ASTM D464-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D464 – 05
Standard Test Methods for
Saponification Number of Naval Store Products Including
1
Tall Oil and Other Related Products
This standard is issued under the fixed designation D464; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope E70 Test Method for pH of Aqueous Solutions With the
Glass Electrode
1.1 These test methods cover the determination of the
saponification number of tall oil and products obtained by the
3. Significance and Use
fractionation of tall oil such as rosin, fatty acids and distilled
3.1 These test methods are designed to broaden the scope of
talloilasdefinedinTerminologyD804.Thesetestmethodsare
theearliereditionsofthetestmethodbytheinclusionoftalloil
also applicable to gum and wood rosin. Two test methods are
and tall oil derived products as test materials and is referenced
covered as follows:
in Test Methods D803.
1.1.1 Test method using a potentiometric method, and
3.2 The saponification number is an important property of
1.1.2 Test method using an internal indicator method.
talloilandtheproductsobtainedbythefractionationoftalloil.
1.2 The potentiometric method is suitable for use with both
It is the test method widely used to determine the total acid
light- and dark-colored test samples. It should be considered
content, both free and combined, of these products.
the referee method. The internal indicator method is suitable
3.3 The potentiometric test method should be used when the
for use only with light- and medium-colored test samples. It
most reproducible results are required.
should be considered the alternate method.
1.3 The values stated in SI units are to be regarded as
4. Preparation of Sample
standard. No other units of measurement are included in this
4.1 If the sample for analysis is rosin, it shall consist of
standard.
small pieces of rosin chipped from a freshly exposed part of a
1.4 This standard does not purport to address all of the
lump or lumps, and thereafter crushed to facilitate weighing
safety concerns, if any, associated with its use. It is the
and dissolution. Prepare the sample the same day on which the
responsibility of the user of this standard to establish appro-
test is begun in order to avoid changes in properties due to
priate safety and health practices and determine the applica-
surface oxidation. Changes are very pronounced on ground
bility of regulatory limitations prior to use.
rosin that has a large surface area exposed to air. Existing rosin
2. Referenced Documents dust and powdered rosin must not be used.
2 4.2 If the sample is a nonhomogeneous liquid, heat the
2.1 ASTM Standards:
entire sample in a closed container fitted with a capillary vent
D803 Test Methods for Testing Tall Oil
or the equivalent. Some kind of agitation, even if done
D804 Terminology Relating to Naval Stores, Including Tall
occasionally by hand, saves much time. Heat by immersion in
Oil and Related Products
open steam or hot water bath to avoid overheating. When
dealing with crystallized rosin, a higher temperature of ap-
1
These test methods are under the jurisdiction of ASTM Committee D01 on
proximately 160°C may be needed. Remove samples for
Paint and Related Coatings, Materials, and Applications and are the direct
testing only when the entire sample is homogeneous and has
responsibility of Subcommittee D01.34 on Naval Stores.
been well stirred.
Current edition approved Dec. 1, 2005. Published January 2006. Originally
approved in 1937. Last previous edition approved in 1999 as D464 – 95 (1999).
5. Purity of Reagents and Water
DOI: 10.1520/D0464-05.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1 Unless otherwise indicated, it is intended that all re-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
agents shall conform to the specifications established by the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Committee on Analytical Reagents of the American Chemical
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D464 – 05
3 6
Society, wheresuchspecificationsareavailable.Referencesto flask. Use the special grade of borax prepared specifically for
water shall be understood to mean distilled or deionized water. use as a pH standard.As an alternative, commercially available
buffer with a pH between 9 and 11 may be used.
POTENTIOMETRIC TEST METHOD (Referee Method)
8. Procedure
6. Apparatus
8.1 Transfer 2.95 to 3.05 g of the
...