ASTM D3280-85(2020)

Standard Test Methods for Analysis of White Zinc Pigments

SIGNIFICANCE AND USE
4.1 White zinc pigments find considerable use in white paints, and as such it is useful to formulators and users to be able to monitor the amounts of these pigments in whole paints. It is also of interest to raw material suppliers and paint producers to check the specifications of each pigment.
SCOPE
1.1 These test methods cover procedures for the analysis of white zinc pigments.  
1.2 The analytical procedures appear in the following order:    
Section  
Preparation of Sample  
6    
Zinc Oxide  
Total Zinc, Using Diphenylamine as Internal Indicator  
7    
Total Zinc, Using Uranyl Acetate as External Indicator  
8    
Total Impurities  
9    
Total Sulfur  
10  
Moisture and Other Volatile Matter  
11  
Leaded Zinc Oxide  
Total Lead  
12  
Total Zinc  
13  
Total Sulfur  
14  
Total Impurities  
15  
Moisture and Other Volatile Matter  
16  
Water-Soluble Salts  
17  
Zinc Sulfide  
Zinc Oxide  
18  
Zinc Sulfide  
19  
Water-Soluble Salts  
20  
Moisture and Other Volatile Matter  
21  
Barium Sulfate  
22  
Titanium Dioxide  
23  
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-May-2020
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.31 - Pigment Specifications

Relations

• Refers: ASTM D1394-76(2020) - Standard Test Methods for Chemical Analysis of White Titanium Pigments
• Effective Date: 01-Jun-2020
• Referred By: ASTM D79-86(2020) - Standard Specification for Zinc Oxide Pigments
• Effective Date: 01-Jun-2020
• Referred By: ASTM D1301-91(2020) - Standard Test Methods for Chemical Analysis of White Lead Pigments
• Effective Date: 01-Jun-2020

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3280 − 85 (Reapproved 2020)
Standard Test Methods for
1
Analysis of White Zinc Pigments
This standard is issued under the fixed designation D3280; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2. Referenced Documents
2
1.1 These test methods cover procedures for the analysis of 2.1 ASTM Standards:
white zinc pigments. D280 Test Methods for Hygroscopic Moisture (and Other
Matter Volatile Under the Test Conditions) in Pigments
1.2 The analytical procedures appear in the following order:
D1193 Specification for Reagent Water
Section
D1394 Test Methods for Chemical Analysis of White Tita-
Preparation of Sample 6
Zinc Oxide nium Pigments
Total Zinc, Using Diphenylamine as Internal Indicator 7
E11 Specification for Woven Wire Test Sieve Cloth and Test
Total Zinc, Using Uranyl Acetate as External Indicator 8
Sieves
Total Impurities 9
Total Sulfur 10
Moisture and Other Volatile Matter 11 3. Summary of Test Method
Leaded Zinc Oxide
3.1 Zinc Oxide:
Total Lead 12
Total Zinc 13
3.1.1 Total Zinc—Determined using diphenylamine as an
Total Sulfur 14
internal indicator and also using uranyl acetate as an external
Total Impurities 15
indicator. Total impurities are calculated.
Moisture and Other Volatile Matter 16
Water-Soluble Salts 17
3.1.2 Total Sulfur—Determined as BaSO and calculated to
4
Zinc Sulfide
sulfur.
Zinc Oxide 18
3.1.3 Moisture and Volatile Matter—Determined in accor-
Zinc Sulfide 19
Water-Soluble Salts 20
dance with Method A of Test Methods D280.
Moisture and Other Volatile Matter 21
Barium Sulfate 22 3.2 Leaded Zinc Oxide:
Titanium Dioxide 23
3.2.1 Total Lead—Determined as PbSO and calculated to
4
1.3 The values stated in SI units are to be regarded as the
percent PbO.
standard. The values given in parentheses are for information
3.2.2 Total Zinc—Determined on the filtrate from procedure
only.
in 13.2.1 in accordance with methods in Sections 7 or 8.
3.2.3 Total Sulfur—Determined as BaSO and calculated to
1.4 This standard does not purport to address all of the 4
percent SO .
safety concerns, if any, associated with its use. It is the 3
3.2.4 Total Impurities—Calculatedfromcompositionaldata.
responsibility of the user of this standard to establish appro-
3.2.5 Moisture and Other Volatile Matter—Determined in
priate safety, health, and environmental practices and deter-
accordance with Method A of Test Methods D280.
mine the applicability of regulatory limitations prior to use.
3.2.6 Water Soluble Salts—Determined gravimetrically.
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3.3 Zinc Sulfide:
ization established in the Decision on Principles for the
3.3.1 Total Zinc—Determined using uranyl acetate external
Development of International Standards, Guides and Recom-
indicator in accordance with Section 9.
mendations issued by the World Trade Organization Technical
3.3.2 Zinc Sulfide—Determined in accordance with Sections
Barriers to Trade (TBT) Committee.
8 or 9 and calculating ZnO to ZnS.
3.3.3 Water Soluble Salts—Determined in accordance with
Section 18.
1
These test methods are under the jurisdiction of ASTM Committee D01 on
Paint and Related Coatings, Materials, and Applications and are the direct
2
responsibility of Subcommittee D01.31 on Pigment Specifications. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
CurrenteditionapprovedJune1,2020.PublishedJuly2020.Originallyapproved contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
in 1973. Last previous edition approved in 2014 as D3280 – 85 (2014). DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D3280-85R20. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3280 − 85 (2020)
3.3.4 Moisture—Determined in accordance with Method A mixed and a representative portion taken and powdered if
of Test Methods D280. lumpy or not finely ground. Mix the sample in all cases
3.3.5 Barium Sulfate—The sample is treated with N SO thoroughly before taking specimens for analysis.
2 4
and Na CO and the residue of BaCO is dissolved in NCl and
2 3 3
6.2 Separate pigments from paints or pastes, grind to a fine
(NH )
...