ASTM D1617-22

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: D1617 − 22
Standard Test Method for
Ester Value of Solvents and Thinners
This standard is issued under the fixed designation D1617; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1.1 This test method covers the determination of the ester
value of solvents and thinners used in lacquers and other
3. Summary of Test Method
coatings.
3.1 The specimen is reacted with a measured excess of
1.2 The values stated in SI units are to be regarded as
aqueous potassium hydroxide, using isopropanol as a mutual
standard. No other units of measurement are included in this
solvent if necessary. The amount of potassium hydroxide
standard.
consumed, which is determined by titrating the excess with
1.3 For purposes of determining conformance of an ob-
standard mineral acid, is a measure of the ester originally
served or a calculated value using this test method to relevant
present.
specifications, test result(s) shall be rounded off “to the nearest
3.2 Since this determination is based on an acidimetric
unit” in the last right-hand digit used in expressing the
titration,asuitablecorrectionshouldbeappliediftheacidityof
specification limit, in accordance with the rounding-off method
the sample exceeds the limit of the specification.
of Practice E29.
1.4 For hazard information and guidance, see the supplier’s
4. Significance and Use
Material Safety Data Sheet.
4.1 This test method is useful in determining the assay of
1.5 This standard does not purport to address all of the
solvents and thinners which are esters or solutions of esters of
safety concerns, if any, associated with its use. It is the
carboxylic acid. The ester value is calculated as percent ester.
responsibility of the user of this standard to establish appro-
This test method has its greatest application where the solvent
priate safety, health, and environmental practices and deter-
or thinner is not a pure ester. This test method may be used in
mine the applicability of regulatory limitations prior to use.
assessing compliance to specification.
For a specific hazard statement, see 8.6.
1.6 This international standard was developed in accor-
5. Interferences
dance with internationally recognized principles on standard-
5.1 Organic chlorides, nitriles, and amides may be hydro-
ization established in the Decision on Principles for the
lyzed by the reagent, particularly at 98 °C, and are a possible
Development of International Standards, Guides and Recom-
source of error. Ketones interfere only slightly with this
mendations issued by the World Trade Organization Technical
procedure. Aldehydes consume some alkali, but the error
Barriers to Trade (TBT) Committee.
introduced by small amounts is negligible.
2. Referenced Documents
6. Apparatus
2.1 ASTM Standards:
6.1 Pressure Bottle, 200 to 350-mL capacity, made from
D1193 Specification for Reagent Water
heat-resistant glass.
6.2 Container for Pressure Bottle—Asuitable safety device
This test method is under the jurisdiction of ASTM Committee D01 on Paint
to contain the pressure bottle. A metal container with hinged
and Related Coatings, Materials, andApplications and is the direct responsibility of
top and perforated bottom, a strong synthetic fabric or canvas
Subcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates.
Current edition approved Jan. 1, 2022. Published January 2022. Originally
bag, or a safety shield may be used.
approved in 1958. Last previous edition approved in 2012 as D1617 – 07 (2012)
6.3 Ampoule, 1 or 2-mL capacity.
which was withdrawn January 2021 and reinstated in January 2022. DOI: 10.1520/
D1617-22.
6.4 Weighing Pipet, Lunge or similar type.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.5 Erlenmeyer Flasks, 250-mL glass-stoppered.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 6.6 Buret, 50-mL capacity.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D1617 − 22
6.7 Boiling Water Bath. 8.2 Into each of the flasks or bottles, carefully introduce
25 mL of 1.0 N KOH solution (Note 1) by means of a suitable
7. Reagents
transfer pipet. Use the same pipet for each transfer.
7.1 Purity of Reagents—Reagent grade chemicals shall be
NOTE 1—Do not substitute sodium hydroxide (NaOH) solution. The
used in all tests. Unless otherwise indicated, it is intended that
reaction conditions given in Table 1 are valid only when 1.0 N KOH
solution is used.
all reagents shall conform to the specifications of the Commit-
tee onAnalytical Reagents of theAmerican Chemical Society,
8.3 AddtheamountofisopropylalcoholprescribedinTable
where such specifications are available. Other grades may be
1 but never add more than 40 mL. Stopper and reserve two of
used provided it is first ascertained that the reagent is of
the flasks or bottles for the blank determinations.
sufficiently high purity to permit its use without lessening the
8.4 Into each of the other flasks or bottles introduce an
accuracy of the determination.
amount of sample containing not more than 0.016 mol (16
7.2 Purity of Water—Unless otherwise indicated, references
milliequivalents) of the ester. For substantially pure material,
to water shall be understood to mean reagent water conforming
weigh the specimen to the nearest 0.1 mg, using the amount
to Type IV of Specification D1193.
and procedure specified in Table 1. Stopper the flasks after
7.3 Hydrochloric Acid, Standard (0.5 N)—Prepare 0.5 N addition of the specimen.
hydrochloric acid (HCl) and standardize to four significant
8.5 If a sealed glass ampoule is used, add several pieces of
figures.
fire-polished 8-mm glass rod to each bottle, stopper, and shake
7.4 Isopropyl Alcohol (99 %).
the bottle vigorously to break the ampoule.
7.5 Phenolphthalein Indicator Solution—Dissolve1gof
8.6 Reaction at 98 °C (Warning—Enclose each bottle se-
phenolphthalein in 100 mL of methanol, ethanol, or isopropyl
curely in a suitable
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