ASTM D1612-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D1612–05
Standard Test Method for
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Acetone in Methanol
This standard is issued under the fixed designation D1612; 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* carbonyl compounds are quantified by comparison to a known
standard of acetone solution.
1.1 This test method covers a procedure for detecting the
4.2 Carbonyl compounds may be present as a result of
presence of acetone in methanol in amounts greater than 0.003
contamination during storage, distribution, or manufacture.
weight %.
This test method may be used in assessing compliance with a
1.2 The values stated in SI units are to be regarded as
specification.
standard. No other units of measurement are included in this
standard.
5. Apparatus
1.3 For purposes of determining conformance of an ob-
5.1 Volumetric Pipets, 1, 4, and 5-mL capacity.
served or a calculated value using this test method to relevant
5.2 Test Tubes, matched for color, 1.5 by 15 cm.
specifications, test result(s) shall be rounded off “to the nearest
unit” in the last right-hand digit used in expressing the
6. Reagents
specification limit, in accordance with the rounding-off method
6.1 Reagent grade chemicals shall be used in all tests.
of Practice E29.
Unless otherwise indicated, it is intended that all reagents shall
1.4 This standard does not purport to address all of the
conform to the specifications of the Committee on Analytical
safety concerns, if any, associated with its use. It is the
Reagents of the American Chemical Society, where such
responsibility of the user of this standard to establish appro-
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specifications are available. Other grades may be used, pro-
priate safety and health practices and determine the applica-
vided it is first ascertained that the reagent is of sufficiently
bility of regulatory limitations prior to use.
high purity to permit its use without lessening the accuracy of
1.5 For hazard information and guidance, see the supplier’s
the determination.
Material Safety Data Sheet.
6.2 Unless otherwise indicated, references to water shall be
2. Referenced Documents understood to mean reagent water conforming to Type IV of
2 Specification D1193. It is essential that the reagent water be
2.1 ASTM Standards:
free of ammonia.
D1193 Specification for Reagent Water
6.3 Acetone Standard—Pipet 6.0 mL of acetone into a 1-L
E29 Practice for Using Significant Digits in Test Data to
volumetric flask and dilute with water to the 1-L mark. Take
Determine Conformance with Specifications
1.0 mLof the resulting solution and make up to 1 Lwith water
3. Summary of Test Method in a volumetric flask. Five millilitres of this solution contain
0.024 mg of acetone. Under conditions outlined for this test
3.1 The specimen is reacted with Nessler’s reagent and the
method, the standard made up for comparison is equivalent to
turbidity that is produced is compared to a standard containing
a methanol specimen containing 0.003 weight % of acetone.
the equivalent of 0.003 weight % of acetone.
6.4 Nessler’s Reagent:
4. Significance and Use
6.4.1 Solution A—Dissolve 270 g of sodium hydroxide
(NaOH) pellets in water and dilute to 1 L.
4.1 This test method can be used to detect residual amounts
6.4.2 Solution B—Dissolve 36 g of potassium iodide (KI)
of carbonyl compounds in synthetic and natural methanol. The
crystals and 13.6 g of mercuric chloride (HgCl ) powder in
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water and dilute to 500 mL. To prepare the Nessler’s reagent,
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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 May 15, 2005. Published May 2005. Originally
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approved in 1958. Last previous edition approved in 1999 as D1612 – 95 (1999). Reagent Chemicals, American Chemical Society Specifications, American
DOI: 10.1520/D1612-05. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or listed by the American Chemical Society, see Analar Standards for Laboratory
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Standards volume information, refer to the standard’s Document Summary page on and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
the ASTM website. MD.
*A Summary of Changes section appears at the end of this standard.
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