ASTM D1107-96
(Test Method)Standard Test Method for Ethanol-Toluene Solubility of Wood
Standard Test Method for Ethanol-Toluene Solubility of Wood
SCOPE
1.1 This test method covers the determination of the ethanol-toluene soluble content of wood, which is a measure of the waxes, fats, resins, and oils, plus tannins and certain other ether-insoluble components.
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. Specific precautionary statements are given in Section 4.1.
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Designation: D 1107 – 96 Technical Association of Pulp and Paper Industry
Standard Method T 204 os-76
Standard Test Method for
Ethanol-Toluene Solubility of Wood
This standard is issued under the fixed designation D 1107; 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. Test Specimen
1.1 This test method covers the determination of the 5.1 The test specimen shall consist of2gofair-dried
ethanol-toluene soluble content of wood, which is a measure of sawdust that has been ground to pass a 425-μm (40 mesh) sieve
the waxes, fats, resins, and oils, plus tannins and certain other and be retained on a 250-μm (60 mesh) sieve.
ether-insoluble components.
6. Procedure
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 6.1 Weigh two 2-g test specimens in tared Alundum or
fritted-glass crucibles. Dry one specimen in an oven for2hat
responsibility of the user of this standard to consult and
establish appropriate safety and health practices and deter- 100 to 105°C, then place in a loosely stoppered weighing
mine the applicability of regulatory limitations prior to use. bottle, cool in a desiccator, and weigh. Continue the drying for
1-h periods until the weight is constant. Calculate the propor-
Specific precautionary statements are given in Section 4.1.1.
tions of moisture-free sawdust in the air-dry specimen.
2. Significance and Use
6.2 Place the other specimen in a Soxhlet extraction appa-
2.1 The ethanol-toluene extract of wood consists of the ratus having a tared Soxhlet extraction flask. Set a small disk of
soluble materials not generally considered part of the wood fine-mesh screen wire in the top of the crucible to prevent loss
polymeric structure. They are primarily the waxes, fats, resins, of specimen. Extract with 150 mL of ethanol-toluene solution
and some gums, as well as some water-soluble substances. The for 6 to 8 h, keeping the liquid boiling briskly. This should
amounts are influenced by seasoning and drying. provide four to six siphonings per hour.
6.3 After evaporating the solvent from the extraction flask,
3. Apparatus
dry the flask and contents in an oven for1hat100 to 105°C,
3.1 Filtering Crucibles—Alundum or fritted-glass filtering cool in a dessicator, and weigh. Continue the drying until there
crucibles of coarse porosity.
is no further loss in weight.
3.2 Extraction Apparatus—A compact form of Soxhlet
7. Calculation and Report
extraction apparatus, with ground-glass joints, is preferable.
The apparatus shall consist of the following items: 7.1 Report the results as weight percentage of ethanol-
3.2.1 Soxhlet Extraction Flask having a capacit
...
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