ASTM D5008-22

Standard Test Method for Ethyl Methyl Pentanol Content and Purity Value of 2-Ethylhexanol By Gas Chromatography

SIGNIFICANCE AND USE
4.1 This test method is used to determine the purity value and ethyl methyl pentanol content of 2-ethylhexanol.
SCOPE
1.1 This test method covers the determination of ethyl methyl pentanol content and purity value of 2-ethylhexanol.  
1.2 Water and acid cannot be determined by this test method and must be determined in accordance with Test Methods D1613 and E203 and those results used to normalize the chromatographic data.  
1.3 For purposes of determining conformance of an observed or a calculated value using this test method to relevant specifications, test result(s) shall be rounded off “to the nearest unit” in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 For hazard information and guidance, see the supplier's Material Safety Data Sheet.  
1.6 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. For a specific hazard statement, see 6.1.1.  
1.7 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: 31-Dec-2021
• ICS: 71.080.60 - Alcohols. Ethers
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.35 - Solvents, Plasticizers, and Chemical Intermediates

Relations

• Refers: ASTM E203-24 - Standard Test Method for Water Using Volumetric Karl Fischer Titration
• Effective Date: 01-Jan-2024
• Refers: ASTM D1613-06(2012) - Standard Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products
• Effective Date: 01-Jun-2012
• Refers: ASTM E29-08 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-Oct-2008
• Refers: ASTM E29-06b - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 15-Nov-2006
• Refers: ASTM E29-06a - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 15-Sep-2006
• Refers: ASTM E29-06 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-May-2006
• Refers: ASTM D1613-06 - Standard Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products
• Effective Date: 01-Apr-2006
• Refers: ASTM E29-04 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-Dec-2004
• Refers: ASTM D1613-03 - Standard Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products
• Effective Date: 01-Oct-2003
• Refers: ASTM D1613-02 - Standard Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products
• Effective Date: 10-Jul-2002
• Refers: ASTM E29-02e1 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 10-May-2002
• Refers: ASTM D1613-96(1999) - Standard Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products
• Effective Date: 10-Dec-1999
• Refers: ASTM E29-93a(1999) - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 10-May-1999

Overview

ASTM D5008-22 is the internationally recognized standard test method for determining the content of ethyl methyl pentanol and the purity value of 2-ethylhexanol by gas chromatography. Published by ASTM International, this standard outlines precise procedures and calibration guidelines for analytical laboratories and manufacturers that produce or utilize 2-ethylhexanol as a chemical intermediate, solvent, or plasticizer.

This method employs capillary gas chromatography to separate 2-ethylhexanol from ethyl methyl pentanol and other trace impurities, enabling accurate quantitative assessment. The standard mandates the use of SI units and underscores the importance of safety, health, and environmental considerations.

Key Topics

• Test Method Scope:

  • Specifies the determination of ethyl methyl pentanol content and overall purity value for 2-ethylhexanol samples.
  • Excludes measurement of water and acid, directing users to ASTM D1613 and ASTM E203 for those analyses.

• Analytical Approach:

  • Utilizes flame ionization detection (FID) in conjunction with gas chromatography.
  • Supports both normalization and internal standard calculation techniques for analysis.
  • Requires calibration with known standards and the use of pure internal standards when applicable.

• Data Handling and Reporting:

  • Results must be rounded to the nearest unit in accordance with ASTM E29.
  • Specifies precision and repeatability criteria for interlaboratory consistency.

• Safety and Compliance:

  • Encourages users to review the relevant Material Safety Data Sheets (MSDS) and apply appropriate safety practices.
  • Developed following World Trade Organization (WTO) Technical Barriers to Trade principles.

Applications

Applying ASTM D5008-22 enhances the quality assurance and product conformity processes for industries producing or using 2-ethylhexanol. This standard is particularly valuable in:

• Quality Control Laboratories:
  Ensures reliable identification and quantification of ethyl methyl pentanol and purity in raw materials, intermediates, and finished products.

• Paints, Coatings, and Plastics:
  Critical for manufacturers that use 2-ethylhexanol as a plasticizer or solvent, helping control product performance and compliance with regulatory or customer specifications.

• Chemical Manufacturing:
  Supports compliance with industry and regulatory requirements by providing standardized methods for product certification and batch release testing.

• Research and Development:
  Offers a trusted framework for method development, troubleshooting, and comparative studies in applied chemistry and process engineering.

Related Standards

• ASTM D1613:
  Test method for determining acidity in volatile solvents and chemical intermediates widely used in paint, varnish, lacquer, and related products.

• ASTM E203:
  Standard test method for water content determination using volumetric Karl Fischer titration.

• ASTM E29:
  Practice for using significant digits in test data to determine conformance with specifications, essential for proper data reporting under D5008-22.

• Other Relevant Guidelines:
  Compliance with health, safety, and environmental standards, such as those referenced in supplier Safety Data Sheets and international trade protocols.

Summary

ASTM D5008-22 delivers a robust, standardized methodology for assessing the ethyl methyl pentanol content and purity value of 2-ethylhexanol via gas chromatography. It is instrumental for laboratories and manufacturers focusing on chemical quality assessment, regulatory compliance, and product consistency in global markets. This test method underpins quality assurance for industries reliant on 2-ethylhexanol, ensuring alignment with internationally recognized best practices.

Keywords: ASTM D5008-22, ethyl methyl pentanol content, 2-ethylhexanol purity, gas chromatography, chemical analysis, laboratory standards, ASTM International, solvent testing, chemical quality control, plastics and coatings.

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: D5008 − 22
Standard Test Method for
Ethyl Methyl Pentanol Content and Purity Value of
2-Ethylhexanol By Gas Chromatography
This standard is issued under the fixed designation D5008; 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 2. Referenced Documents
1.1 This test method covers the determination of ethyl
2.1 ASTM Standards:
methyl pentanol content and purity value of 2-ethylhexanol.
D1613 Test Method for Acidity in Volatile Solvents and
Chemical Intermediates Used in Paint, Varnish, Lacquer,
1.2 Waterandacidcannotbedeterminedbythistestmethod
and Related Products
and must be determined in accordance with Test Methods
E29 Practice for Using Significant Digits in Test Data to
D1613 and E203 and those results used to normalize the
Determine Conformance with Specifications
chromatographic data.
E203 Test Method for Water Using Volumetric Karl Fischer
1.3 For purposes of determining conformance of an ob-
Titration
served or a calculated value using this test method to relevant
specifications, test result(s) shall be rounded off “to the nearest
3. Summary of Test Method
unit” in the last right-hand digit used in expressing the
3.1 Arepresentative specimen is introduced onto a capillary
specification limit, in accordance with the rounding-off method
column.The 2-ethylhexanol is separated from the ethyl methyl
of Practice E29.
pentanol and other impurities while the components are trans-
1.4 The values stated in SI units are to be regarded as
ported through the column by an inert carrier gas. The
standard. No other units of measurement are included in this
separated components are measured in the effluent by a flame
standard.
ionization detector and the areas for the peaks are determined
1.5 For hazard information and guidance, see the supplier’s
by a suitable integration technique. The data are interpreted by
Material Safety Data Sheet.
applying component detector response factors to the peak
areas, and the relative concentrations are determined by relat-
1.6 This standard does not purport to address all of the
ing the individual peak responses to the total peak response.
safety concerns, if any, associated with its use. It is the
Acidity and water are measured by Test Methods D1613 and
responsibility of the user of this standard to establish appro-
E203, respectively, and the results are used to normalize the
priate safety, health, and environmental practices and deter-
values obtained by gas chromatography. An internal standard
mine the applicability of regulatory limitations prior to use.
procedure is also included as an alternative calculation tech-
For a specific hazard statement, see 6.1.1.
nique. With this procedure, all impurities are determined
1.7 This international standard was developed in accor-
relative to the internal standard and the purity value is
dance with internationally recognized principles on standard-
determinedbysubtractingthesumoftheimpurities,water,and
ization established in the Decision on Principles for the
acid from 100.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Significance and Use
Barriers to Trade (TBT) Committee.
4.1 This test method is used to determine the purity value
and ethyl methyl pentanol content of 2-ethylhexanol.
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates.
Current edition approved Jan. 1, 2022. Published January 2022. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 1989. Last previous edition approved in 2012 as D5008 – 07 (2012) contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
which was withdrawn January 2021 and reinstated in January 2022. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D5008-22. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5008 − 22
5. Apparatus 6.2 Detector Gases—Hydrogen and air are used for the
flame ionization detector. If a make-up gas is used, helium or
5.1 Chromatograph—Any gas chromatograph designed or
nitrogen are suitable.
modifiedforusewithcapillaryorwide-borecapillarycolumns.
The gas chromatograph should be equipped with a flame 6.3 Standards for Calibration and Identification—Standard
ionization detector or other detector capable of operating with samples for all identifiable components present are needed for
these columns and capable of detecting impurities at a level of identification by retention time, and for calibration for quanti-
0.01 weight % with a signal to noise ratio of at least 5:1. tative measurements. In the case of the internal standard
method, pure (99.0 + %) 2-ethyl-1-butanol is specified as the
5.2 Column—Any column capable of resolving
internal standard. Any other internal standard may be used
2-ethylhexanol from ethyl methyl pentanol and other impuri-
provided it is not present in the sample and doesn’t interfere
ties that may be present. The peaks should be resolved
with any other chromatographic peak with the column used.
quantitatively within a practical elapsed time. Columns that
meet the requirement of this test method are listed in Table 1.
7. Calibration and Standardization
Other columns may be used, provided the user establishes that
a column gives the required separations. 7.1 Identification—Select the conditions of column, column
temperature and carrier-gas flow that will give the necessary
5.3 Specimen Introduction System—Any system capable of
component resolution (see Table 1). Determine the retention
introducing a representative specimen into the gas chromato-
time for each component by injecting small amounts of the
graph may be used.A1-µLsyringe has been used successfully.
compound either separately or in mixtures.
5.4 Computing Integrator—Any computing integrator ca-
7.2 Standardization—The area under each peak generated is
pable of accurately determining the peak areas generated
considered a quantitative measure of the corresponding com-
during this analysis.
pound. The relative area is proportional to concentration if the
5.5 Analytical Balance—The internal standard technique
detector responds equally to all the sample components. The
requires an analytical balance capable of measuring 0.1 mg.
response to different components is generally significantly
different for flame ionization detectors. This difference in
6. Reagents and Materials
detector response may be corrected by use of relative response
6.1 Carrier Gas—Helium, purified nitrogen, or hydrogen factors obtained by injecting and measuring the response of
are suitable. The carrier gas should have a minimum purity of known blends. Using pure materials, prepare a calibration
99.95 mol %. mixture with each component present in the appropriate
6.1.1 Warning—If hydrogen is used, take special safety amount. If an internal standard calculation technique is used,
precautions to ensure that the chromatographic system is free include the internal standard in this calibration mixture. If pure
from leaks. com
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