ASTM D1240-02

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Designation:D1240–02
Standard Test Methods for
Rosin Acids Content of Naval Stores, Including Rosin, Tall
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Oil, and Related Products
This standard is issued under the fixed designation D 1240; 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 followed by titration of the unreacted rosin acids, or by
selective esterification of fatty acids to form methyl esters
1.1 These test methods cover the determination of rosin
followed by extraction of the sulfuric acid catalyst and titration
acids in tall oil, tall oil fatty acid, tall oil rosin, and other naval
of the unreacted rosin acids.
stores products.
1.2 These test methods may not be applicable to adducts or
4. Significance and Use
derivatives of rosin, fatty acid, or other naval stores products.
4.1 This is revision of the method for measuring rosin acids
1.3 This standard does not purport to address all of the
content combines the three major ways of determining the
safety concerns, if any, associated with its use. It is the
rosin acids content of naval stores products into a single
responsibility of the user of this standard to establish appro-
method.
priate safety and health practices and determine the applica-
4.1.1 For materials containing less than 15 % rosin, the
bility of regulatory limitations prior to use.
modified Glidden procedure has gained acceptance over the
2. Referenced Documents Herrlinger-Compeau. For materials containing more than 15 %
rosin the modified Wolfe Method is preferred. The modified
2.1 ASTM Standards:
Wolfe and modified Glidden procedures differ only in their
D 1585 Test Methods for Fatty Acids Content of Naval
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details.They have been combined here into a single procedure.
Stores, Including Rosin, Tall Oil, and Related Products
This procedure can be run using either a potentiometer or an
E 70 Test Method for pH of Aqueous Solutions with the
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internal indicator to determine the end point of the titration.
Glass Electrode
Use of a potentiometer is preferred and is the referee method.
E 177 Practice for the Use of the Terms Precision and Bias
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Use of an internal indicator is the principal alternative method.
in ASTM Test Methods
They will be referred to as the Potentiometric Method and the
E 691 Practice for Conducting an Interlaboratory Study to
4 Internal Indicator Method to distinguish them from the
Determine the Precision of a Test Method
Herrlinger-Compeau and Linder-Persson methods.
3. Summary of Test Method 4.1.2 The Herrlinger-Compeau Method is limited in appli-
cation to materials containing less than 15 % rosin. It is little
3.1 The rosin acids content is determined by one of three
used in the industry today. Much early work is based on this
procedures; by selective esterification of fatty acids to form
test method so it is included here to provide a historical basis
methyl esters followed by titration of the unreacted rosin acids,
for the overall test method.
by selective esterification of fatty acids to form butyl esters
4.1.3 The Linder-Persson Method is also little used in the
industry today. It is applicable for measuring the rosin acids
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These test methods are under the jurisdiction of ASTM Committee D01 on
content of naval stores products containing greater than 60 %
Paint and Related Coatings, Materials, and Applications and are the direct
rosin. Like the Herrlinger-Compeau, it is included here to
responsibility of Subcommittee D01.34 on Naval Stores.
provideahistoricalbasisforthetestmethod.Inthoseinstances
Current edition approved May 10, 2002. Published July 2002. Originally
where they are used, the Herrlinger-Compeau and Linder-
published as D 1240 – 52 T. Last previous edition D 1240 – 96.
2
Annual Book of ASTM Standards, Vol 06.03.
Persson methods are often in conjunction to cover the whole
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Annual Book of ASTM Standards, Vol 15.05.
range of rosin content.
4
Annual Book of ASTM Standards, Vol 14.02.
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D1240
5. Reagents 9.3 Buret, 50-mL capacity, with 0.1-mL divisions. The
so-called automatic buret is preferable as its use minimizes
5.1 Purity of Reagents—Reagent grade chemicals shall be
errors due to evaporation. The automatic buret should be
used in all tests. Unless otherwise indicated, it is intended that
guarded with soda-lime tubes against the absorption of CO
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all reagents shall conform to the specifications of the Commit-
from the air.
tee on Analytical Reagents of the American Chemical Society
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9.4 Erlenmeyer Fla
...