ASTM D2074-07

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D2074 − 07
StandardTest Methods for
Total, Primary, Secondary, and Tertiary Amine Values of
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Fatty Amines by Alternative Indicator Method
This standard is issued under the fixed designation D2074; 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.
These test methods were prepared jointly by ASTM and the American Oil Chemists’ Society.
1. Scope 3.1.4 total amine value, n—the number of milligrams of
potassium hydroxide (KOH) equivalent to the basicity in1gof
1.1 These alternative test methods cover the indicator pro-
sample.
cedure for determining the total, primary, secondary, and
tertiary amine values of fatty amines. These procedures are not
4. Apparatus
applicable to fatty amidoamines and fatty diamines.
4.1 Erlenmeyer Flasks, wide-mouth, alkali-resistant,
1.2 The values stated in SI units are to be regarded as
borosilicate-glass, 250-mL capacity.
standard. No other units of measurement are included in this
4.2 Magnetic Stirrer, with an inert plastic-coated stirring
standard.
bar.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Reagents
responsibility of the user of this standard to establish appro-
5.1 Purity of Reagents—Reagent grade chemicals shall be
priate safety and health practices and determine the applica-
used in all tests. Unless otherwise indicated, it is intended that
bility of regulatory limitations prior to use.
all reagents shall conform to the specifications of the Commit-
tee onAnalytical Reagents of theAmerican Chemical Society,
2. Referenced Documents
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where such specifications are available. Other grades may be
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2.1 ASTM Standards:
used, provided it is first ascertained that the reagent is of
D1193 Specification for Reagent Water
sufficiently high purity to permit its use without lessening the
accuracy of the determination.
3. Terminology
5.2 Purity of Water—Unless otherwise indicated, references
3.1 Definitions:
to water shall be understood to mean reagent water conforming
3.1.1 primary amine value, n—the number of milligrams of
to Type II of Specification D1193.
potassium hydroxide (KOH) equivalent to the primary amine
5.3 Bromphenol Blue Indicator Solution— Dissolve 0.2 g of
basicity in1gof sample.
bromphenol blue in 100 mL of methanol, ethanol, or isopro-
3.1.2 secondary amine value, n—the number of milligrams
panol.
of potassium hydroxide (KOH) equivalent to the secondary
5.4 Bromcresol Green Indicator Solution—Dissolve 0.1 g of
amine basicity in1gof sample.
bromcresol green sodium salt in 100 mL of water.
3.1.3 tertiary amine value, n—the number of milligrams of
potassium hydroxide (KOH) equivalent to the tertiary amine 5.5 Chloroform (CHCl ).
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basicity in1gof sample.
5.6 Hydrochloric Acid, Standard Solution (0.1 N)—Add 17
mLofconcentratedhydrochloricacid(HCl,spgr1.19)to1000
mL of isopropyl alcohol in a 2-L volumetric flask. Make up to
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These test methods are under the jurisdiction of ASTM Committee D01 on
volume after cooling to room temperature. Standardize with
Paint and Related Coatings, Materials, and Applications and are the direct
sodium carbonate using bromcresol green as the indicator.
responsibility of Subcommittee D01.33 on Polymers and Resins.
Current edition approved July 1, 2007. Published August 2007. Originally
approved in 1962. Last previous edition approved in 1998 as D2074 – 92 (1998)
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which was withdrawn March 2007 and reinstated in July 2007. DOI: 10.1520/ Reagent Chemicals, American Chemical Society Specifications , American
D2074-07. 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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D2074 − 07
NOTE 2—Instead of 0.2 N HCl, 0.1 N HCl may be used if the quantity
5.7 Hydrochloric Acid, Standard Solution (0.2 N)—Add 34
of tertiary amine is very low.
mL of concentrated HCl (sp gr 1.19) to 1000 mL of isopropyl
alcohol in a 2-L volumetric flask. Make up to volume after
8. Calculation
cooling to room t
...