ASTM D2613-85(1994)e1

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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e1
Designation: D 2613 – 85 (Reapproved 1994)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for Calcium or Zinc in Paint Driers by
EDTA Method
This standard is issued under the fixed designation D 2613; 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.
e NOTE—Section 11 was editorially corrected in June 1994.
1. Scope 5. Apparatus
1.1 This test method covers a titrimetric determination of 5.1 Centrifuge, capable of developing 1000 to 2000 g.
calcium in liquid calcium driers and zinc in liquid zinc driers
6. Reagents
that can be dissolved in a toluene-alcohol mixture and utilizes
the disodium salt of ethylenediaminetetraacetic acid dihydrate 6.1 Purity of Reagents—Reagent grade chemicals shall be
used in all tests. Unless otherwise indicated, it is intended that
(EDTA).
1.2 This test method is not applicable to drier blends. all reagents shall conform to the specifications of the Commit-
1.3 All cations that can be titrated with EDTA in alkaline tee on Analytical Reagents of the American Chemical Society,
where such specifications are available. Other grades may be
media interfere and must not be present in the sample.
1.4 This standard does not purport to address all of the used, provided it is first ascertained that the reagent is of
sufficiently high purity to permit its use without lessening the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- accuracy of the determination.
6.2 Purity of Water—Unless otherwise indicated, references
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. to water shall be understood to mean reagent water conforming
to Type II of Specification D 1193.
2. Referenced Documents
6.3 Buffer Solution—Add 350 mL of concentrated ammo-
2.1 ASTM Standards: nium hydroxide (NH OH, sp gr 0.90) to 54 g of ammonium
D 600 Specification for Liquid Paint Driers chloride (NH Cl) and dilute to 1 L with water.
D 1193 Specification for Reagent Water 6.4 EDTA, Standard Solution (0.05 M)—Weigh 18.62 g of
E 180 Practice for Determining the Precision of ASTM EDTA, dissolve in water and dilute to 1 L. Store in a
Methods for Analysis and Testing of Industrial Chemicals polyethylene or borosilicate glass bottle.
E 300 Practice for Sampling Industrial Chemicals 6.5 Indicator Mixture—Triturate 0.2 g of Eriochrome
Black-T and 100 g of sodium chloride (NaCl) and store the
3. Summary of Test Method
mixture in a tightly stoppered bottle. This mixture remains
3.1 The liquid calcium or zinc drier is dissolved in toluene stable for several years.
and ethyl alcohol and treated with an excess of standard EDTA
6.6 Zinc Chloride, Standard Solution (0.05 M)—Weigh
solution. The excess is titrated with a standard zinc chloride 3.2690 g of zinc metal to 0.5 mg and dissolve in 50 mL of
solution using Eriochrome Black-T as the indicator. dilute hydrochloric acid (14 mL of concentrated HCl (sp gr
1.42) to 36 mL of water). Warm if necessary. Dilute to 1 L in
4. Significance and Use
a volumetric flask.
4.1 This test method may be used to confirm the stated
7. Sampling
calcium or zinc content of pure liquid calcium or zinc driers
soluble in toluene-alcohol and manufactured for use by the 7.1 Take a small sample of liquid drier from bulk using the
coatings industry.
procedures in Practice E 300 appropriate for the size of the
container: Section 19 for tanks and tank cars or Section 23 for
drums and cans.
1 NOTE 1—Liquid driers are normally homogeneous so that only simple
This test method is under the jurisdiction of ASTM Committee D-1 on Paint
and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
Reagent Chemicals, American Chemical Society Specifications, American
Current edition approved Nov. 29, 1985. Published January 1986. Originally
Chemical Society, Washington, DC. For suggestions on the testing of reagents not
published as D 2613 – 67 T. Last previous edition D 2613 – 79.
listed by the American Chemical Society, see Analar Standards for Laboratory
Annual Book of ASTM Standards, Vol 06.04.
Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Annual Book of ASTM Standards, Vol 11.01.
and Natio
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