ASTM D2108-97(2001)

Standard Test Method for Color of Halogenated Organic Solvents and Their Admixtures (Platinum-Cobalt Scale)

SCOPE
1.1 This test method covers the visual measurement of the color of halogenated organic solvents and their admixtures. It is valid for values of 50 platinum-cobalt (Pt-Co) units or less.  
1.2 This standard does not purport to address all of the safety problems, 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: 31-Dec-2000
• ICS: 87.060.30 - Solvents
• Technical Committee: D26 - Halogenated Organic Solvents and Fire Extinguishing Agents
• Drafting Committee: D26.04 - Test Methods

Relations

• Replaces: ASTM D2108-97 - Standard Test Method for Color of Halogenated Organic Solvents and Their Admixtures (Platinum-Cobalt Scale)
• Effective Date: 01-Jan-2001
• Replaced By: ASTM D2108-05 - Standard Test Method for Color of Halogenated Organic Solvents and Their Admixtures (Platinum-Cobalt Scale)
• Effective Date: 01-Jun-2005
• Referred By: ASTM D4080-15(2020) - Standard Specification for Trichloroethylene, Technical and Vapor-Degreasing Grade
• Effective Date: 01-Jan-2001
• Referred By: ASTM D5248-04(2020) - Standard Specification for Reclaimed 1,1,2-Trichloro 1,2,2-Trifluoroethane
• Effective Date: 01-Jan-2001
• Referred By: ASTM D5395-03(2023) - Standard Specification for Reclaimed Methylene Chloride
• Effective Date: 01-Jan-2001
• Referred By: ASTM D7673/D7673M-21 - Standard Specification for Halon 1211, Bromochlorodifluoromethane (CF<inf>2</inf>BrCl)
• Effective Date: 01-Jan-2001
• Referred By: ASTM D5386-16 - Standard Test Method for Color of Liquids Using Tristimulus Colorimetry
• Effective Date: 01-Jan-2001
• Referred By: ASTM D6368-06(2023) - Standard Specification for Vapor-Degreasing Solvents Based on <emph type="bdit">normal</emph >-Propyl Bromide and Technical Grade <emph type="bdit">normal</emph >-Propyl Bromide
• Effective Date: 01-Jan-2001
• Referred By: ASTM D4376-15(2020) - Standard Specification for Vapor-Degreasing Grade Perchloroethylene
• Effective Date: 01-Jan-2001
• Referred By: ASTM D7509-09(2021) - Standard Specification for Fluorocarbon Feedstock Grade Chloroform
• Effective Date: 01-Jan-2001
• Referred By: ASTM D5396-04(2020) - Standard Specification for Reclaimed Perchloroethylene
• Effective Date: 01-Jan-2001
• Referred By: ASTM D5632/D5632M-17(2022) - Standard Specification for Halon 1301, Bromotrifluoromethane (CF<inf>3</inf>Br)
• Effective Date: 01-Jan-2001
• Referred By: ASTM D5616-04(2022) - Standard Specification for Reclaimed Trichloroethylene
• Effective Date: 01-Jan-2001
• Referred By: ASTM D5960-03(2023) - Standard Specification for Technical Grade Ethylene Dichloride
• Effective Date: 01-Jan-2001
• Referred By: ASTM D4079-00(2022) - Standard Specification for Vapor-Degreasing Grade Methylene Chloride
• Effective Date: 01-Jan-2001

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:D2108–97(Reapproved 2001)
Standard Test Method for
Color of Halogenated Organic Solvents and
Their Admixtures (Platinum-Cobalt Scale)
This standard is issued under the fixed designation D 2108; 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.
This standard has been approved for use by agencies of the Department of Defense.
TABLE 1 Platinum-Cobalt Color Standards
1. Scope
Color Stock Color Stock
1.1 This test method covers the visual measurement of the
Standard Solution, Standard Solution,
color of halogenated organic solvents and their admixtures. It
Number mL Number mL
is valid for values of 50 platinum-cobalt (Pt-Co) units or less.
51 35 7
1.2 This standard does not purport to address all of the
10 2 40 8
15 3 50 10
safety concerns, if any, associated with its use. It is the
20 4 60 12
responsibility of the user of this standard to establish appro-
25 5 70 14
priate safety and health practices and determine the applica-
30 6 100 20
500 100
bility of regulatory limitations prior to use.
2. Significance and Use
4. Reagents
2.1 Color may be indicative of the quality of the solvent
because any color present is due to the presence of contami-
4.1 Purity of Reagents—Reagent grade chemicals shall be
nants.
used in all tests. Unless otherwise indicated, it is intended that
all reagents shall conform to the specifications of the Commit-
3. Apparatus
tee onAnalytical Reagents of theAmerican Chemical Society,
3.1 Color Comparison Tubes—Matched 50 or 100-mL,
where such specifications are available. Other grades may be
tall-form Nessler tubes, provided with ground-on, optically
used, provided it is first ascertained that the reagent is of
clear, glass caps.
sufficiently high purity to permit its use without lessening the
3.2 Color Comparator—A color comparator constructed to
accuracy of the determination.
permit visual comparison of light transmitted through tall-
4.2 Purity of Water—Unless otherwise indicated, references
form, Nessler tubes in the direction of their longitudinal axes.
to water shall be understood to mean distilled water or water of
The comparator should be constructed so that white light is
equal purity.
passed through or reflected off a white glass plate and directed
4.3 Cobaltous Chloride —(CoCl ·6H O).
2 2
with equal intensity through the tubes and should be shielded
4.4 Hydrochloric Acid (sp gr 1.19)—Concentrated hydro-
so that no light enters the tubes from the side.
chloric acid (HCl).
4.5 Potassium Chloroplatinate —(K PtCl ).
NOTE 1—There are numerous colorimeters and comparators commer- 2 6
cially available that measure the color of liquids and take some of the
5. Preparation of Color Standards
subjectivity out of the measurement. These instruments may be calibrated
with the platinum-cobalt color standards listed inTable 1 or with optically
5.1 Platinum-Cobalt Stock Solution—Dissolve 1.245 g of
standardized color filter disks such as those available for the HelligeAqua
K PtCl and 1.000 g of CoCl ·6H O in water.Add 100 mLof
2 6 2 2
Tester.Manyoftheseinstrumentstakethemeasurementacrossarelatively
HCl (sp gr 1.19) and dilute to 1 Lwith water. This solution has
narrow range of wave lengths, and their readings may be in error if the
a color of 500.
color of the sample is significantly different from the amber color of the
color standards.
Reagent Chemicals, American Chemical Society Specifications, American
This test method is under the jurisdiction of ASTM Committee D26 on Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Halogenated Organi
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