tension of the oils recovered from rosin,
incomplete removal of mineral or coal-tar solvent used to
cylindrical columns of oil were formed below the surface of the water in
extract the rosin from wood or still wastes. In certain cases the
the graduated section of the trap, which were not penetrated by the water
volatile oil could consist of decarboxylated rosin formed
condensed immediately thereafter. This resulted in alternate columns of oil
during the processing of the rosin.
and water in the graduated section. These were returned to the distilling
1.2 This standard does not purport to address all of the
flask in the same order as they occurred, through the side arm of the trap.
safety concerns, if any, associated with its use. It is the As this condition continued indefinitely, it was impossible to completely
remove all the oil from the rosin. By raising the opening of the side arm
responsibility of the user of this standard to establish appro-
of the trap to the position shown, to bring the surface of the liquid into the
priate safety and health practices and determine the applica-
wide part of the trap above the narrow graduated section, the oil is
bility of regulatory limitations prior to use.
collected in a thinner film that can be penetrated readily by the droplets of
water falling from the end of the condenser, and only the water is thus
2. Referenced Documents
collected in the narrow graduated section. At the end of the test, the oil is
2.1 ASTM Standards:
slowly brought down into the graduated section and its volume read. The
D 233 Test Methods of Sampling and Testing Turpentine system or apparatus loss amounts to not more than 0.1 mL of oil.
E 1 Specification for ASTM Thermometers
4.3 Condenser, straight-tube, 300-mm, water-jacketed re-
flux type, with a 24/40 standard-taper ground joint for connec-
3. Significance and Use
tion with the trap.
3.1 Rosin and similar materials such as rosin derivatives
4.4 Heat Source—An oil bath containing high-temperature-
often contain volatile material derived from the raw material
resistant oil, or an electric heater of the mantle type in which
used or formed as a result of the processing of the rosin. This
the heating elements are encased in a glass cloth mantle of such
volatile material can have a significant effect on the physical
shape as to partially or completely surround the flask being
and chemical properties of the rosin and so a standard method
heated.
for its determination is required.
4.5 Thermometer, having a range from 30 to 200 °C, ASTM
16C or equivalent (see Specification E 1).
4. Apparatus
4.6 Glass Beads.
4.1 Flask, 500-mL round-bottom having a thermometer well
and a 24/40 standard-taper ground joint for connection with the
5. Procedure
trap (see Fig. 1).
5.1 Place 50 g of the crushed sample in the flask, add 125
4.2 Trap (Fig. 2), designed so as to overcome the tendency
mL of a glycerin-water solution (4 + 1), add a few glass beads,
for droplets of oil to remain below the surface of the water, due
insert an ebullition tube, and connect the flask with the trap.
to the greater viscosity of the volatile oils recovered from rosin,
Fill the trap (Fig. 2) with water through the top opening until
and thus be returned to the flask (Note 1). The trap shall be
the water level is even with the bottom of the seal of the small
return tube to the side arm. Insert the thermometer, and connect
the condenser.
This test method is under the jurisdiction of ASTM Committe
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