ASTM D5845-21

Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, Methanol, Ethanol and <emph type="ital">tert</emph>-Butanol in Gasoline by Infrared Spectroscopy

SIGNIFICANCE AND USE
5.1 Alcohols and ethers are added to gasoline to produce a reformulated lower emissions gasoline. Alcohols and ethers may also be added to gasoline to increase the octane number. Type and concentration of various oxygenates are specified and regulated to ensure acceptable commercial gasoline quality. Driveability, vapor pressure, phase separation, and evaporative emissions are some of the concerns associated with oxygenated fuels.  
5.2 This test method is faster, simpler, less expensive and more portable than current methods.  
5.3 This test method may be applicable for quality control in the production of gasoline.  
5.4 This test method is not suitable for testing for compliance with federal regulations.3  
5.5 False positive readings for some of the samples tested in the round robin were sometimes observed. As only extreme base gasolines were tested in the round robin, no definitive statement can be made as to the expected frequency or magnitude of false positives expected in a wider range of base gasolines.
SCOPE
1.1 This test method covers the determination of methanol, ethanol, tert-butanol, methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), tert-amyl methyl ether (TAME), and diisopropyl ether (DIPE) in gasoline by infrared spectroscopy. The test method is suitable for determining methanol from 1.7 % to 5.5 % by mass, ethanol from 1.5 % to 10 % by mass, tert-butanol from 1.6 % to 12 % by mass, DIPE from 1.2 % to 17 % by mass, MTBE from 2.0 % to 16.4 % by mass, ETBE from 2.0 % to 18.5 % by mass, and TAME from 1.5 % to 18.5 % by mass.  
1.2 This test method is applicable to oxygenate(s) in gasoline singularly or in multiple mixtures hereof according to the oxygenates and mass percent ranges given in 1.1.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

General Information

• Status: Published
• Publication Date: 30-Sep-2021
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.04.0F - Absorption Spectroscopic Methods

Standards Content (Sample)

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: D5845 − 21
Standard Test Method for
Determination of MTBE, ETBE, TAME, DIPE, Methanol,
Ethanol and tert-Butanol in Gasoline by Infrared
1
Spectroscopy
This standard is issued under the fixed designation D5845; 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* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers the determination of methanol,
D1298 Test Method for Density, Relative Density, or API
ethanol, tert-butanol, methyl tert-butyl ether (MTBE), ethyl
Gravity of Crude Petroleum and Liquid Petroleum Prod-
tert-butyl ether (ETBE), tert-amyl methyl ether (TAME), and
ucts by Hydrometer Method
diisopropyl ether (DIPE) in gasoline by infrared spectroscopy.
D4052 Test Method for Density, Relative Density, and API
The test method is suitable for determining methanol from
Gravity of Liquids by Digital Density Meter
1.7 % to 5.5 % by mass, ethanol from 1.5 % to 10 % by mass,
D4057 Practice for Manual Sampling of Petroleum and
tert-butanol from 1.6 % to 12 % by mass, DIPE from 1.2 % to
Petroleum Products
17 % by mass, MTBE from 2.0 % to 16.4 % by mass, ETBE
D4307 Practice for Preparation of Liquid Blends for Use as
from 2.0 % to 18.5 % by mass, and TAME from 1.5 % to
Analytical Standards
18.5 % by mass.
D4815 Test Method for Determination of MTBE, ETBE,
TAME, DIPE, tertiary-Amyl Alcohol and C to C Alco-
1.2 This test method is applicable to oxygenate(s) in gaso-
1 4
line singularly or in multiple mixtures hereof according to the hols in Gasoline by Gas Chromatography
D5599 Test Method for Determination of Oxygenates in
oxygenates and mass percent ranges given in 1.1.
Gasoline by Gas Chromatography and Oxygen Selective
1.3 The values stated in SI units are to be regarded as
Flame Ionization Detection
standard. No other units of measurement are included in this
D8321 Practice for Development and Validation of Multi-
standard.
variate Analyses for Use in Predicting Properties of
Petroleum Products, Liquid Fuels, and Lubricants based
1.4 This standard does not purport to address all of the
on Spectroscopic Measurements
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
NOTE 1—D5845 was developed with reference to E1655. A significant
priate safety, health, and environmental practices and deter-
enhancement has been made to E1655 and is designated as D8321. D8321
is the preferred standard Practice and describes the mathematics, that is,
mine the applicability of regulatory limitations prior to use.
the regression algorithms to develop calibration equations that are also
1.5 This international standard was developed in accor-
described in E1655. Replace E1655 with D8321.
dance with internationally recognized principles on standard-
NOTE 2—Surrogate methods such as D5845 may indicate that they
make use of the creation of multivariate calibration equations described
ization established in the Decision on Principles for the
therein D8321, but they should not claim to follow the procedures
Development of International Standards, Guides and Recom-
described herein.
mendations issued by the World Trade Organization Technical
3
Barriers to Trade (TBT) Committee. 2.2 Other Standard:
GC/OFID EPATest Method—Oxygen and Oxygenate Con-
tent Analysis (by way of gas chromatography with
oxygen-selective flame ionization detection)
1 2
This test method is under the jurisdiction of ASTM Committee D02 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Subcommittee D02.04.0F on Absorption Spectroscopic Methods. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2021. Published November 2021. Originally the ASTM website.
3
approved in 1995. Last previous edition approved in 2016 as D5845 – 01 (2016). Code of Federal Regulations, Part 80 of Title 40, Section 80.46(g); also
DOI: 10.1520/D5845-21. published in the Federal Register, Volume 59, No. 32, February 16, 1994, p 7828.
*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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D5845 − 21
3.
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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: D5845 − 01 (Reapproved 2016) D5845 − 21
Standard Test Method for
Determination of MTBE, ETBE, TAME, DIPE, Methanol,
Ethanol and tert-Butanol in Gasoline by Infrared
1
Spectroscopy
This standard is issued under the fixed designation D5845; 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 determination of methanol, ethanol, tert-butanol, methyl tert-butyl ether (MTBE), ethyl tert-butyl
ether (ETBE), tert-amyl methyl ether (TAME), and diisopropyl ether (DIPE) in gasoline by infrared spectroscopy. The test method
is suitable for determining methanol from 0.1 to 6 mass %,1.7 % to 5.5 % by mass, ethanol from 0.1 to 11 mass %,1.5 % to 10 %
by mass, tert-butanol from 0.1 to 14 mass %, and DIPE, MTBE, ETBE 1.6 % to 12 % by mass, DIPE from 1.2 % to 17 % by mass,
MTBE from 2.0 % to 16.4 % by mass, ETBE from 2.0 % to 18.5 % by mass, and TAME from 0.1 to 20 mass %.1.5 % to 18.5 %
by mass.
1.2 This test method is applicable to oxygenate(s) in gasoline singularly or in multiple mixtures hereof according to the oxygenates
and mass percent ranges given in 1.1.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 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:
D1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by
Hydrometer Method
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
D4307 Practice for Preparation of Liquid Blends for Use as Analytical Standards
D4815 Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C to C Alcohols in
1 4
Gasoline by Gas Chromatography
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.04.0F on Absorption Spectroscopic Methods.
Current edition approved Oct. 1, 2016Oct. 1, 2021. Published November 2016November 2021. Originally approved in 1995. Last previous edition approved in 20112016
as D5845 – 01 (2011).(2016). DOI: 10.1520/D5845-01R16.10.1520/D5845-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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 ----------------------
D5845 − 21
D5599 Test Method for Determination of Oxygenates in Gasoline by Gas Chromatography and Oxygen Selective Flame
Ionization Detection
E1655D8321 Practices for Infrared Multivariate Quantitative AnalysisPractice for Development and Validation of Multivariate
Analyses for Use in Predicting Properties of Petroleum Products, Liquid Fuels, and Lubricants based on Spectroscopic
Measurements
NOTE 1—D5845 was developed with reference to E1655. A significant enhancement has been made to E1655 and is designated as D8321. D8321 is the
preferred standard Practice and describes the mathematics, that is, the regression algorithms to develop calibration equations that are also described in
E1655. Replace E1655 with D8321.
NOTE 2—Surrogate methods such as D5845 may indicate that they make use of the creation of multivariate calibration equations described therein D8321,
but they should not claim to foll
...