ASTM D6258-98e1
(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 D396 and D975 and for grades DMA and DMB in Specification D2069.
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.
1.4 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: D 6258 – 98 An American National Standard
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—Paragraph 2.1 was corrected editorially in May 1999.
1. Scope of Ultraviolet, Visible, and Near Infrared Spectrophotom-
eters
1.1 This test method covers the procedure for determining
E 288 Specification for Laboratory Glass Volumetric
the concentration of dye Solvent Red 164 in commercially
Flasks
available diesel and burner fuels using visible spectroscopy.
E 691 Practice for Conducting an Interlaboratory Study to
NOTE 1—This test method is suitable for all No. 1 and No. 2 grades in 5
Determine the Precision of a Test Method
Specifications D 396 and D 975 and for grades DMA and DMB in
E 969 Specification for Glass Volumetric (Transfer) Pi-
Specification D 2069.
pettes
1.2 The concentration ranges specified for the calibration
2.2 Other Document:
standards are established in response to the Internal Revenue
26 CFR 48.4082-1(b) Federal Excise Tax Regulation
Service dyeing requirements which state that tax-exempt diesel
fuel satisfies the dyeing requirement only if it contains the dye 3. Terminology
Solvent Red 164 (and no other dye) at a concentration
3.1 Definitions:
spectrally equivalent to 3.9 lb of the solid dye standard Solvent
3.1.1 For definitions of terms used in this test method, refer
Red 26 per thousand bbl (11.1 mg/L) of diesel fuel.
to Terminology E 131.
1.3 The values stated in SI units are to be regarded as the
4. Summary of Test Method
standard.
1.4 This standard does not purport to address all of the
4.1 The absorbance of each sample is recorded over a
safety concerns, if any, associated with its use. It is the
specified wavelength range, and the scan is analyzed using
responsibility of the user of this standard to establish appro-
derivative analysis software to determine the dye concentra-
priate safety and health practices and determine the applica-
tion.
bility of regulatory limitations prior to use.
4.2 Derivative analysis methodology is employed to mini-
mize interferences caused by variations in the color and
2. Referenced Documents
composition of the fuel samples regularly tested using this test
2.1 ASTM Standards:
method.
D 396 Specification for Fuel Oils
4.2.1 Naturally occurring diesel test fuels range in color
D 975 Specification for Diesel Fuel Oils
from water white to nearly black, and many of the samples
D 2069 Specification for Marine Fuels
tested using this test method have also had used oils and other
D 3699 Specification for Kerosine
products blended with them. These variations in color and
D 4057 Practice for Manual Sampling of Petroleum and
composition have a significant effect upon absorbance charac-
Petroleum Products
teristics of the samples in the region of the visible spectrum
E 131 Terminology Relating to Molecular Spectroscopy
where azo dyes absorb. Standard operating procedures to
E 169 Practices for General Techniques of Ultraviolet-
correct for these background variations would involve running
Visible Quantitative Analysis
a neat (undyed) sample and subtracting out the background
E 275 Practice for Describing and Measuring Performance
absorbance. In most situations involved with the application of
this test method, however, neat material is not available, so no
background corrections can be made.
4.2.2 The second derivative of the absorbance of these dyes
This test method is under the jurisdiction of ASTM Committee D-2 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
in the visible region is a function of the fine structure of the
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Materials.
dye’s absorbance peak (versus its height or area) and is
Current edition approved Apr. 10, 1998. Published October 1998.
Annual Book of ASTM Standards, Vol 05.01.
Annual Book of ASTM Standards, Vol 05.02.
4 5
Annual Book of ASTM Standards, Vol 03.06. Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 6258
relatively unaffected by changes in background absorbance. 6.1.1 For applicable general techniques and methods of
Further, the specific sections (maxima and minima) of the testing spectrophotometers to be used in this test method, refer
second derivative spectra employed for this analysis are a to Practices E 169 and E 275.
function of the fine structure of the top of the absorbance curve 6.2 Sample Cells (Cuvettes), one or more fused silica or
which has been found to be unique to the azo dyes. glass cells having sample path length of 1.0 cm.
6.3 Analytical Balance, 0.1 mg sensitivity, 60.05 mg pre-
5. Significance and Use
cision.
5.1 This test method was developed to provide for the
6.4 Volumetric Pipettes, 1, 2, 3, 4 and 5 mL, Class A,
enforcement of 26 CFR 48.4082-1(b), which mandates that all
according to Specification E 969.
tax-exempt diesel fuels be dyed with an amount of Solvent Red
6.5 Volumetric Flasks, 100 mL and 250 mL, Class A,
164 at a concentration that is spectrally equivalent to 3.9 lb/10
borosilicate glass, according to Specification E 288.
bbl (11.1 mg/L) of Solvent Red 26. It is employed to verify that
7. Reagents
the correct amount of Solvent Red 164 is being added to
tax-exempt product at terminals or refineries prior to sale, and 7.1 Purity of Reagents—Reagent grade chemicals shall be
to detect the presence of Solvent Red 164 in taxed product
used in all tests. Unless otherwise indicated, it is intended that
intended for on-road use. all reagents shall conform to the specifications of the Commit-
5.1.1 Solvent Red 26 is the azo dye shown in Fig. 1. It is the
tee on Analytical Reagents of the American Chemical Society
standard against which the concentration of Solvent Red 164 is where such specifications are available. Other grades may be
measured because it is available in a certified pure form.
used, provided it is first ascertained that the reagent is of
Solvent Red 164 is identical in structure to Solvent Red 26 sufficiently high purity to permit its use without lessening the
except that it has hydrocarbon (alkyl) chains incorporated to
accuracy of the determination.
increase its solubility in diesel and burner fuels. The exact 7.2 Solvent Red 26 (Dye Standard)—Dye, Color Index
composition of Solvent Red 164 will vary from manufacturer
Solvent Red 26, 1-[[2,5-dimethyl-4- [(2-methylphenyl)
to manufacturer and lot to lot depending upon the extent of azo]phenyl]azo]-2-naphthol, Chemical Abstract Services Reg-
alkylation that occurs during production; however, its visible istry No. 4477-79-6, dry powder with certified purity, and
spectrum is virtually identical to the spectrum of Solvent Red
maximum absorbance at 512 6 20 nm.
26. Solvent Red 164 is employed in the field (instead of 7.3 Kerosine—1-K, water-white, conforming to Specifica-
Solvent Red 26) to dye tax-exempt diesel and burner fuels
tion D 3699, and having a maximum absorbance against air of
because of its higher solubility and relatively low cost. 0.08 absorbance units over the wavelength range 450 to 750
nm (1.0 cm cell, 120 nm/min scan rate, slit width 1.0 nm.).
6. Apparatus
(Warning—See Note 3.)
6.1 Spectrophotometer, equipped with automated scanning,
NOTE 3—Warning: Flammable; harmful if swallowed, inhaled, or
background correction and electronic data storage capabilities,
brought into contact with skin or eyes.
and the ability to automatically record absorbance or transmit-
tance of solutions in the spectral region from 400 to 800 7.4 Xylene—(Warning—see Note 4).
nanometers (nm) with a spectral slit width of 1.0 nm or less
NOTE 4—Warning: Extremely flammable; harmful if swallowed, in-
(Note 2). Wavelength measurements shall be repeatable and
haled, or brought into contact with skin or eyes.
known to be accurate to within 60.2 nm or less at deuterium
8. Sampling
peak 656.1 nm. In the absorbance range from 0.01 to 1.0,
absorbance measurements shall have a photometric accuracy of
8.1 Use the principles of Practice D 4057 in
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