ASTM D2375-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D2375–05
Standard Test Method for
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Manganese in Paint Driers by EDTA Method
This standard is issued under the fixed designation D2375; 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 method may be used to confirm the stated manganese content
of pure liquid manganese drier soluble in toluene-alcohol and
1.1 This test method covers a titrimetric determination of
manufactured for use by the coatings industry.
manganese in liquid paint driers that can be dissolved in a
toluene-alcohol mixture and utilizes the disodium salt of
5. Apparatus
ethylenediaminetetraacetic acid dihydrate (EDTA).
5.1 Centrifuge, capable of developing 1000 to 2000 g.
1.2 This test method is not applicable to drier blends.
1.3 All cations that can be titrated with EDTA in alkaline
6. Reagents
media interfere and must not be present in the sample.
6.1 Purity of Reagents—Reagent grade chemicals shall be
1.4 The values stated in SI units are to be regarded as the
used in all tests. Unless otherwise indicated, it is intended that
standard. The values given in parentheses are for information
all reagents shall conform to the specifications of the Commit-
only.
tee onAnalytical Reagents of theAmerican Chemical Society,
1.5 This standard does not purport to address all of the
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where such specifications are available. Other grades may be
safety concerns, if any, associated with its use. It is the
used, provided it is first ascertained that the reagent is of
responsibility of the user of this standard to establish appro-
sufficiently high purity to permit its use without lessening the
priate safety and health practices and determine the applica-
accuracy of the determination.
bility of regulatory limitations prior to use.
6.2 Purity of Water—Unless otherwise indicated, references
to water shall be understood to mean reagent water conforming
2. Referenced Documents
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to Type II of Specification D1193.
2.1 ASTM Standards:
6.3 Ammonium Chloride (NH Cl).
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D600 Specification for Liquid Paint Driers
6.4 Ammonium Hydroxide (sp gr 0.90)—Concentrated am-
D1193 Specification for Reagent Water
monium hydroxide (NH OH).
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E180 Practice for Determining the Precision of ASTM
6.5 l-Ascorbic Acid.
Methods for Analysis and Testing of Industrial and Spe-
6.6 Buffer Solution—Add 350 mLof concentrated NH -OH
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cialty Chemicals
(sp gr 0.90) to 54 g of NH Cl and dilute to 1 L with water.
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E300 Practice for Sampling Industrial Chemicals
6.7 Eriochrome Black-T Indicator—Triturate 0.2 g of Eri-
3. Summary of Test Method ochrome Black-T and 100 g of NaCl, and store the mixture in
a tightly stoppered bottle. This mixture remains stable for
3.1 The liquid drier is dissolved in toluene and ethyl alcohol
several years.
and treated with an excess of standard EDTA solution. The
6.8 Ethyl Alcohol (95 %), pure or denatured.
excess is titrated with standard zinc chloride solution using
6.9 EDTA, Standard Solution (0.05 M)—Dissolve 18.62 g
Eriochrome Black-T as the indicator.
of EDTAin water and dilute to 1 L. Store in a polyethylene or
4. Significance and Use borosilicate glass bottle.
6.10 Hydrochloric Acid (sp gr 1.19)—Concentrated (hydro-
4.1 The amount of manganese drier used in oxidizing-type
chloric acid (HCl).
coatings significantly affects their drying properties. This test
6.11 Sodium Chloride (NaCl).
6.12 Toluene.
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This test method is under the jurisdiction of ASTM Committee D01 on Paint
6.13 Zinc, Granular.
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
Current edition approved Jan. 1, 2005. Published February 2005. Originally
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approved in 1965. Last previous edition approved in 1999 as D2375 – 85 (1999). Reagent Chemicals, American Chemical Society Specifications, American
DOI: 10.1520/D2375-05. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
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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.
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