ASTM D283-13(2019)
(Test Method)Standard Test Methods for Chemical Analysis of Cuprous Oxide and Copper Pigments
Standard Test Methods for Chemical Analysis of Cuprous Oxide and Copper Pigments
SIGNIFICANCE AND USE
3.1 This collection of test methods is used by pigment producers and paint manufacturers for process control, product acceptance, and research and development.
SCOPE
1.1 These test methods cover procedures for the chemical analysis of cuprous oxide and copper pigments.
1.2 The analytical procedures appear in the following order:
Sections
Total Copper
7
Total Reducing Power as Cuprous Oxide
8 and 9
Metallic Copper
10 and 11
Cuprous Oxide
12
Cupric Oxide
13
Metals Other than Copper
14 – 16
Chlorides and Sulfates
17 and 18
Acetone-Soluble Matter
19
Water
20
Stability
21
Coarse Particles
22
Coarse Particles Insoluble in Nitric Acid
23
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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
Relations
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: D283 − 13 (Reapproved 2019)
Standard Test Methods for
1
Chemical Analysis of Cuprous Oxide and Copper Pigments
This standard is issued under the fixed designation D283; 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 D1208 Test Methods for Common Properties of Certain
Pigments
1.1 These test methods cover procedures for the chemical
analysis of cuprous oxide and copper pigments.
3. Significance and Use
1.2 The analytical procedures appear in the following order:
3.1 This collection of test methods is used by pigment
Sections
producers and paint manufacturers for process control, product
Total Copper 7
acceptance, and research and development.
Total Reducing Power as Cuprous Oxide 8 and 9
Metallic Copper 10 and 11
4. Treatment of Sample
Cuprous Oxide 12
Cupric Oxide 13
4.1 Grind dry pigments, if lumpy or not finely ground, to a
Metals Other than Copper 14–16
Chlorides and Sulfates 17 and 18 fine powder and thoroughly mix (Note 1). Large samples may
Acetone-Soluble Matter 19
be thoroughly mixed and a representative portion taken and
Water 20
powderediflumpyornotfinelyground.Inallcasesthoroughly
Stability 21
Coarse Particles 22 mix the sample before taking portions for analysis. Preserve all
Coarse Particles Insoluble in Nitric Acid 23
samples in dry, dark, airtight and completely filled bottles or
1.3 The values stated in SI units are to be regarded as
containers to prevent oxidation. Some commercial copper
standard. No other units of measurement are included in this
oxides appear to segregate or oxidize rather easily. Therefore,
standard.
the thorough mixing of the sample to ensure homogeneity and
therapidhandlingofthesample,whenexposedtolightandair,
1.4 This standard does not purport to address all of the
are extremely important factors in obtaining accurate results
safety concerns, if any, associated with its use. It is the
NOTE 1—It is very important that the sample be thoroughly mixed.
responsibility of the user of this standard to establish appro-
Some samples of cuprous oxide are not homogeneous so are likely to give
priate safety, health, and environmental practices and deter-
trouble when an attempt is made to obtain concordant results. By placing
mine the applicability of regulatory limitations prior to use.
a few grams of a sample on a sheet of white paper and drawing it out with
1.5 This international standard was developed in accor- a spatula, it is frequently found that the sample contains coarse particles
of black scale, along with small balls of bright red cuprous oxide. Thus,
dance with internationally recognized principles on standard-
it may be necessary to pass the pigment through a No. 60 (250-µm) sieve,
ization established in the Decision on Principles for the
break up any lumps of ground pigment by gentle pressure, and grind any
Development of International Standards, Guides and Recom-
coarse particles failing to pass through the sieve. Since oxidation of slight
mendations issued by the World Trade Organization Technical
or even considerable magnitude may take place, these operations should
be performed quickly, avoiding prolonged grinding and exposure to light
Barriers to Trade (TBT) Committee.
and air.
2. Referenced Documents
5. Reagents
2
2.1 ASTM Standards:
5.1 Purity of Reagents—Reagent grade chemicals shall be
D185 Test Methods for Coarse Particles in Pigments
used in all tests. Unless otherwise indicated, it is intended that
D1193 Specification for Reagent Water
all reagents shall conform to the specifications of the Commit-
tee onAnalytical Reagents of theAmerican Chemical Society,
3
1 where such specifications are available. Other grades may be
These test methods are under the jurisdiction of ASTM Committee D01 on
Paint and Related Coatings, Materials, and Applications and are the direct used, provided it is first ascertained that the reagent is of
responsibility of Subcommittee D01.31 on Pigment Specifications.
Current edition approved June 1, 2019. Published June 2019. Originally
3
approved in 1928. Last previous edition approved in 2013 as D283 – 13. DOI: Reagent Chemicals, American Chemical Society Specifications, American
10.1520/D0283-13R19. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
2
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
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