ASTM D1612-95(1999)
(Test Method)Standard Test Method for Acetone in Methanol
Standard Test Method for Acetone in Methanol
SCOPE
1.1 This test method covers a procedure for detecting the presence of acetone in methanol in amounts greater than 0.003 weight%.
1.2 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.
1.3 For hazard information and guidance, see the supplier's Material Safety Data Sheet.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D1612–95 (Reapproved 1999)
Standard Test Method for
Acetone in Methanol
This standard is issued under the fixed designation D 1612; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope conform to the specifications of the Committee on Analytical
Reagents of the American Chemical Society, where such
1.1 This test method covers a procedure for detecting the
specifications are available. Other grades may be used, pro-
presence of acetone in methanol in amounts greater than 0.003
vided it is first ascertained that the reagent is of sufficiently
weight %.
high purity to permit its use without lessening the accuracy of
1.2 This standard does not purport to address all of the
the determination.
safety concerns, if any, associated with its use. It is the
6.2 Unless otherwise indicated, references to water shall be
responsibility of the user of this standard to establish appro-
understood to mean reagent water conforming to Type IV of
priate safety and health practices and determine the applica-
Specification D 1193. It is essential that the reagent water be
bility of regulatory limitations prior to use.
free of ammonia.
1.3 For hazard information and guidance, see the supplier’s
6.3 Acetone Standard—Pipet 6.0 mL of acetone into a 1-L
Material Safety Data Sheet.
volumetric flask and dilute with water to the 1-L mark. Take
2. Referenced Documents 1.0 mLof the resulting solution and make up to 1 Lwith water
in a volumetric flask. Five millilitres of this solution contain
2.1 ASTM Standards:
0.024 mg of acetone. Under conditions outlined for this test
D 1193 Specification for Reagent Water
method, the standard made up for comparison is equivalent to
3. Summary of Test Method
a methanol specimen containing 0.003 weight % of acetone.
6.4 Nessler’s Reagent:
3.1 The specimen is reacted with Nessler’s reagent and the
6.4.1 Solution A—Dissolve 270 g of sodium hydroxide
turbidity that is produced is compared to a standard containing
(NaOH) pellets in water and dilute to 1 L.
the equivalent of 0.003 weight % of acetone.
6.4.2 Solution B—Dissolve 36 g of potassium iodide (KI)
4. Significance and Use
crystals and 13.6 g of mercuric chloride (HgCl ) powder in
water and dilute to 500 mL. To prepare the Nessler’s reagent,
4.1 This test method can be used to detect residual amounts
mix three parts of Solution A with 5 parts of Solution B and
of carbonyl compounds in synthetic and natural methanol. The
allow to stand until clear before using.
carbonyl compounds are quantified by comparison to a known
standard of acetone solution.
7. Procedure
4.2 Carbonyl compounds may be present as a result of
7.1 Carefully pipet 1 mL of the sample and 4 mL of water
contamination during storage, distribution, or manufacture.
into one of the matched test tubes and mix thoroughly.
This test method may be used in assessing compliance with a
Carefully pipet 5 mL of the acetone standard into a second
specification.
matchedtesttube.Pipet5mLoftheNessler’sreagentintoeach
5. Apparatus
of the tubes containing the specimen and the acetone standard.
Quickly mix the conte
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