ASTM D2106-05
(Test Method)Standard Test Methods for Determination of Amine Acid Acceptance (Alkalinity) of Halogenated Organic Solvents
Standard Test Methods for Determination of Amine Acid Acceptance (Alkalinity) of Halogenated Organic Solvents
SCOPE
1.1 These test methods, where applicable, cover the determination of the acid acceptance of halogenated organic solvents due to the presence therein of an organic amine titratable by standard acid. These test methods are suitable for samples of 0.001 to 0.02 weight percent (10 - 200 ppm) alkalinity as NaOH. Two test methods are covered as follows:
1.1.1 Test Method A— pH Method, and
1.1.2 Test Method B— Indicator Method.
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.
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Designation:D2106–05
Standard Test Methods for
Determination of Amine Acid Acceptance (Alkalinity) of
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Halogenated Organic Solvents
This standard is issued under the fixed designation D 2106; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Significance and Use
1.1 These test methods, where applicable, cover the deter- 4.1 This test method is useful for the determination of the
mination of the acid acceptance of halogenated organic sol- amount of acid acceptance contributed by amines or bases as
vents due to the presence therein of an organic amine titratable compared to other acid-accepting compounds.
bystandardacid.Thesetestmethodsaresuitableforsamplesof
5. Purity of Reagents
0.001 to 0.02 weight percent (10 – 200 ppm) alkalinity as
5.1 Reagent grade chemicals shall be used in all tests.
NaOH. Two test methods are covered as follows:
1.1.1 Test Method A— pH Method, and Unless otherwise indicated, it is intended that all reagents shall
conform to the specifications of the Committee on Analytical
1.1.2 Test Method B— Indicator Method.
1.2 This standard does not purport to address all of the Reagents of the American Chemical Society, where such
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specifications are available. Other grades may be used, pro-
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- vided it is first ascertained that the reagent is of sufficiently
high purity to permit its use without lessening the accuracy of
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. the determination.
5.2 Purity of Water— Unless otherwise indicated, refer-
2. Referenced Documents
ences to water shall be understood to mean distilled water or
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2.1 ASTM Standards: water of equal purity. Additional requirements are specified in
E70 Test Method for pH of Aqueous Solutions With the 8.1 and 12.1.
Glass Electrode
TEST METHOD A—pH METHOD
E 200 Practice for Preparation, Standardization, and Stor-
age of Standard and Reagent Solutions for Chemical
6. Summary of Test Method
Analysis
6.1 The amine acid acceptance of the halogenated organic
solvent is determined, after extraction into a volume of water
3. Terminology
preadjusted to a pH of 3.9, by titrating with standard acid to a
3.1 Definition:
pH of 3.9. The extraction is performed either by stirring the
3.1.1 amine acid acceptance—the degree to which an or-
immiscible liquids mechanically or by shaking the immiscible
ganic amine present in the halogenated organic solvent is
layers of liquids manually.
capable of absorbing or neutralizing acid generated by the
solvent or introduced into it from an external source.
7. Apparatus
7.1 pH Meter, equipped with a pH indicating electrode and
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pH reference electrode or combination electrode.
These test methods are under the jurisdiction of ASTM Committee D26 on
Halogenated Organic Solvents and Fire Extinguishing Agents and are the direct
responsibility of Subcommittee D26.04 on Test Methods.
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Current edition approved June 1, 2005. Published June 2005. Originally Reagent Chemicals, American Chemical Society Specifications, American
approved in 1962. Last previous edition approved in 2000 as D 2106 – 00. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or listed by the American Chemical Society, see Analar Standards for Laboratory
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Standards volume information, refer to the standard’s Document Summary page on and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
the ASTM website. MD.
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D2106–05
electrodes have been wet with halogenated solvent, it may be treated by
7.2 Stirrer, electric stirring bar, air-driven or magnetic.
rinsing the electrode with acetone or alcohol, followed by thorough
rinsing with water and soaking in water for a short time.
8. Reagents
9.3 Using Hand Agitation—If no stirrer is available, the
8.1 Water—Adjust the pH of 1 L (or any convenient
extraction and titration may be carried out as follows: Transfer
quantity) of water to 3.9. Boil 1 L of distilled water for 5 min
50 mL of the hal
...
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