ASTM D2074-07(2019)

Standard Test Methods for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Alternative Indicator Method

ABSTRACT
These alternative test methods cover the indicator procedure for determining the total, primary, secondary, and tertiary amine values of fatty amines. These procedures are not applicable to fatty amidoamines and fatty diamines. The apparatus includes Erlenmeyer flasks and magnetic stirrer. Reagent grade chemicals shall be used in all tests and includes the following: water, bromphenol blue indicator solution, bromcresol green indicator solution, chloroform, hydrochloric acid standard solution, isopropyl alcohol, phenyl isothiocyanate, and salicylaldehyde. The procedure of determining the total amine values are detailed and the formula of calculating the total amine values is given.
SCOPE
1.1 These alternative test methods cover the indicator procedure for determining the total, primary, secondary, and tertiary amine values of fatty amines. These procedures are not applicable to fatty amidoamines and fatty diamines.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Sep-2019
• ICS: 71.080.30 - Organic nitrogen compounds
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.33 - Polymers and Resins

Relations

• Replaces: ASTM D2074-07(2013) - Standard Test Methods for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Alternative Indicator Method
• Effective Date: 01-Oct-2019
• Refers: ASTM D1193-06 - Standard Specification for Reagent Water
• Effective Date: 01-Mar-2006
• Refers: ASTM D1193-99e1 - Standard Specification for Reagent Water
• Effective Date: 10-Feb-1999
• Refers: ASTM D1193-99 - Standard Specification for Reagent Water
• Effective Date: 10-Feb-1999

Overview

ASTM D2074-07(2019), "Standard Test Methods for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Alternative Indicator Method," provides standardized procedures for determining the total, primary, secondary, and tertiary amine values in fatty amines. Developed by ASTM International, this standard outlines alternative indicator-based methods ideal for laboratories engaged in chemical analysis of fatty amines. These test methods are not applicable to fatty amidoamines or fatty diamines. All measurements are specified in SI units for global consistency and comparability.

Key Topics

• Amine Values Measurement: The standard details definitions and calculations for primary, secondary, tertiary, and total amine values, expressed as the number of milligrams of potassium hydroxide (KOH) equivalent to the basicity per gram of sample.
• Applicable Materials: Focuses exclusively on fatty amines, excluding fatty amidoamines and fatty diamines.
• Reagents and Apparatus: Requires use of high-purity, reagent-grade chemicals such as water (meeting ASTM D1193), bromphenol blue and bromcresol green indicator solutions, chloroform, hydrochloric acid (standard solutions), isopropyl alcohol, phenyl isothiocyanate, and salicylaldehyde. Key lab equipment includes alkali-resistant Erlenmeyer flasks and a magnetic stirrer.
• Test Method Overview:
  • Sample preparation-including melting and accurate weighing
  • Use of specific indicators for titration
  • Differentiation between primary, secondary, and tertiary amine content via stepwise reactions and titrations
  • Calculations provided for each amine value based on titration volume, normality of acid, and specimen weight
• Safety and Environmental Practices: Users must establish appropriate safety, health, and environmental protocols, confirming regulatory compliance prior to use.

Applications

• Quality Control in Chemical Manufacturing: Enables manufacturers to verify the composition and purity of fatty amines used in surfactants, detergents, cosmetics, and lubricants.
• Analytical Laboratories: Provides reliable procedures for consistent quantification of amine functionalities, crucial in research, development, and quality assurance.
• Regulatory and Compliance Testing: Supports documentation and reporting requirements in industries where amine content impacts product classification, safety, or compliance with international standards.
• Product Development: Assists formulation chemists in adjusting and optimizing fatty amine content for tailored functionality in end-use applications.

Related Standards

For comprehensive chemical analysis and laboratory quality assurance, the following related ASTM standards are commonly referenced:

• ASTM D1193 – Specification for Reagent Water: Ensures water purity for accurate chemical analysis.
• Other ASTM Analytical Standards: Additional test methods and procedures for related compounds and analytical quality control.
• International Guidelines: Developed following principles set out by the World Trade Organization Technical Barriers to Trade (TBT) Committee, ensuring relevance for global laboratories.

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Keywords: ASTM D2074, fatty amines, amine values, indicator method, chemical analysis, laboratory testing, quality control, primary amine, secondary amine, tertiary amine, total amine, standardization, ASTM standard, titration method, reagent-grade chemicals

By adopting ASTM D2074-07(2019), laboratories and manufacturers gain a reliable, internationally-recognized test method to determine key chemical properties of fatty amines, supporting both product quality and regulatory compliance.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D2074 − 07 (Reapproved 2019)
Standard Test Methods for
Total, Primary, Secondary, and Tertiary Amine Values of
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 3.1.3 tertiary amine value, n—the number of milligrams of
potassium hydroxide (KOH) equivalent to the tertiary amine
1.1 These alternative test methods cover the indicator pro-
basicity in1gof sample.
cedure for determining the total, primary, secondary, and
3.1.4 total amine value, n—the number of milligrams of
tertiary amine values of fatty amines. These procedures are not
potassium hydroxide (KOH) equivalent to the basicity in1gof
applicable to fatty amidoamines and fatty diamines.
sample.
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
4. Apparatus
standard.
4.1 Erlenmeyer Flasks, wide-mouth, alkali-resistant,
1.3 This standard does not purport to address all of the
borosilicate-glass, 250-mL capacity.
safety concerns, if any, associated with its use. It is the
4.2 Magnetic Stirrer, with an inert plastic-coated stirring
responsibility of the user of this standard to establish appro-
bar.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
5. Reagents
1.4 This international standard was developed in accor-
5.1 Purity of Reagents—Reagent grade chemicals shall be
dance with internationally recognized principles on standard-
used in all tests. Unless otherwise indicated, it is intended that
ization established in the Decision on Principles for the
all reagents shall conform to the specifications of the Commit-
Development of International Standards, Guides and Recom-
tee onAnalytical Reagents of theAmerican Chemical Society,
mendations issued by the World Trade Organization Technical
where such specifications are available. Other grades may be
Barriers to Trade (TBT) Committee.
used, provided it is first ascertained that the reagent is of
2. Referenced Documents
sufficiently high purity to permit its use without lessening the
2.1 ASTM Standards: accuracy of the determination.
D1193 Specification for Reagent Water
5.2 Purity of Water—Unless otherwise indicated, references
to water shall be understood to mean reagent water conforming
3. Terminology
to Type II of Specification D1193.
3.1 Definitions:
5.3 Bromphenol Blue Indicator Solution—Dissolve 0.2 g of
3.1.1 primary amine value, n—the number of milligrams of
bromphenol blue in 100 mL of methanol, ethanol, or isopro-
potassium hydroxide (KOH) equivalent to the primary amine
panol.
basicity in1gof sample.
5.4 Bromcresol Green Indicator Solution—Dissolve 0.1 g of
3.1.2 secondary amine value, n—the number of milligrams
bromcresol green sodium salt in 100 mL of water.
of potassium hydroxide (KOH) equivalent to the secondary
amine basicity in1gof sample.
5.5 Chloroform (CHCl ).
5.6 Hydrochloric Acid, Standard Solution (0.1 N)—Add 17
These test methods are under the jurisdiction of ASTM Committee D01 on
mLofconcentratedhydrochloricacid(HCl,spgr1.19)to1000
Paint and Related Coatings, Materials, and Applications and are the direct
responsibility of Subcommittee D01.33 on Polymers and Resins.
Current edition approved Oct. 1, 2019. Published October 2019. Originally
approved in 1962. Last previous edition approved in 2013 as D2074 – 07(2013). ACS Reagent Chemicals, Specifications and Procedures for Reagents and
DOI: 10.1520/D2074-07R19. Standard-Grade Reference Materials, American Chemical Society, Washington,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or DC. For suggestions on the testing of reagents not listed by theAmerican Chemical
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Society, see Analar Standards for Laboratory Chemicals, BDH Ltd., Poole, Dorset,
Standards volume information, refer to the standard’s Document Summary page on U.K., and the United States Pharmacopeia and National Formulary, U.S. Pharma-
the ASTM website. copeial Convention, Inc. (USPC), Rockville, MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D2074 − 07 (2019)
mL of isopropyl alcohol in a 2-L volumetric flask. Make up to point (Note 1 and Note 2). The yellow may fade back to green
volume after cooling to room temperature. Standardize with upon standing, but this may be disregarded if the yellow color
sodium carbonate using bromcresol green as the indicator. is bright and the addition of another millilitre of 0.2 N HCl
does not change th
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