ASTM D6258-98(2003)e1
(Test Method)Standard Test Method for Determination of Solvent Red 164 Dye Concentration in Diesel Fuels
Standard Test Method for Determination of Solvent Red 164 Dye Concentration in Diesel Fuels
SCOPE
1.1 This test method covers the procedure for determining the concentration of dye Solvent Red 164 in commercially available diesel and burner fuels using visible spectroscopy. Note 1
This test method is suitable for all No. 1 and No. 2 grades in Specifications D 396 and D 975 and for grades DMA and DMB in Specification D 2069.
1.2 The concentration ranges specified for the calibration standards are established in response to the Internal Revenue Service dyeing requirements which state that tax-exempt diesel fuel satisfies the dyeing requirement only if it contains the dye Solvent Red 164 (and no other dye) at a concentration spectrally equivalent to 3.9 lb of the solid dye standard Solvent Red 26 per thousand bbl (11.1 mg/L) of diesel fuel.
1.3 The values stated in SI units are to be regarded as the standard.
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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An American National Standard
e1
Designation:D6258–98 (Reapproved 2003)
Standard Test Method for
Determination of Solvent Red 164 Dye Concentration in
Diesel Fuels
This standard is issued under the fixed designation D 6258; 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.
e NOTE—Warning notes were editorially moved into the standard text in November 2003.
1. Scope E 169 Practices for General Techniques of Ultraviolet-
Visible Quantitative Analysis
1.1 This test method covers the procedure for determining
E 275 Practice for Describing and Measuring Performance
the concentration of dye Solvent Red 164 in commercially
of Ultraviolet, Visible, and Near Infrared Spectrophotom-
available diesel and burner fuels using visible spectroscopy.
eters
NOTE 1—This test method is suitable for all No. 1 and No. 2 grades in
E 288 Specification for Laboratory Glass Volumetric Flasks
Specifications D 396 and D 975 and for grades DMA and DMB in
E 691 Practice for Conducting an Interlaboratory Study to
Specification D 2069.
Determine the Precision of a Test Method
1.2 The concentration ranges specified for the calibration
E969 SpecificationforGlassVolumetric(Transfer)Pipettes
standards are established in response to the Internal Revenue
2.2 Other Document:
Servicedyeingrequirementswhichstatethattax-exemptdiesel
26 CFR 48.4082-1(b) Federal Excise Tax Regulation
fuel satisfies the dyeing requirement only if it contains the dye
3. Terminology
Solvent Red 164 (and no other dye) at a concentration
spectrally equivalent to 3.9 lb of the solid dye standard Solvent
3.1 Definitions:
Red 26 per thousand bbl (11.1 mg/L) of diesel fuel.
3.1.1 For definitions of terms used in this test method, refer
1.3 The values stated in SI units are to be regarded as the
to Terminology E 131.
standard.
4. Summary of Test Method
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4.1 The absorbance of each sample is recorded over a
responsibility of the user of this standard to establish appro-
specified wavelength range, and the scan is analyzed using
priate safety and health practices and determine the applica-
derivative analysis software to determine the dye concentra-
bility of regulatory limitations prior to use.
tion.
4.2 Derivative analysis methodology is employed to mini-
2. Referenced Documents
mize interferences caused by variations in the color and
2.1 ASTM Standards:
composition of the fuel samples regularly tested using this test
D 396 Specification for Fuel Oils
method.
D 975 Specification for Diesel Fuel Oils
4.2.1 Naturally occurring diesel test fuels range in color
D 2069 Specification for Marine Fuels
from water white to nearly black, and many of the samples
D 3699 Specification for Kerosine
tested using this test method have also had used oils and other
D 4057 Practice for Manual Sampling of Petroleum and
products blended with them. These variations in color and
Petroleum Products
composition have a significant effect upon absorbance charac-
E 131 Terminology Relating to Molecular Spectroscopy
teristics of the samples in the region of the visible spectrum
where azo dyes absorb. Standard operating procedures to
correct for these background variations would involve running
This test method is under the jurisdiction of ASTM Committee D02 on
a neat (undyed) sample and subtracting out the background
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
absorbance. In most situations involved with the application of
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Materials.
this test method, however, neat material is not available, so no
Current edition approved Nov. 1, 2003 . Published November 2003. Originally
e1
approved in 1998. Last previous edition approved in 1998 as D 6258–98 .
background corrections can be made.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.2.2 The second derivative of the absorbance of these dyes
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in the visible region is a function of the fine structure of the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. dye’s absorbance peak (versus its height or area) and is
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D6258–98 (2003)
equivalent results. Equivalence can be demonstrated by successful (within
relatively unaffected by changes in background absorbance.
reproducibility limits) participation in inter- or intra-laboratory studies
Further, the specific sections (maxima and minima) of the
using this test method.
second derivative spectra employed for this analysis are a
6.1.1 For applicable general techniques and methods of
function of the fine structure of the top of the absorbance curve
testing spectrophotometers to be used in this test method, refer
which has been found to be unique to the azo dyes.
to Practices E 169 and E 275.
6.2 Sample Cells (Cuvettes), one or more fused silica or
5. Significance and Use
glass cells having sample path length of 1.0 cm.
5.1 This test method was developed to provide for the
6.3 Analytical Balance, 0.1 mg sensitivity, 60.05 mg pre-
enforcement of 26 CFR 48.4082-1(b), which mandates that all
cision.
tax-exemptdieselfuelsbedyedwithanamountofSolventRed
6.4 Volumetric Pipettes, 1, 2, 3, 4, and 5 mL, Class A,
164 at a concentration that is spectrally equivalent to 3.9 lb/10
according to Specification E 969.
bbl(11.1mg/L)ofSolventRed26.Itisemployedtoverifythat
6.5 Volumetric Flasks, 100 mL and 250 mL, Class A,
the correct amount of Solvent Red 164 is being added to
borosilicate glass, according to Specification E 288.
tax-exempt product at terminals or refineries prior to sale, and
to detect the presence of Solvent Red 164 in taxed product
7. Reagents
intended for on-road use.
7.1 Purity of Reagents—Reagent grade chemicals shall be
5.1.1 Solvent Red 26 is the azo dye shown in Fig. 1. It is the
used in all tests. Unless otherwise indicated, it is intended that
standard against which the concentration of Solvent Red 164 is
all reagents shall conform to the specifications of the Commit-
measured because it is available in a certified pure form.
tee on Analytical Reagents of the American Chemical Society
Solvent Red 164 is identical in structure to Solvent Red 26
where such specifications are available. Other grades may be
except that it has hydrocarbon (alkyl) chains incorporated to
used, provided it is first ascertained that the reagent is of
increase its solubility in diesel and burner fuels. The exact
sufficiently high purity to permit its use without lessening the
composition of Solvent Red 164 will vary from manufacturer
accuracy of the determination.
to manufacturer and lot to lot depending upon the extent of
7.2 Solvent Red 26 (Dye Standard)—Dye, Color Index
alkylation that occurs during production; however, its visible
Solvent Red 26, 1-[[2,5-dimethyl-4-[(2-methylphenyl)
spectrum is virtually identical to the spectrum of Solvent Red
azo]phenyl]azo]-2-naphthol, Chemical Abstract Services Reg-
26. Solvent Red 164 is employed in the field (instead of
istry No. 4477-79-6, dry powder with certified purity, and
Solvent Red 26) to dye tax-exempt diesel and burner fuels
maximum absorbance at 512 6 20 nm.
because of its higher solubility and relatively low cost.
7.3 Kerosine—1-K, water-white, conforming to Specifica-
tion D 3699, and having a maximum absorbance against air of
6. Apparatus
0.08 absorbance units over the wavelength range 450 to 750
6.1 Spectrophotometer, equipped with automated scanning,
nm (1.0 cm cell, 120 nm/min scan rate, slit width 1.0 nm).
backgroundcorrection,andelectronicdatastoragecapabilities,
(Warning—Flammable; harmful if swallowed, inhaled, or
and the ability to automatically record absorbance or transmit-
brought into contact with skin or eyes.)
tance of solutions in the spectral region from 400 to 800
7.4 Xylene—(Warning—Extremely flammable; harmful if
nanometers (nm) with a spectral slit width of 1.0 nm or less
swallowed, inhaled, or brought into contact with skin o
...
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