ASTM D521-02

Standard Test Methods for Chemical Analysis of Zinc Dust (Metallic Zinc Powder)

SCOPE
1.1 These test methods cover procedures for the chemical analysis of metallic zinc powder in the form commercially known as zinc dust for use as a pigment in paints.
1.2 The analytical procedures appear in the following order: SectionsMoisture and Other Volatile Matter7Coarse Particles8Matter Soluble in Hexane9 and 10Total Zinc11 and 12Metallic Zinc13 and 14Zinc Oxide15Calcium16 and 17Lead18Iron19Cadmium20Chlorine21 and 22Sulfur23 and 24
1.3 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.

General Information

• Status: Historical
• Publication Date: 09-Jan-2002
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.31 - Pigment Specifications

Relations

• Replaces: ASTM D521-90(1999) - Standard Test Methods for Chemical Analysis of Zinc Dust (Metallic Zinc Powder)
• Effective Date: 10-Jan-2002
• Replaced By: ASTM D521-02(2007) - Standard Test Methods for Chemical Analysis of Zinc Dust (Metallic Zinc Powder)
• Effective Date: 01-Jun-2007
• Referred By: ASTM D520-00(2019) - Standard Specification for Zinc Dust Pigment
• Effective Date: 10-Jan-2002
• Referred By: ASTM D6580-17(2023) - Standard Test Method for The Determination of Metallic Zinc Content in Both Zinc Dust Pigment and in Cured Films of Zinc-Rich Coatings
• Effective Date: 10-Jan-2002
• Referred By: ASTM D126-87(2023) - Standard Test Methods for Analysis of Yellow, Orange, and Green Pigments Containing Lead Chromate and Chromium Oxide Green
• Effective Date: 10-Jan-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D521–02
Standard Test Methods for
1
Chemical Analysis of Zinc Dust (Metallic Zinc Powder)
This standard is issued under the fixed designation D 521; 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.
5
1. Scope Films of Zinc-Rich Coatings
E 40 Test Method for Chemical Analysis of Slab Zinc
1.1 These test methods cover procedures for the chemical
6
(Spelter)
analysis of metallic zinc powder in the form commercially
E 68 Method for Polarographic Determination of Lead and
known as zinc dust for use as a pigment in paints.
7
Cadmium in Zinc
1.2 The analytical procedures appear in the following order:
Sections
3. Significance and Use
Moisture and Other Volatile Matter 7
Coarse Particles 8
3.1 These test methods compile procedures which can be
Matter Soluble in Hexane 9 and 10
used to check the composition of purity of metallic zinc
Total Zinc 11 and 12
powder. This information is useful to both the formulator and
Metallic Zinc 13 and 14
Zinc Oxide 15
users.
Calcium 16 and 17
Lead 18
4. Treatment of Sample
Iron 19
Cadmium 20
4.1 Store the laboratory sample in a tightly stoppered bottle
Chlorine 21 and 22
to protect it from oxidation. Mix the whole sample thoroughly
Sulfur 23 and 24
before taking portions for analysis.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 5. Purity of Reagents
responsibility of the user of this standard to establish appro-
5.1 Purity of Reagents—Unless otherwise indicated, it is
priate safety and health practices and determine the applica-
intended that all reagents shall conform to the specifications of
bility of regulatory limitations prior to use.
theCommitteeonAnalyticalReagentsoftheAmericanChemi-
8
cal Society, where such specifications are available. Other
2. Referenced Documents
grades may be used, provided it is first ascertained that the
2.1 ASTM Standards:
reagent is of sufficiently high purity to permit its use without
2
B 214 Test Method for Sieve Analysis of Metal Powders
lessening the accuracy of the determination.
D 185 Test Methods for Coarse Particles in Pigments,
5.2 Purity of Water—Unless otherwise indicated, references
3
Pastes, and Paints
to water shall be understood to mean reagent water conforming
D 280 Test Methods for Hygroscopic Moisture (and Other
to Type II of Specification D 1193.
3
Matter Volatile Under the Test Conditions) in Pigments
4
D 1193 Specification for Reagent Water 6. Precision
D 6580 Test Method for The Determination of Metallic
6.1 Precision statements have not been established.
Zinc Content in Both Zinc Dust Pigment and in Cured
5
Annual Book of ASTM Standards, Vol 06.01.
1 6
These test methods are under the jurisdiction of ASTM Committee D01 on Discontinued—See 1993 Annual Book of ASTM Standards, Vol 03.05.
7
Paint and Related Coatings, Materials, and Applications and are the direct Discontinued—See 1979 Annual Book of ASTM Standards, Part 12.
8
responsibility of Subcommittee D01.31 on Pigment Specifications. Reagent Chemicals, American Chemical Society Specifications, American
Current edition approved Jan. 10, 2002. Published March 2002. Originally Chemical Society, Washington, DC. For suggestions on the testing of reagents not
published as D 521 – 39 T. Last previous edition D 521 – 90(1999). listed by the American Chemical Society, see Analar Standards for Laboratory
2
Annual Book of ASTM Standards, Vol 02.05. Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
3
Annual Book of ASTM Standards, Vol 06.03. and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
4
Annual Book of ASTM Standards, Vol 11.01. MD.
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D521
MOISTURE AND OTHER VOLATILE MATTER
W = zinc used (or equivalent to the ZnO used), g,
V =K Fe(CN) solution required for titration of the
1 4 6
7. Procedure
standard, mL, and
7.1 Determine moisture and other volatile matter in accor- B =K Fe(CN) solution required for titration of the
4 6
dance with Method A of Test Methods D 280, except heat the blank, mL.
sample for only 1 h. 11.2 Uranyl Nitrate Indicator Solution— Dissolve5gof
uranyl nitrate (UO (NO ) ·6H O) in 100 mL of water.
2 3 2 2
COARSE PARTICLES
12. Procedure
8. Procedure
12.1 Transfer 0.25 g of the sample to a 400-mL beaker,
8.1 Determine the percent of coarse particles in the pigment
moisten with alcohol, and dissolve in 10 mL of HCl (sp gr
in accordance with Test Methods D 1
...