ASTM D465-05

Standard Test Methods for Acid Number of Naval Stores Products Including Tall Oil and Other Related Products

SIGNIFICANCE AND USE
These test methods are designed to broaden the scope of the earlier editions of the test method by the inclusion of tall oil and tall oil derived products as test materials and will be referenced in Test Methods D 803.
The acid number is an important property of naval stores products, tall oil, and the products obtained by the fractionation of tall oil. It is the test method widely used to determine the total free acid content of these products.
The potentiometric test method should be used when the most reproducible results are required.
SCOPE
1.1 These test methods are intended for determining the acid number of naval store products as defined in Terminology D 804 including tall oil products, wood and gum rosin, and other related materials. These test methods may not be applicable to all modified rosin products. Two test methods are covered, as follows:
1.1.1 Potentiometric method (referee), and
1.1.2 Internal indicator method (alternate).
1.2 The potentiometric method is suitable for use with both light- and dark-colored products. It should be considered the referee method. The internal indicator method is suitable for use only with light- and medium-colored products with a Gardner color of less than 12. It should be considered the alternate method.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.

General Information

• Status: Historical
• Publication Date: 30-Nov-2005
• ICS: 87.060.20 - Binders
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.34 - Pine Chemicals and Hydrocarbon Resins

Relations

• Replaces: ASTM D465-01 - Standard Test Methods for Acid Number of Naval Stores Products Including Tall Oil and Other Related Products
• Effective Date: 01-Dec-2005
• Replaced By: ASTM D465-05(2010) - Standard Test Methods for Acid Number of Naval Stores Products Including Tall Oil and Other Related Products
• Effective Date: 01-Jun-2010
• Referred By: ASTM D1585-15(2020) - Standard Test Methods for Fatty Acids Content of Pine Chemicals, Including Rosin, Tall Oil, and Related Products
• Effective Date: 01-Dec-2005
• Referred By: ASTM D509-20 - Standard Test Methods of Sampling and Grading Rosin
• Effective Date: 01-Dec-2005
• Referred By: ASTM D803-15(2020) - Standard Test Methods for Testing Tall Oil
• Effective Date: 01-Dec-2005
• Referred By: ASTM B32-20 - Standard Specification for Solder Metal
• Effective Date: 01-Dec-2005

Standards Content (Sample)

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:D465–05
Standard Test Methods for
Acid Number of Naval Stores Products Including Tall Oil
1
and Other Related Products
This standard is issued under the fixed designation D465; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope E70 Test Method for pH of Aqueous Solutions With the
Glass Electrode
1.1 Thesetestmethodsareintendedfordeterminingtheacid
E177 Practice for Use of the Terms Precision and Bias in
number of naval store products as defined in Terminology
ASTM Test Methods
D804 including tall oil products, wood and gum rosin, and
E691 Practice for Conducting an Interlaboratory Study to
other related materials. These test methods may not be appli-
Determine the Precision of a Test Method
cable to all modified rosin products. Two test methods are
covered, as follows:
3. Significance and Use
1.1.1 Potentiometric method (referee), and
3.1 These test methods are designed to broaden the scope of
1.1.2 Internal indicator method (alternate).
theearliereditionsofthetestmethodbytheinclusionoftalloil
1.2 The potentiometric method is suitable for use with both
and tall oil derived products as test materials and will be
light- and dark-colored products. It should be considered the
referenced in Test Methods D803.
referee method. The internal indicator method is suitable for
3.2 Theacidnumberisanimportantpropertyofnavalstores
use only with light- and medium-colored products with a
products,talloil,andtheproductsobtainedbythefractionation
Gardner color of less than 12. It should be considered the
of tall oil. It is the test method widely used to determine the
alternate method.
total free acid content of these products.
1.3 The values stated in SI units are to be regarded as
3.3 Thepotentiometrictestmethodshouldbeusedwhenthe
standard. No other units of measurement are included in this
most reproducible results are required.
standard.
1.4 This standard does not purport to address all of the
4. Preparation of Sample
safety concerns, if any, associated with its use. It is the
4.1 If the sample for analysis is rosin, it shall consist of
responsibility of the user of this standard to establish appro-
small pieces of rosin chipped from a freshly exposed part of a
priate safety and health practices and determine the applica-
lump or lumps, and thereafter crushed to facilitate weighing
bility of regulatory limitations prior to use.
and dissolution. Prepare the sample the same day on which the
test is begun, in order to avoid changes in properties due to
2. Referenced Documents
2 surface oxidation. This is very pronounced on ground rosin
2.1 ASTM Standards:
having a large surface area exposed to the air. Existing rosin
D803 Test Methods for Testing Tall Oil
dust and powdered rosin must not be used.
D804 Terminology Relating to Naval Stores, Including Tall
4.2 If the sample is a nonhomogenous liquid, heat the entire
Oil and Related Products
sample in a closed container fitted with a capillary vent or the
equivalent. Some kind of agitation, even if done occasionally
1
These test methods are under the jurisdiction of ASTM Committee D01 on
byhand,savesmuchtime.Heatbyimmersioninopensteamor
Paint and Related Coatings, Materials, and Applications and are the direct
hot water bath to avoid overheating. When dealing with
responsibility of Subcommittee D01.34 on Naval Stores.
crystallized rosin a temperature of approximately 160°C may
Current edition approved Dec. 1, 2005. Published January 2006. Originally
approved in 1937. Last previous edition approved in 2001 as D465 – 01. DOI: be needed. Sampling should take place only when the entire
10.1520/D0465-05.
sample is homogeneous and has been well stirred.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.3 For other products no special preparation is necessary
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
except storage in a closed container prior to testing.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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D465–05
4.4 Guideline for sample size, solvent, and titrant: the same equipment and techniques as used in the actual acid
number determination.
Sample Size, Solvent I, Solvent II, Titrant,
Sample g mL mL KOH
7.2 Alkali, Standard Solution (0.1 N)—Dissolve 6.6 g of
potassium hydroxide (KOH) (pellets or stick
...