ASTM D4815-99e1
(Test Method)Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols in Gasoline by Gas Chromatography
Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, <I>tertiary</I>-Amyl Alcohol and C<sub>1</sub> to C<sub>4</sub> Alcohols in Gasoline by Gas Chromatography
SCOPE
1.1 This test method is designed for the determination of ethers and alcohols in gasolines by gas chromatography. Specific compounds determined are: methyl tert -butylether (MTBE), ethyl tert -butylether (ETBE), tert -amylmethylether (TAME), diisopropylether (DIPE), methanol, ethanol, isopropanol, -propanol, isobutanol, tert -butanol, sec butanol, -butanol, and tert -pentanol ( tert -amylalcohol).
1.2 Individual ethers are determined from 0.1 to 20.0 mass percent. Individual alcohols are determined from 0.1 to 12.0 mass percent. Equations used to convert to mass percent oxygen and to volume % of individual compounds are provided.
1.3 Alcohol-based fuels such as M-85 and E-85, MTBE product, ethanol product and denatured alcohol are specifically excluded from this method. The methanol content of M-85 fuel is considered beyond the operating range of the system.
1.4 Benzene, while detected, cannot be quantified using this test method and must be analyzed by alternate methodology (Test Method D3606 or D4420).
1.5 SI (metric) units are preferred and used throughout this standard. Alternate units, in common usage, are also provided to increase clarity and aid the users of this test method.
1.6 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/i.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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An American National Standard
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Designation: D 4815 – 99
Standard Test Method for
Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl
Alcohol and C to C Alcohols in Gasoline by Gas
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Chromatography
This standard is issued under the fixed designation D 4815; 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.
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e NOTE—Paragraph 14.3 was corrected editorially in October 2001.
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1. Scope Petroleum Products by Hydrometer Method
D 1744 Test Method for Water in Liquid Petroleum Prod-
1.1 This test method covers the determination of ethers and
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ucts by Karl Fischer Reagent
alcohols in gasolines by gas chromatography. Specific com-
D 3606 Test Method for the Determination of Benzene and
pounds determined are methyl tert-butylether (MTBE), ethyl
Toluene in Finished Motor and Aviation Gasoline by Gas
tert-butylether (ETBE), tert-amylmethylether (TAME), diiso-
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Chromatography
propylether (DIPE), methanol, ethanol, isopropanol,
D 4052 Test Method for Density and Relative Density of
n-propanol, isobutanol, tert-butanol, sec-butanol, n-butanol,
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Liquids by Digital Density Meter
and tert-pentanol (tert-amylalcohol).
D 4057 Practice for Manual Sampling of Petroleum and
1.2 Individual ethers are determined from 0.1 to 20.0 mass
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Petroleum Products
%. Individual alcohols are determined from 0.1 to 12.0 mass
D 4307 Practice for Preparation of Liquid Blends for Use as
%. Equations used to convert to mass % oxygen and to volume
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Analytical Standards
% of individual compounds are provided.
D 4420 Test Method for Aromatics in Finished Gasoline by
1.3 Alcohol-based fuels, such as M-85 and E-85, MTBE
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Gas Chromatography
product, ethanol product, and denatured alcohol, are specifi-
cally excluded from this test method. The methanol content of
3. Terminology
M-85 fuel is considered beyond the operating range of the
3.1 Definitions of Terms Specific to This Standard:
system.
3.1.1 low volume connector—a special union for connecting
1.4 Benzene, while detected, cannot be quantified using this
two lengths of tubing 1.6-mm inside diameter and smaller.
test method and must be analyzed by alternate methodology
Sometimes this is referred to as zero dead volume union.
(see Test Method D 3606 or D 4420).
3.1.2 MTBE—methyl tert-butylether.
1.5 The values stated in SI units are to be regarded as
3.1.3 ETBE—ethyl tert-butylether.
standard. Alternate units, in common usage, are also provided
3.1.4 TAME—tert-amyl methylether.
to increase clarity and aid the users of this test method.
3.1.5 DIPE—diisopropylether.
1.6 This standard does not purport to address all of the
3.1.6 tert-amyl alcohol—tert-pentanol.
safety concerns, if any, associated with its use. It is the
3.1.7 oxygenate—any oxygen-containing organic com-
responsibility of the user of this standard to establish appro-
pound that can be used as a fuel or fuel supplement, for
priate safety and health practices and determine the applica-
example, various alcohols and ethers.
bility of regulatory limitations prior to use.
3.1.8 split ratio—in capillary gas chromatography, the ratio
2. Referenced Documents of the total flow of carrier gas to the sample inlet versus the
flow of the carrier gas to the capillary column, expressed by
2.1 ASTM Standards:
D 1298 Test Method for Density, Relative Density (Specific split ratio 5 ~S 1 C!/C (1)
Gravity), or API Gravity of Crude Petroleum and Liquid
where:
S = flow rate at the splitter vent, and
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This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.04 on Hydrocarbon Analysis.
Current edition approved Nov. 10, 1999. Published January 2000. Originally
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Annual Book of ASTM Standards, Vol 05.01.
published as D 4815 – 89. Last previous edition D 4815 – 94a.
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Annual Book of ASTM Standards, Vol 05.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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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 4815
TABLE 1 Pertinent Physical Constants and Retention
C = flow rate at the column outlet.
Characteristics for TCEP/WCOT Column Set Conditions
3.1.9 TCEP—1,2,3-tris-2-cyanoethoxypropane—a gas
as in Table 2
chromatographic liquid phase.
Relative Retention
Relative
3.1.10 WCOT—a type of capillary gas chromatographic
Time
Rete
...
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