ASTM D6756-10
(Test Method)Standard Test Method for Determination of the Red Dye Concentration and Estimation of the ASTM Color of Diesel Fuel and Heating Oil Using a Portable Visible Spectrophotometer
Standard Test Method for Determination of the Red Dye Concentration and Estimation of the ASTM Color of Diesel Fuel and Heating Oil Using a Portable Visible Spectrophotometer
SIGNIFICANCE AND USE
In the United States, high sulfur content (defined by the United States Environmental Protection Agency (USEPA)) middle distillate products and diesel fuel used for off-road purposes, other than aviation turbine fuel, are required by government agencies to contain red dye. The dye concentration required to be present in high sulfur and off-road diesel products is regulated by the United States Environmental Protection Agency and the United States Internal Revenue Service, respectively.
Some fuels that are readily exchanged in the market have a color specification. The color of the base fuel is masked by the presence of the red dye. This test method provides a means of estimating the base color of Number 1 and Number 2 diesel fuel and heating oil in the presence of red dye.
The test method provides a means to indicate conformance to contractual and legal requirements.
SCOPE
1.1 This test method covers the determination of the red dye concentration of diesel fuel and heating oil and the estimation of the ASTM color of undyed and red-dyed diesel fuel and heating oil. The test method is appropriate for use with diesel fuel and heating oil of Grades 1 and 2 described in Specifications D396, D975, D2880 and D3699. Red dye concentrations are determined at levels equivalent to 0.1 to 20 mg/L of Solvent Red 26 in samples with ASTM colors ranging from 0.5 to 5. The ASTM color of the base fuel of red-dyed samples with concentration levels equivalent to 0.1 to 20 mg/L of Solvent Red 26 is estimated for the ASTM color range from 0.5 to 5. The ASTM color of undyed samples is estimated over the ASTM color range of 0.5 to 5.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D6756 − 10
StandardTest Method for
Determination of the Red Dye Concentration and Estimation
of the ASTM Color of Diesel Fuel and Heating Oil Using a
1
Portable Visible Spectrophotometer
This standard is issued under the fixed designation D6756; 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* D4052Test Method for Density, Relative Density, and API
Gravity of Liquids by Digital Density Meter
1.1 Thistestmethodcoversthedeterminationofthereddye
D4057Practice for Manual Sampling of Petroleum and
concentration of diesel fuel and heating oil and the estimation
Petroleum Products
of the ASTM color of undyed and red-dyed diesel fuel and
D4177Practice for Automatic Sampling of Petroleum and
heating oil. The test method is appropriate for use with diesel
Petroleum Products
fuel and heating oil of Grades 1 and 2 described in Specifica-
D6045Test Method for Color of Petroleum Products by the
tions D396, D975, D2880 and D3699. Red dye concentrations
Automatic Tristimulus Method
aredeterminedatlevelsequivalentto0.1to20mg/LofSolvent
D6708Practice for StatisticalAssessment and Improvement
Red 26 in samples with ASTM colors ranging from 0.5 to 5.
of Expected Agreement Between Two Test Methods that
The ASTM color of the base fuel of red-dyed samples with
Purport to Measure the Same Property of a Material
concentration levels equivalent to 0.1 to 20 mg/L of Solvent
E203Test Method for Water Using Volumetric Karl Fischer
Red 26 is estimated for the ASTM color range from 0.5 to 5.
Titration
The ASTM color of undyed samples is estimated over the
E1655 Practices for Infrared Multivariate Quantitative
ASTM color range of 0.5 to 5.
Analysis
1.2 The values stated in SI units are to be regarded as
E2056Practice for Qualifying Spectrometers and Spectro-
standard. No other units of measurement are included in this
photometers for Use in MultivariateAnalyses, Calibrated
standard.
Using Surrogate Mixtures
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions:
priate safety and health practices and determine the applica-
3.1.1 ASTM color, n—the name of an empirical scale of
bility of regulatory limitations prior to use.
expressing the color of a petroleum liquid darker than Saybolt
2. Referenced Documents color based on a scale of 0.5 (lightest) to 8 Dil (darkest) and
2
determined by Test Method D1500.
2.1 ASTM Standards:
D396Specification for Fuel Oils
3.1.2 surrogate calibration, n—a multivariate calibration
D975Specification for Diesel Fuel Oils
that is developed using a calibration set which consists of
D1500Test Method forASTM Color of Petroleum Products
mixtureswithpre-specifiedandreproduciblecompositionsthat
(ASTM Color Scale)
contain substantially fewer chemical components than the
D2880Specification for Gas Turbine Fuel Oils
samples which will ultimately be analyzed. E2056
D3699Specification for Kerosine
3.1.3 surrogate method, n—a standard test method that is
based on a surrogate calibration. E2056
1
This test method is under the jurisdiction of ASTM Committee D02 on
3.2 Definitions of Terms Specific to This Standard:
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
SubcommitteeD02.05onPropertiesofFuels,PetroleumCokeandCarbonMaterial.
3.2.1 red dye, n—substance that, when added to fuel,
Current edition approved Oct. 1, 2010. Published November 2010. Originally
absorbs green light and imparts a red color to the product. For
approved in 2002. Last previous edition approved in 2009 as D6756–09a. DOI:
this test method, red dyes are:
10.1520/D6756-10.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.2.1.1 product dyes, n—alkyl derivatives of azobenzene-4-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
azo-2-naphthol (methyl derivatives of Color Index No. 26105)
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. which are more soluble in diesel fuel.
*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
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D6756 − 10
3.2.1.2 solvent red 26, n—an azobenzene-4-azo-2-naphthol more than one cell is used for calibration, qualification and
dye of a specific chemical structure that is used to gage the sample measurement, the path length of the cells mus
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:D6756–09a Designation:D6756–10
Standard Test Method for
Determination of the Red Dye Concentration and Estimation
of the ASTM Color of Diesel Fuel and Heating Oil Using a
1
Portable Visible Spectrophotometer
This standard is issued under the fixed designation D6756; 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*
1.1 This test method covers the determination of the red dye concentration of diesel fuel and heating oil and the estimation of
the ASTM color of undyed and red-dyed diesel fuel and heating oil. The test method is appropriate for use with diesel fuel and
heating oil of Grades 1 and 2 described in Specifications D396, D975, D2880 and D3699. Red dye concentrations are determined
at levels equivalent to 0.1 to 20 mg/L of Solvent Red 26 in samples withASTM colors ranging from 0.5 to 5. TheASTM color
of the base fuel of red-dyed samples with concentration levels equivalent to 0.1 to 20 mg/Lof Solvent Red 26 is estimated for the
ASTM color range from 0.5 to 5. The ASTM color of undyed samples is estimated over the ASTM color range of 0.5 to 5.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D396 Specification for Fuel Oils
D975 Specification for Diesel Fuel Oils
D1500 Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)
D2880 Specification for Gas Turbine Fuel Oils
D3699 Specification for Kerosine
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D6045 Test Method for Color of Petroleum Products by the Automatic Tristimulus Method
D6708 Practice for StatisticalAssessment and Improvement of ExpectedAgreement Between Two Test Methods that Purport
to Measure the Same Property of a Material
E203 Test Method for Water Using Volumetric Karl Fischer Titration
E1655 Practices for Infrared Multivariate Quantitative Analysis
E2056 Practice for Qualifying Spectrometers and Spectrophotometers for Use in Multivariate Analyses, Calibrated Using
Surrogate Mixtures
3. Terminology
3.1 Definitions:
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 Dil (darkest) and determined by Test Method D1500.
3.1.2 surrogate calibration, n—a multivariate calibration that is developed using a calibration set which consists of mixtures
with pre-specified and reproducible compositions that contain substantially fewer chemical components than the samples which
will ultimately be analyzed. E2056
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.05 on
Properties of Fuels, Petroleum Coke and Carbon Material.
CurrenteditionapprovedDec.Oct.1,2009.2010.PublishedFebruaryNovember2010.Originallyapprovedin2002.Lastpreviouseditionapprovedin2009asD6756–09a.
DOI: 10.1520/D6756-09a.10.1520/D6756-10.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
---------------------- Page: 1 ----------------------
D6756–10
3.1.3 surrogate method, n—a standard test method that is based on a surrogate calibration. E2056
3.2 Definitions of Terms Specific to This Standard:
3.2.1 red dye, n—substance that, when added to fuel, absorbs green light and imparts a red color to the product. For this test
method, red dyes are:
3.2.1.1 product dyes, n—alkyl derivatives of azobenzene-4-azo-2-naphthol
...
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