ASTM D1585-96(2003)
(Test Method)Standard Test Methods for Fatty Acids Content of Naval Stores, Including Rosin, Tall Oil, and Related Products
Standard Test Methods for Fatty Acids Content of Naval Stores, Including Rosin, Tall Oil, and Related Products
SCOPE
1.1 These test methods cover the determination of the fatty acids of naval stores, including rosin, tall oil, and related products.
1.2 These test methods may not be applicable to adducts or derivatives of rosin or other naval stores products.
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.
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Designation:D1585–96(Reapproved2003)
Standard Test Methods for
Fatty Acids Content of Naval Stores, Including Rosin, Tall
Oil, and Related Products
This standard is issued under the fixed designation D 1585; 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 3. Summary of Test Methods
1.1 These test methods cover the determination of the fatty 3.1 The rosin acids content is determined using either the
acids of naval stores, including rosin, tall oil, and related modified potentiometric Wolfe Method or the modified indica-
products. tor Wolfe Method described in Test Methods D 1240. Rosin
1.2 These test methods may not be applicable to adducts or acids are calculated as abietic acid.
derivatives of rosin or other naval stores products. 3.2 The acid number is determined by either the potentio-
1.3 This standard does not purport to address all of the metric or the indicator method in accordance with Test Meth-
safety concerns, if any, associated with its use. It is the ods D 465.
responsibility of the user of this standard to establish appro- 3.3 The unsaponifiable matter is determined in accordance
priate safety and health practices and determine the applica- with the methods described in Test Method D 1065.
bility of regulatory limitations prior to use. 3.4 The fatty acids are calculated by two methods.
3.4.1 For materials with a fatty acid content less than 5 %,
2. Referenced Documents
fatty acid content is calculated from the rosin acids content and
2.1 ASTM Standards: the acid number.
D 465 Test Methods for Acid Number of Naval Stores
3.4.2 For materials with a fatty acid content greater than
Products Including Tall Oil and Other Related Products 5 %, fatty acid content is calculated from the rosin acids and
D 803 Test Methods for Testing Tall Oil
unsaponifiables content.
D 890 Test Method for Water in Liquid Naval Stores 3.5 The same method for end point detection, either poten-
D 1065 Test Method for Unsaponifiable Matter in Naval
tiometric or indicator, should be used for acid number, unsa-
Stores, Including Rosin, Tall Oil, and Related Products
ponifiables, and rosin acids content determination, in order to
D 1240 Test Methods for Rosin Acids Content of Naval avoid slight variables that might occur.
Stores, Including Rosin, Tall Oil, and Related Products
3.6 Since the fatty acids remaining in tall oil rosin, tall oil,
E 177 Practice for the Use of the Terms Precision and Bias and other naval stores products consist of oleic acid with
in ASTM Test Methods
varyingamountsofothersaturatedandunsaturatedacids,ithas
E 691 Practice for Conducting an Interlaboratory Study to becomecustomarytocalculateandreportthefattyacidcontent
Determine the Precision of a Test Method
as oleic acid.
4. Significance and Use
1 4.1 These test methods are designed to broaden the scope of
These test methods are under the jurisdiction of ASTM Committee D01 on
the previous edition of these test methods by the inclusion of
Paint and Related Coatings, Materials, and Applications and are the direct
responsibility of Subcommittee D01.34 on Naval Stores.
tall oil as a test material. Test Methods D 803 currently
Current edition approved July 10, 2003. Published July 2003. Originally
includes methods for the determination of the rosin acid and
approved in 1958. Last previous edition approved in 1996 as D 1585 – 96.
fatty acid content of crude tall oil. Test Methods D 803
Annual Book of ASTM Standards, Vol 06.03.
Annual Book of ASTM Standards, Vol 14.02. references Test Method D 1585.
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D1585–96 (2003)
4.2 Rosin and tall oil are composed primarily of rosin acids FATTYACIDS
and fatty acids, and the measurement of these components is
11. Calculation
important in establishing the composition of these materials.
11.1 For materials containing less than 5 % fatty acid,
5. Purity of Reagents
calculate the percentage of fatty acids from the acid number
5.1 Reagent grade chemicals shall be used in all tests.
and the percentage of rosin acids as follows:
Unless otherwise indicated, it is intended that all reagents shall
Fatty acids as oleic acid, % 5 @A 2 ~R 3 1.855!#/1.986 (1)
conform to the specifications of the Committee on Analytical
Reagents of the American Chemical Society, where such
where:
specifications are available. Other grades may be used, pro-
A = acid number of original sample,
vided it is first ascertained that the reagent is of sufficiently
R = rosin acids, %,
high purity to permit its use without lessening the accuracy of 1.855 = (56.1 3 1000)/(302.4 3
...
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