ASTM D2193-97(2001)

Standard Test Method for Hydroquinone in Vinyl Acetate

SCOPE
1.1 This test method covers the determination of hydroquinone in the range from 1 to 20 ppm in refined, commercially available, vinyl acetate.  
1.2 This standard does not purport to address all of the safety problems, 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.

General Information

• Status: Historical
• Publication Date: 31-Dec-2000
• ICS: 71.080.99 - Other organic chemicals
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.35 - Solvents, Plasticizers, and Chemical Intermediates

Relations

• Replaces: ASTM D2193-97 - Standard Test Method for Hydroquinone in Vinyl Acetate
• Effective Date: 01-Jan-2001
• Replaced By: ASTM D2193-06 - Standard Test Method for Hydroquinone in Vinyl Acetate
• Effective Date: 01-Jun-2006
• Referred By: ASTM D2190-07(2021) - Standard Specification for Vinyl Acetate
• Effective Date: 01-Jan-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D2193–97 (Reapproved 2001)
Standard Test Method for
Hydroquinone in Vinyl Acetate
This standard is issued under the fixed designation D 2193; 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 6. Reagents
1.1 This test method covers the determination of hydro- 6.1 Purity of Reagents—Reagent grade chemicals shall be
quinoneintherangefrom1to20ppminrefined,commercially used in all tests. Unless otherwise indicated, it is intended that
available, vinyl acetate. all reagents shall conform to the specifications of the Commit-
1.2 This standard does not purport to address all of the tee onAnalytical Reagents of theAmerican Chemical Society,
safety concerns, if any, associated with its use. It is the where such specifications are available. Other grades may be
responsibility of the user of this standard to establish appro- used provided it is first ascertained that the reagent is of
priate safety and health practices and determine the applica- sufficiently high purity to permit its use without lessening the
bility of regulatory limitations prior to use. accuracy of the determination.
1.3 For hazard information and guidance, see the supplier’s 6.2 Purity of Water—Unless otherwise indicated, references
Material Safety Data Sheet. to water shall be understood to mean reagent water conforming
to Type IV of Specification D 1193.
2. Referenced Documents
6.3 Ceric Acid Sulfate, Standard Solution (0.002 N)—
2.1 ASTM Standards: Dissolve 1.096 g of ceric ammonium nitrate ((NH ) -
4 2
D 1193 Specification for Reagent Water
Ce(NO ) ) in 28.0 mLof concentrated sulfuric acid (H SO ,sp
3 6 2 4
gr 1.84) contained in a 50-mL beaker. Slowly pour the ceric
3. Summary of Test Method
solution, while stirring, into 200 mL of water contained in a
3.1 The vinyl acetate is evaporated at room temperature in a
600-mL beaker. When solution is complete, transfer this
stream of inert gas or clean air to minimize the loss of
mixture to a 1000-mL volumetric flask and dilute to the mark
hydroquinone by evaporation. The hydroquinone is dissolved
with water.
in water and titrated with dilute standardized ceric acid sulfate
6.4 Diphenylamine Indicator Solution—Dissolve 0.1 g of
using diphenylamine as indicator.
diphenylamine in 100 mL of H SO (sp gr 1.84) and store this
2 4
solution in a brown glass bottle.
4. Significance and Use
6.5 Hydroquinone Standard—Dissolve 200.0 mg of hydro-
4.1 This test method provides a measurement of inhibitor
quinone, weighed to the nearest 0.1 mg, in water and dilute to
levelinvinylacetate.Theresultsofthesemeasurementscanbe
1000.0 mL in a volumetric flask. This solution is unstable and
used for specification acceptance.
should be discarded after 1 week of normal use.
5. Apparatus
7. Standardization
5.1 Buret, 25-mL, graduated in 0.1-mL subdivisions.
7.1 Pipet 10-mLportions of the hydroquinone standard (see
5.2 Beakers, 50 and 600-mL capacity.
6.5) into each of two 100-mL Erlenmeyer flasks. Add 3 drops
5.3 Volumetric Flask, 1000-mL capacity.
of diphenylamine indicator solution to each flask. Using a
5.4 Erlenmeyer Flasks, 100 and 250-mL capacity.
25-mL buret, titrate the contents of each flask with ceric acid
5.5 Nitrogen Cylinder, or source of clean air.
sulfate solution to a faint blue end point that is permanent for
5.6 Pipets, 10 and 50-mL capacity.
1 3
This test method is under the jurisdiction of ASTM Committee D01 on Paint Reagent Chemicals, American Chemical Society Specifications, American
and Related Coatings, Materials, andApplications and is the direct responsibility of Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Subcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates. listed by the American Chemical Society, see Analar Standards for Laboratory
Current edition approved June 10, 1997. Published September 1997. Original
...