ASTM D6045-20
(Test Method)Standard Test Method for Color of Petroleum Products by the Automatic Tristimulus Method
Standard Test Method for Color of Petroleum Products by the Automatic Tristimulus Method
SIGNIFICANCE AND USE
5.1 Determination of the color of petroleum products is used mainly for manufacturing control purposes and is an important quality characteristic because color is readily observed by the user of the product. In some cases the color may serve as an indication of the degree of refinement of the material. When the color range of a particular product is known, a variation outside the established range may indicate possible contamination with another product. However, color is not always a reliable guide to product quality and should not be used indiscriminately in product specifications.
SCOPE
1.1 This test method covers the automatic determination of color of a wide variety of petroleum products such as undyed motor and aviation gasoline, aviation turbine fuels, naphthas, kerosine, pharmaceutical white oils, diesel fuel oils, heating oils, and lubricating oils by the automatic tristimulus method. This test method correlates to Test Method D156 and Test Method D1500 as calculated by the instrumentation.
Note 1: With the appropriate sample handling, this test method would apply to petroleum waxes, but they were not used in the round robin, and the precision of this test method with regard to waxes is unknown.
1.2 This test method reports results in terms of Test Method D156 or Test Method D1500.
1.3 This test method has a one-to-one correlation for the entire range of Test Method D1500 ASTM Color and for the range from 0 to +30 for Test Method D156 Saybolt color.
1.4 This test method does not apply to solid samples, petroleum products containing dye, and petroleum products having extreme fluorescence.
1.5 This test method does not apply to cloudy samples. Such samples shall be filtered so they are clear before measuring.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 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.
1.8 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.
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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: D6045 − 20
Standard Test Method for
Color of Petroleum Products by the Automatic Tristimulus
1
Method
This standard is issued under the fixed designation D6045; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This test method covers the automatic determination of
color of a wide variety of petroleum products such as undyed
2. Referenced Documents
motor and aviation gasoline, aviation turbine fuels, naphthas,
2
2.1 ASTM Standards:
kerosine, pharmaceutical white oils, diesel fuel oils, heating
D156Test Method for Saybolt Color of Petroleum Products
oils, and lubricating oils by the automatic tristimulus method.
(Saybolt Chromometer Method)
This test method correlates to Test Method D156 and Test
D1500Test Method forASTM Color of Petroleum Products
Method D1500 as calculated by the instrumentation.
(ASTM Color Scale)
NOTE1—Withtheappropriatesamplehandling,thistestmethodwould
D2500Test Method for Cloud Point of Petroleum Products
apply to petroleum waxes, but they were not used in the round robin, and
and Liquid Fuels
the precision of this test method with regard to waxes is unknown.
D4057Practice for Manual Sampling of Petroleum and
1.2 This test method reports results in terms ofTest Method
Petroleum Products
D156 or Test Method D1500.
E284Terminology of Appearance
E308PracticeforComputingtheColorsofObjectsbyUsing
1.3 This test method has a one-to-one correlation for the
the CIE System
entire range of Test Method D1500 ASTM Color and for the
2.2 Energy Institute Standard:
range from 0 to+30 for Test Method D156 Saybolt color.
3
IP 17Determination of Colour—Lovibond Tintometer
1.4 This test method does not apply to solid samples,
petroleum products containing dye, and petroleum products
3. Terminology
having extreme fluorescence.
3.1 Definitions:
1.5 Thistestmethoddoesnotapplytocloudysamples.Such
3.1.1 ASTM color, n—the name of an empirical scale of
samples shall be filtered so they are clear before measuring. expressing the color of a petroleum liquid darker than Saybolt
color based on a scale of 0.5 (lightest) to 8.0 Dil (darkest) and
1.6 The values stated in SI units are to be regarded as
determined by Test Method D1500.
standard. No other units of measurement are included in this
standard. 3.1.2 CIE—the abbreviation for the French title of the
International Commission on Illumination, or Commission
1.7 This standard does not purport to address all of the
Internationale de l’Eclairage. E284
safety concerns, if any, associated with its use. It is the
3.1.3 CIE Standard Illuminant C, n—Colorimetric
responsibility of the user of this standard to establish appro-
illuminant, representing daylight with a correlated color tem-
priate safety, health, and environmental practices and deter-
perature of 6774K, defined by the CIE in terms of a relative
mine the applicability of regulatory limitations prior to use.
spectral power distribution. E284
1.8 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3.1.4 CIE 1931 standard observer, n—ideal colorimetric
ization established in the Decision on Principles for the
observer with color matching functions x(λ), y(λ), z(λ) corre-
Development of International Standards, Guides and Recom-
spondingtoafieldofviewsubtendinga2°angleontheretina;
commonly called the “2° Standard Observer.” E284
1 2
This practice is under the jurisdiction ofASTM Committee D02 on Petroleum For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcom- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
mittee D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2020. Published June 2020. Originally the ASTM website.
3
approved in 1996. Last previous edition approved in 2017 as D6045–12 (2017). Methods for Analysis Testing, available from Energy Institute, 61 New
DOI: 10.1520/D6045-20. Cavendish St., London, WIG 7AR, U.K.
*A Summary of Changes section appears at the end of this standard
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
1
---------------------- Pag
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6045 − 12 (Reapproved 2017) D6045 − 20
Standard Test Method for
Color of Petroleum Products by the Automatic Tristimulus
1
Method
This standard is issued under the fixed designation D6045; 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 Scope*
1.1 This test method covers the automatic determination of color of a wide variety of petroleum products such as undyed motor
and aviation gasoline, aviation turbine fuels, naphthas, kerosine, pharmaceutical white oils, diesel fuel oils, heating oils, and
lubricating oils by the automatic tristimulus method. This test method correlates to Test Method D156 and Test Method D1500 as
calculated by the instrumentation.
NOTE 1—With the appropriate sample handling, this test method would apply to petroleum waxes, but they were not used in the round robin, and the
precision of this test method with regard to waxes is unknown.
1.2 This test method reports results in terms of Test Method D156 or Test Method D1500.
1.3 This test method has a one-to-one correlation for the entire range of Test Method D1500 ASTM Color and for the range
from 0 to +30 for Test Method D156 Saybolt color.
1.4 This test method does not apply to solid samples, petroleum products containing dye, and petroleum products having
extreme fluorescence.
1.5 This test method does not apply to cloudy samples. Such samples shall be filtered so they are clear before measuring.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.8 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D156 Test Method for Saybolt Color of Petroleum Products (Saybolt Chromometer Method)
D1500 Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)
D2500 Test Method for Cloud Point of Petroleum Products and Liquid Fuels
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
E284 Terminology of Appearance
E308 Practice for Computing the Colors of Objects by Using the CIE System
2.2 Energy Institute Standard:
3
IP 17 Determination of Colour—Lovibond Tintometer
3. Terminology
3.1 Definitions:
1
This practice is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
Current edition approved July 1, 2017May 1, 2020. Published July 2017June 2020. Originally approved in 1996. Last previous edition approved in 20122017 as
D6045 – 12.D6045 – 12 (2017). DOI: 10.1520/D6045-12R17.10.1520/D6045-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Methods for Analysis Testing, available from Energy Institute, 61 New Cavendish St., London, WIG 7AR, U.K.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D6045 − 20
3.1.1 ASTM color, n—the name of an empirical scale of expressing the color of a petroleum liquid darker than Saybolt color
based on a scale of 0.5 (lightest) to 8.0 Dil (darkest) and determined by Test Method D1500.
3.1.2 CIE—the abbreviation for the French title of the International Commission on Illumination, or Commission Internationale
de l’Eclairage. E284
3.1.3 CIE Standard Illuminant C, n—Colorimetric illuminant, representing daylight with a correlated color temperature of
6774
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