ASTM D1363-06(2011)
(Test Method)Standard Test Method for Permanganate Time of Acetone and Methanol
Standard Test Method for Permanganate Time of Acetone and Methanol
SIGNIFICANCE AND USE
The permanganate time can be used to judge the presence of oxidizable materials that may be associated with manufacture or contamination during distribution and to assess compliance with a specification.
Many chemical processes that use acetone or methanol, or both, involve catalyst, metals, or ligand complexes that are sensitive to oxidation. Since oxidizable contaminants may affect the efficiency of these processes, this test method provides a comparative test for manufacturing control and assessing compliance with a specification.
SCOPE
1.1 This test method covers the detection in acetone and methanol of the presence of impurities that reduce potassium permanganate.
1.2 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.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 For specific hazard information and guidance, consult the supplier's Material Safety Data Sheet.
1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D1363 − 06 (Reapproved 2011)
Standard Test Method for
Permanganate Time of Acetone and Methanol
This standard is issued under the fixed designation D1363; 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 Department of Defense.
1. Scope* Methods for Analysis and Testing of Industrial and Spe-
cialty Chemicals (Withdrawn 2009)
1.1 This test method covers the detection in acetone and
E346 Test Methods for Analysis of Methanol
methanol of the presence of impurities that reduce potassium
permanganate.
3. Summary of Test Method
1.2 For purposes of determining conformance of an ob-
3.1 Substances reacting with potassium permanganate in
served or a calculated value using this test method to relevant
neutral solutions reduce it to manganese dioxide which colors
specifications, test result(s) shall be rounded off “to the nearest
the solution yellow. In the permanganate test the time required
unit” in the last right-hand digit used in expressing the
for the color of the test solution to change to that of a standard
specification limit, in accordance with the rounding-off method
solution is measured. The color of the test solution changes
of Practice E29.
from pink-orange to yellow-orange.
1.3 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
4. Significance and Use
only.
4.1 The permanganate time can be used to judge the
1.4 For specific hazard information and guidance, consult
presence of oxidizable materials that may be associated with
the supplier’s Material Safety Data Sheet.
manufacture or contamination during distribution and to assess
compliance with a specification.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4.2 Many chemical processes that use acetone or methanol,
responsibility of the user of this standard to establish appro-
or both, involve catalyst, metals, or ligand complexes that are
priate safety and health practices and determine the applica-
sensitive to oxidation. Since oxidizable contaminants may
bility of regulatory limitations prior to use.
affect the efficiency of these processes, this test method
provides a comparative test for manufacturing control and
2. Referenced Documents
assessing compliance with a specification.
2.1 ASTM Standards:
5. Apparatus
D329 Specification for Acetone
D1152 Specification for Methanol (Methyl Alcohol)
5.1 Color Comparison Tubes—Matched 50-mL, tall form
D1193 Specification for Reagent Water
Nessler tubes, provided with ground on, optically clear, glass
D1209 Test Method for Color of Clear Liquids (Platinum-
caps.
Cobalt Scale)
5.2 Constant-Temperature Bath, capable of maintaining a
E29 Practice for Using Significant Digits in Test Data to
temperatureof15.0 60.5°Corof25.0 60.5°C.Itisimportant
Determine Conformance with Specifications
that the constant-temperature bath be protected from direct
E180 Practice for Determining the Precision of ASTM
light. If a glass constant-temperature bath is employed, it
should be wrapped or coated with an opaque material.
5.3 Pipet, capable of delivering 2.0 mL of solution.
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
5.4 Interval Timer and Clock, capable of measuring a time
Subcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates.
interval of 120 min or more. An alarm arrangement may be
Current edition approved Feb. 1, 2011. Published February 2011. Originally
approved in 1955. Last previous edition approved in 2006 as D1363 – 06. DOI:
desirable.
10.1520/D1363-06R11.
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
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
*A Summary of Changes section appears at the end of this standard
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D1363 − 06 (2011)
6. Reagents in.) below the top of the tube. When the specimen has reached
the specified temperature, bring the level to the 50-mL mark.
6.1 Reagent-grade chemicals shall be used in all tests.
With a pipet, add 2 mL of the KMnO solution. Stopper the
Unless otherwise indicated, it is intended that all reagents shall
tube, invert once to mix the contents, return to the bath and
conform to the specifications of the Committee on Analytical
note the time.At the end of the minimum time specified for the
Reagents of the American Chemical Society, where such
material being tested, remove the tube and compare it to the
specifications are available. Other grades may be used, pro-
color standard by viewing downward through the tube against
vided it is first ascertained that the reagent is of sufficiently
a white background from which diffused white light is re-
high purity to permit its use without lessening the accuracy of
flected.
the determination.
6.2 Unless otherwise indicated, references to water shall be 8. Report
understood to mean reagent water conforming to Type IV of
8.1 Report the following information:
Specification D1193.
8.1.1 If the residual pink
...
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