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RS ASTM D4815-22
Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols in Gasoline by Gas Chromatography

Abstract

1.1 This test method covers 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,
n-propanol, isobutanol, tert-butanol, sec-butanol, n-butanol,
and tert-pentanol (tert-amylalcohol).
1.2 Individual ethers are determined from 0.20 % to 20.0 %
by mass. Individual alcohols are determined from 0.20 % to
12.0 % by mass. Equations used to convert to mass percent
oxygen and to volume percent of individual compounds are
provided. At concentrations <0.20 % by mass, it is possible
that hydrocarbons may interfere with several ethers and alcohols. The reporting limit of 0.20 % by mass was tested for
gasolines containing a maximum of 10 % by volume olefins. It
may be possible that for gasolines containing >10 % by volume
olefins, the interference may be >0.20 % by mass. Annex A1
gives a chromatogram showing the interference observed with
a gasoline containing 10 % by volume olefins.
1.3 This test method includes a relative bias correlation for
ethanol in spark-ignition engine fuels for the U.S. EPA
regulations reporting based on Practice D6708 accuracy assessment between Test Method D4815 and Test Method D5599 as
a possible Test Method D4815 alternative to Test Method
D5599. The Practice D6708 derived correlation equation is
only applicable for ethanol in fuels in the concentration range
from 2.28 % to 14.42 % by mass as measured by Test Method
D4815. The applicable Test Method D5599 range for ethanol is
from 2.16 % to 14.39 % by mass as reported by Test Method
D5599.

General Information

Code	Classification	Theme	Pages	Publisher	Availability
RS ASTM D4815-22	ADOPTED ASTM STANDARDS	Chemical technology	14	2023 Version	Available