ASTM E769-22

Standard Test Methods for Odor of Methanol, Ethanol, <emph type="ital">n</emph>-Propanol, and Isopropanol

SIGNIFICANCE AND USE
3.1 These test methods are intended to provide procedures that may be used to evaluate denatured and undenatured alcohols with 1 to 3 carbon atoms for characteristic and residual odors that will affect their end use.  
3.2 The products tested are compared to reference standards using one or all of the test methods described. Interpretation of results and acceptability of the product for a specific end use are the responsibility of the panel supervisor and are based on the results obtained in testing.  
3.3 These tests may be used to qualify the suitability of these products for use in a customer-producer relationship.
SCOPE
1.1 These test methods cover procedures for observing characteristic and residual odors and estimating odor intensity of methanol, ethanol, n-propanol, and isopropanol for the purpose of determining their odor acceptability. Several test methods are included and any or all may be used. These test methods may be used for both denatured and undenatured alcohols.  
1.2 These test methods are not intended to determine subtle odor differences between alcohols, which do not affect their end use.  
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: 28-Feb-2022
• ICS: 71.080.60 - Alcohols. Ethers
• Technical Committee: E18 - Sensory Evaluation
• Drafting Committee: E18.06 - Food and Beverage Evaluation

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: E769 − 22
Standard Test Methods for
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Odor of Methanol, Ethanol, n-Propanol, and Isopropanol
This standard is issued under the fixed designation E769; 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 3.2 The products tested are compared to reference standards
using one or all of the test methods described. Interpretation of
1.1 These test methods cover procedures for observing
results and acceptability of the product for a specific end use
characteristic and residual odors and estimating odor intensity
are the responsibility of the panel supervisor and are based on
of methanol, ethanol, n-propanol, and isopropanol for the
the results obtained in testing.
purpose of determining their odor acceptability. Several test
methods are included and any or all may be used. These test 3.3 These tests may be used to qualify the suitability of
methods may be used for both denatured and undenatured these products for use in a customer-producer relationship.
alcohols.
4. Reference Standards
1.2 These test methods are not intended to determine subtle
4.1 Reference standards of the products to be tested, having
odor differences between alcohols, which do not affect their
odor characteristics satisfactory to the consumer and producer,
end use.
are required.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 4.2 Periodically examine reference standards to assure their
responsibility of the user of this standard to establish appro- continued acceptability, and replace when necessary.
priate safety, health, and environmental practices and deter-
5. Selection of Panel
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
5.1 A panel of at least five trained judges is recommended
dance with internationally recognized principles on standard-
for these evaluations.
ization established in the Decision on Principles for the
5.2 The panel may be selected and trained in accordance
Development of International Standards, Guides and Recom-
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with the methods outlined inASTM STP 758. Since discrimi-
mendations issued by the World Trade Organization Technical
nation tests are involved, panel members must have a complete
Barriers to Trade (TBT) Committee.
understanding of the nature of the judgements required, the test
procedures, and test controls required. During the training
2. Referenced Documents
2 period, panelists should examine both acceptable and unac-
2.1 ASTM Standards:
ceptable products to become familiar with the range of
D86 Test Method for Distillation of Petroleum Products and
acceptability.
Liquid Fuels at Atmospheric Pressure
E133 Specification for Distillation Equipment
6. Procedure A—Characteristic and Residual Odors by
Evaporation
3. Significance and Use
6.1 Apparatus:
3.1 These test methods are intended to provide procedures
6.1.1 Rapid Qualitative Filter Paper, 2.5 cm by 7.5 cm
that may be used to evaluate denatured and undenatured
strips, odor-free.
alcohols with 1 to 3 carbon atoms for characteristic and
6.1.2 Glass Containers, odor-free, with fitted closures.
residual odors that will affect their end use.
6.2 Sample Preparation—Each panelist dips separate strips
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of the filter paper to a depth of 5.0 cm into the sample and
These test methods are under the jurisdiction of ASTM Committee E18 on
Sensory Evaluation and are the direct responsibility of Subcommittee E18.06 on
standard, which are provided in suitable, clean, odor-free glass
Food and Beverage Evaluation.
containers with fitted closures.
Current edition approved March 1, 2022. Published March 2022. Originally
approved in 1981. Last previous edition approved in 2004 as E769 – 85 (2004)
6.3 Sample Evaluation:
which was withdrawn August 2011 and reinstated in March 2022.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Selection and Training of Sensory Evaluation Panels. ASTM STP 758, ASTM
the ASTM website. International, 1981.
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E769 − 22
6.3.1 For characterization, after wetting the filter papers, 8.2 Sam
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