ASTM D1209-05e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
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Designation:D1209–05
Standard Test Method for
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Color of Clear Liquids (Platinum-Cobalt Scale)
This standard is issued under the fixed designation D1209; 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 Department of Defense.
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´ NOTE—Updated research report information in Footnote 11 editorially in September 2008.
1. Scope* D365 Guide for Soluble Nitrocellulose Base Solutions
D1193 Specification for Reagent Water
1.1 This test method describes a procedure for the visual
E29 Practice for Using Significant Digits in Test Data to
measurement of the color of essentially light colored liquids
Determine Conformance with Specifications
(Note 1). It is applicable only to materials in which the
E202 Test Methods for Analysis of Ethylene Glycols and
color-producing bodies present have light absorption charac-
Propylene Glycols
teristicsnearlyidenticalwiththoseoftheplatinum-cobaltcolor
E346 Test Methods for Analysis of Methanol
standards used.
NOTE 1—A procedure for estimating color of darker liquids, described 3. Significance and Use
for soluble nitrocellulose base solutions, is given in Guide D365.
3.1 The property of color of a solvent varies in importance
1.2 The values stated in SI units are to be regarded as
with the application for which it is intended, the amount of
standard. No other units of measurement are included in this
color that can be tolerated being dependent on the color
standard.
characteristics of the material in which it is used. The paint,
1.3 For purposes of determining conformance of an ob-
varnish, and lacquer solvents, or diluents commercially avail-
served or a calculated value using this test method to relevant
able on today’s market normally have little or no color. The
specifications, test result(s) shall be rounded off “to the nearest
presence or absence of color in such material is an indication
unit” in the last right-hand digit used in expressing the
of the degree of refinement to which the solvent has been
specification limit, in accordance with the rounding-off method
subjected or of the cleanliness of the shipping or storage
of Practice E29.
container in which it is handled, or both.
1.4 This standard does not purport to address all of the
3.2 For a number of years the term “water-white” was
safety concerns, if any, associated with its use. It is the
considered sufficient as a measurement of solvent color.
responsibility of the user of this standard to establish appro-
Several expressions for defining “water-white” gradually ap-
priate safety and health practices and determine the applica-
pearedanditbecameevidentthatamoreprecisecolorstandard
bility of regulatory limitations prior to use. For specific hazard
was needed. This was accomplished in 1952 with the adoption
statements see Section 6.
of Test Method D1209 using the platinum-cobalt scale. This
1.5 For specific hazard information, see the Material Safety
test method is similar to the description given in Standard
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Data Sheet.
Methods for the Examination of Water and Waste Water and
is referred to by many as “APHA Color.” The preparation of
2. Referenced Documents
these platinum-cobalt color standards was originally described
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2.1 ASTM Standards:
by A. Hazen in the American Chemical Journal in which he
D156 Test Method for Saybolt Color of Petroleum Products
assigned the number 5 (parts per ten thousand) to his platinum-
(Saybolt Chromometer Method)
cobalt stock solution. Subsequently, in their first edition (1905)
of Standard Methods for the Examination of Water, the
American Public Health Association, using exactly the same
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This test method is under the jurisdiction of ASTM Committee D01 on Paint
concentration of reagents, assigned the color designation 500
and Related Coatings, Materials, andApplications and is the direct responsibility of
(parts per million) which is the same ratio. The parts per
Subcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates.
Current edition approved May 15, 2005. Published May 2005. Originally
approved in 1952. Last previous edition approved in 2000 as D1209 – 00. DOI:
10.1520/D1209-05E01.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or StandardMethodsfortheExaminationofWaterandWasteWater,M.Franson,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Ed., American Public Health Assoc., 14th ed., 1975, p. 65.
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Standards volume information, refer to the standard’s Document Summary page on Hazen, A., “New Color Standard for Natural Waters,” American Chemical
the A
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