Hydrocarbon Composition of Gasoline 

Vapor Emissions from Enclosed Fuel Tanks

Draft
EPA-420-D-10-001

January 2010

Assessment and Standards Division

Office of Transportation and Air Quality

and

Human Exposure & Atmospheric Sciences Division

Office of Research and Development 

U.S. Environmental Protection Agency

Hydrocarbon Composition of Gasoline 

Vapor Emissions from Enclosed Fuel Tanks

Draft

NOTICE

This technical report does not necessarily represent final EPA decisions or 

positions. It is intended to present technical analysis of issues using data 

that are currently available. The purpose in the release of such reports is to 

facilitate the exchange of technical information and to inform the public of 

technical developments.
 

Introduction 

The purpose of this report is for EPA OTAQ (Office of Transportation and Air Quality) to give 

an initial summary of EPA ORD (Office of Research and Development) work on the 

composition of hydrocarbon emissions from gasoline, specifically the head space components 

above gasoline in an enclosed fuel tank. EPA ORD will formally publish this work in a 

scientific journal but, until that is done, this report will provide details on that work since it is 

related to EPA regulatory packages such as air quality modeling done for the Renewable Fuel 

Standards and Light-Duty Vehicle Greenhouse Gas Standards. 

Overview and Prior Work 

Headspace vapors are those hydrocarbon compounds in gaseous form above a gasoline sample in 

an enclosed space such as a fuel tank, frequently a fuel storage tank used in the distribution for 

gasoline. Some of these vapors are emitted to the atmosphere in transport, storage, and 

utilization of gasoline. The numerous hydrocarbon compounds (about 120 individual 

hydrocarbons) represent the more volatile and lower molecular weight components of the 

gasoline. In recent years and even more so in the future, ethanol, as a renewable fuel component, 

is blended with gasoline generally at the 10% level, which results in 90% gasoline with 10% 

ethanol. This fuel mixture of 90% gasoline and 10% ethanol (in denatured form) will be referred 

to as E10 while 100% gasoline with no ethanol added will be referred to as E0. Also, blends of 

85% ethanol and 15% gasoline (E85) can be used in specially designed flexible-fueled vehicles 

but new headspace profiles with E85 have not yet been obtained in this project for E85. 

There are, thus, the following three fuel blends of interest 

 100% gasoline E0 

 90% gasoline with 10% ethanol E10 

 85% ethanol with 15% gasoline E85 

Originally, two profiles for headspace vapors for E0 and E10 were selected from the SPECIATE 

data base located at 

http://www.epa.gov/ttn/chief/software/speciate/index.html 

These profiles were profile number 8737 and 8736 for E0 and E10 respectively. The profiles 

showed the following aromatic and olefin content for the headspace vapors. 

 Aromatics Olefins 

E0 blend 4% 13% 

E10 blend 2% 4% 

1
Since the use of ethanol, which has high octane properties, in gasoline would replace other high 

octane components such as aromatics, it is reasonable to expect that the aromatic content of the 

headspace would decrease as these profiles show. It is not reasonable to expect that use of E10 

would so markedly decrease olefin content. Gasoline composition varies widely in-use. The 

purpose of the air quality modeling using these profiles is to determine the air quality effects of 

adding ethanol to gasoline in an effort to have the E0 and E10 samples reflect what happens 

when ethanol is added to gasoline rather than using profiles from samples where the widely 

varying composition of in-use gasoline obfuscates the results. 

Initially, the two profiles from SPECIATE mentioned above were adjusted so that the olefin 

content of the E10 blend represented addition of 10% ethanol to the base gasoline (from splashblending). This adjustment was made by decreasing the olefin content of the E0 headspace 

profiles so that the total olefin content would be about 4% and increasing the other components 

including the aromatics to make up for the decreased olefin levels. The resulting profile (named 

8737b) is shown in the attached table. 

In addition to these calculations, measurements were done on an actual splash-blended E10 blend 

obtaining a speciation profile and comparing it to one obtained on the corresponding base 

gasoline. Gasoline/ethanol blends now generally utilize the higher octane of ethanol and, thus, 

as not splash-blended as occurred more in the past. Additional works should and will be done 

with these newer blends compared to a base gasoline. This future work though should be done on 

typical (average) E0 and E10 blends. Still, for this work, a base gasoline was used designed to 

be typical of in-use gasoline. 

The base gasoline being used is that from an EPA in-use test program for emissions 

characterization. The gasoline/ethanol (E10) sample used for headspace analysis was splash 

blended. The base gasoline (E0) was shipped in two canisters from the EPA Office of 

Transportation and Quality facility (OTAQ) in Ann Arbor, MI to the EPA Office of Research 

and Development (ORD) facility in Research Triangle Park, NC. That facility added 10% 

ethanol to a portion of the gasoline to create a 10% ethanol (E10) blend as described below. This 

gasoline has relatively low olefin content (about 4%) but more typical aromatic content (about 

26%). 

Results 

The impact on headspace vapors from the addition of 10% ethanol to the base gasoline in this 

study was to lower the % paraffins and %olefins, and slightly increase the %aromatics. This is 

shown in the spreadsheet where the 86% paraffins, 7.6% olefins, and 5.1% aromatics in the 

headspace@25C for the base gasoline compares to 75.6% paraffins, 6.3% olefins, and 5.6% 

aromatics in the headspace with the added ethanol. Consequently the addition of 10% ethanol to 

the base fuel did decrease the % olefin content from 7.6 to 6.3% of total VOC observed in the 

headspace@25C. Note that these are percentages of the total VOC. This project did not 

measure how the total VOC emissions changed with addition of ethanol but only the 

percent change in the VOC itself. Generally, the addition of ethanol to a base gasoline 

increases the Reid Vapor Pressure of the resultant blend and, thus, the total VOC emissions on a 

mass basis. Also note that isopentane is a major constituent of the headspace vapors accounting 

2
for about 40% of the VOC while it accounts for about 10% of the composition of the base 

gasoline. 

The results showed relatively similar aromatic levels for both E0 and E10 which the earlier 

profiles also showed. The results also showed relatively similar olefin levels for both fuels 

which the earlier profiles did not show. 

These new profiles will be added to SPECIATE (as numbers 8762 and 8763).

Some smog chamber runs have been done with these samples and will be reported separately. 

Appendix 

Sample Preparation 

Both canisters (one for E0 and one for E10) were placed in a fuel shed maintained at 13 degrees 

C for storage. An approximate 1 liter aliquot of E0 was removed from one of the stored cans and 

placed in a stainless steel canister in the storage shed facility. The canister was removed from 

the shed, taken to the laboratory, and placed in a large storage cooler containing ice. After an 

approximate 2 hour cooling period a 225 ml sample of the cooled gas was taken using a 

graduated cylinder, then placed in a 500ml stainless steel can that contained 25 ml of 200 proof 

absolute ethanol. This can was closed, swirled mixed, then placed into the storage cooler that 

contained the 1 liter can of gasoline (E0 designated as sample 41033). Both cans were stored for 

a period of about 90 minutes in the cooler. During this time period, and on 2 other occasions, the 

can containing the 90% gasoline 41033 with 10% ethanol (E10) was swirl mixed for an 

approximate 15 second period. 

Triply distilled water (70 ul) was injected into four recently cleaned and vacuum evacuated six 

liter SUMMA canisters to condition the canister surface. This small volume of water vaporizes 

to water vapor coating the internal surfaces of the canister with a monolayer of water vapor to 

deactivate and condition active surface sites allowing the storage of the hydrocarbons in the 

gasoline and gasoline head space at 25 degrees C. Without this deactivation, significant losses of 

hydrocarbon compounds from benzene to the higher molecular weight hydrocarbons would be 

observed during the sample storage period. 

At the end of this process 25 ml aliquots of the E0 and E10 fuels were placed into 50 ml 

Erlenmeyer flasks then placed into a constant temperature bath containing water and maintained 

at 25o

C. After a 20 minute equilibration time 100 ul aliquots of the headspace vapors were taken 

from each flask and injected into the canisters which were then filled to 40 psig with ultra high 

purity helium. The prepared canisters were allowed to equilibrate for a 12 to 15 hour period 

before performing both GC/FID and GC/MS analyses. Whole fuel samples were prepared by 

injecting 0.02ul aliquots of the cooled liquid into canisters then filled to 40 psig using ultra high 

3
purity helium. More details of these procedures are published elsewhere. Likewise more detailed 

concerning the GC/FID and GC/MS methodology are published elsewhere.1

 

The results obtained for E0 sent to RTP for headspace analysis using GC/FID techniques are 

provided in the attached Excel spreadsheet. In the spreadsheet are the results for both the 

headspace at 25 degrees C and whole fuel analyses of E0 and E10. About 140 compound peaks 

are presented from the more than 200 compound peaks observed representing approximately 

98% of total VOC concentration. The headspace vapors for both E0 and E10 contain 6-7% 

olefins and about 5% aromatics. Compound name, VOC type, and RTINDEX2

 for each 

compound are provided in the first 3 columns to the left. Each sample analysis is identified by 

file name just above the identification of the sample. The column giving the quantitative levels 

(in ppb) is the observed peak concentration given as parts-per-billion-carbon (ppbC). At the 

bottom of the column is the sum of all the listed peaks followed by the sum of all the more than 

200 observed peaks. Below these 2 values is the ratio that the sum of listed peaks is of all the 

observed peaks. This value is typically 98 to 99%. In the rows below these values are the sum 

and % sum of the various compound groups to the total VOC. There are pairs of these columns 

for each of the 4 canister sample results. For those 2 canister samples that contained ethanol, the 

concentration of ethanol was corrected for the reduced FID response due to the presence of the 

oxygen atom using published values. For ethanol, the carbon atom attached to the hydroxyl (OH) 

group has about 50% reduced response with the FID compared to other carbon atoms in the 

compound. Consequently the correction for the 2 carbons in ethanol is given as 2/1.5 or 1.33. 

 The next column highlighted is the % that each of the listed compounds is of total VOC, (the 

sum of the more than 200 observed peaks). 

The next column highlighted is the ratio of the % of total VOC for each compound peak 

observed in the headspace@25C sample to that for the similar compounds observed in the whole 

gasoline analysis. As expected the more volatile compounds contribute a larger % of total VOC 

in the headspace @25C than in the fuel. From the spreadsheet the ratio of 1.6 observed for 

ethanol indicates that this substituted hydrocarbon is less volatile than the hydrocarbon 

compounds, 3-methyl-1-butene and isopentane, eluting just before and after ethanol on the GC 

column. 

Electronic copies of the chromatograms for all 4 samples are available if needed. 

Precision and Accuracy of Results 

 

1

 Harley, R.A., S.A. McKeen, M.O. Rodgers, and W.A. Lonneman, Analysis of motor vehicle 

emissions during the Nashville/Middle Tennessee Ozone Study, J. Geophys. Res., 106, 3559-

3567, 2001 

2

 RTINDEX is a technique used to place the elution order and/or location of various VOCs on the GC column. The 

most common approach is to determine the retention times of a mixture of the C2-C15 normal paraffins (i.e., ethane 

through pentadecane) then place other VOCs by retention time were these compounds elute in reference to the 

normal paraffins. For example the retention time of benzene on an EPA GC column with an RTINDEX value of 

651.21 is about half way between the retention times of n-hexane with a defined RTINDEX value of 600.00 and nheptane with a defined RTINDEX value of 700.00. 

4
Over the years in past analyses of whole gasoline and gasoline headspace@25C samples, 

ORD has measured both precision and accuracy for these analyses. Repeats for instrumental 

precision are the more commonly performed with repeatability of 5% or better. 

A National Institute of Standards and Technology Standard Reference Material 

(NIST/SRM) propane in air standard cylinder is used to determine accuracy. The assumption is 

made (as it is in EPA measurements of motor vehicle exhaust) that all hydrocarbons respond in 

the flame ionization detector (FID) with a uniform per carbon response. However, ethanol, as 

well as any other oxygenated hydrocarbons in gasoline, does not respond in this way. As 

discussed earlier, an adjustment was made for the presence of oxygen in the FID response. In 

the case of ethanol, the presence of oxygen causes this 2 carbon compound to respond as if has 

only 1.5 carbons. Consequently, the observed measurement for ethanol is adjusted using a 2/1.5 

or 1.33 correction factor for this compound. 

Measurements done by 

William Lonneman and Tad Kleindienst 

US Environment Protection Agency 

Office of Research and Development 

National Exposure Research Laboratory 

Research Triangle Park, NC 27711 

5
Gasoline # 41033 Headspace@25C and Whole Gas Analyses

Profile 8762 Profile 8763

Headspace Vapors E0 Headspace Vapors E10

NAME VOC type % of Total VOCRatio HS to Whole Gasoline % of Total VOCRatio HS to Whole Gasoline

ppb ppb

Propylene o 1.420 0.025 5.0 1.200 0.017 3.6

Propane p 3.090 0.054 8.9 2.740 0.038 6.2

Isobutane p 17.310 0.303 15.6 16.830 0.236 11.3

Butene-1 o 3.440 0.060 4.8 3.170 0.044 3.3

Isobutylene o 3.670 0.064 8.3 3.430 0.048 8.7

1,3-Butadiene o 0.580 0.010 2.5 0.340 0.005 1.0

n-Butane p 248.950 4.352 11.1 245.340 3.443 9.8

t-Butene-2 o 11.070 0.194 9.6 10.640 0.149 8.6

2,2-Dimethylpropane p 5.340 0.093 8.7 5.510 0.077 8.3

c-Butene-2 o 10.960 0.192 7.8 10.600 0.149 6.8

3-Methyl-1-Butene o 6.530 0.114 5.6 6.150 0.086 5.4

Ethanol ox 0.000 0.000 0.0 773.130 12.756 1.6

Isopentane p 2564.210 44.829 4.6 2600.840 36.495 4.2

Pentene-1 o 27.510 0.481 4.0 27.640 0.388 3.7

2-Methyl-1-Butene o 55.880 0.977 3.9 56.860 0.798 3.5

n-Pentane p 332.580 5.814 3.4 347.780 4.880 3.2

Isoprene o 1.020 0.018 3.3 0.930 0.013 3.1

trans-2-Pentene o 70.600 1.234 3.3 72.140 1.012 3.0

Unknown u 0.940 0.016 3.9 0.750 0.011 2.4

cis-2-Pentene o 38.470 0.673 3.3 38.880 0.546 3.0

2-Methyl-2-Butene o 103.970 1.818 3.0 104.510 1.466 2.7

2,2-Dimethylbutane p 26.870 0.470 2.2 28.860 0.405 2.1

Cyclopentene o 12.570 0.220 2.4 12.840 0.180 2.2

3-Methyl-1-pentene o 6.020 0.105 1.9 5.700 0.080 1.7

Cyclopentane p 19.610 0.343 2.0 20.620 0.289 1.9

2,3-Dimethylbutane p 264.190 4.619 1.6 285.050 4.000 1.6

2-Methylpentane p 216.080 3.778 1.5 235.960 3.311 1.5

3-Methylpentane p 124.530 2.177 1.3 137.510 1.930 1.3

2-Methyl-1-Pentene + Hexene-1 o 10.660 0.186 1.3 12.000 0.168 1.3

n-Hexane p 61.420 1.074 1.0 69.510 0.975 1.1

trans-3-Hexene o 5.980 0.105 1.1 6.530 0.092 1.1

trans-2-Hexene o 8.200 0.143 1.1 8.990 0.126 1.1

2-Methyl-2-Pentene o 12.760 0.223 1.1 11.130 0.156 1.1

cis-3-Hexene o 6.500 0.114 1.1 6.970 0.098 1.1

4-Methylcyclopentene o 1.500 0.026 1.2 1.480 0.021 1.2

cis-2-Hexene o 4.910 0.086 1.1 5.150 0.072 1.1

cis-3-Methyl-2-pentene o 8.770 0.153 0.9 9.740 0.137 1.0

2,2-DiMethylpentane p 3.410 0.060 0.8 3.850 0.054 0.9

Methylcyclopentane p 56.810 0.993 1.0 63.390 0.889 1.0

2,4-Dimethylpentane p 153.070 2.676 0.7 179.780 2.523 0.8

2,2,3-TriMethylbutane p 5.020 0.088 0.7 6.340 0.089 0.9

2,4-DiMethyl-1-Pentene o 0.390 0.007 0.8 0.400 0.006 0.7

1-Methylcyclopentene o 5.560 0.097 0.8 6.240 0.088 0.9

Benzene a 19.710 0.345 0.9 21.280 0.299 0.9

3,3-DiMethylpentane p 3.190 0.056 0.6 3.600 0.051 0.7

Cyclohexane p 9.350 0.163 0.8 10.650 0.149 0.8

4-Me-1-Hexene o 0.350 0.006 0.6 0.470 0.007 0.5

2-Methylhexane p 30.510 0.533 0.5 38.480 0.540 0.6

2,3-Dimethylpentane p 208.240 3.641 0.5 255.640 3.587 0.6

1,1-DiMeCyclopentane p 1.280 0.022 0.7 1.460 0.020 0.7

3-Methylhexane p 30.730 0.537 0.5 38.420 0.539 0.5

5-Me-2-Hexene o 0.490 0.009 0.8 0.430 0.006 0.7

c-1,3-DiMeCyclopentane p 6.210 0.109 0.5 7.660 0.107 0.6

t-1,3,-DiMeCyclopentane p 8.120 0.142 0.5 10.310 0.145 0.6

2,2,4-TriMethylpentane p 297.780 5.206 0.4 384.850 5.400 0.5

3-Me-3-Hexene o 0.890 0.016 1.0 0.820 0.012 0.8

trans-3-Heptene o 1.230 0.022 0.8 0.900 0.013 0.6

n-Heptane p 16.330 0.285 0.4 21.620 0.303 0.5

trans-3-Heptene o 2.790 0.049 0.5 2.730 0.038 0.4

Unknown u 0.680 0.012 0.5 0.790 0.011 0.6

3-Ethyl-2-Pentene o 0.430 0.008 0.5 0.590 0.008 0.7

3-Methyl-2-Hextene o 0.630 0.011 0.4 0.870 0.012 0.5

2,4,4-TriMethyl-1-Pentene o 0.730 0.013 0.5 1.070 0.015 0.6

cis-2-Heptene o 0.570 0.010 0.4 0.660 0.009 0.5

MethylCyclohexane p 9.220 0.161 0.4 11.830 0.166 0.4

Unknown u 1.090 0.019 0.5 1.360 0.019 0.5

2,5-DiMethylhexane p 24.690 0.432 0.3 34.810 0.488 0.3

2,4-DiMethylhexane + EthylCyclopentane p 34.470 0.603 0.3 47.980 0.673 0.4

3,3-DiMethylhexane + 1,2,4-TriMeCyclopentane p 1.420 0.025 0.3 1.990 0.028 0.4

ctc-1,2,3-TriMeCyclopentane p 0.640 0.011 0.4 0.770 0.011 0.4

6
Gasoline # 41033 Headspace@25C and Whole Gas Analyses (continued)

Profile 8762 Profile 8763

Headspace Vapors E0 Headspace Vapors E10

NAME VOC type % of Total VOCRatio HS to Whole Gasoline % of Total VOCRatio HS to Whole Gasoline

ppb ppb

ctc-1,2,3-TriMeCyclopentane p 0.640 0.011 0.4 0.770 0.011 0.4

2,3,4-TriMethylpentane p 100.690 1.760 0.3 142.440 1.999 0.3

Toluene a 189.470 3.312 0.3 255.930 3.591 0.3

2,3-DiMethylhexane p 19.740 0.345 0.3 28.230 0.396 0.3

2-Methylheptane p 4.200 0.073 0.2 6.000 0.084 0.3

4-MeHeptane p 1.920 0.034 0.2 2.810 0.039 0.3

3,4-DiMethylhexane p 3.740 0.065 0.2 5.310 0.075 0.3

3-Methylheptane p 5.220 0.091 0.2 7.280 0.102 0.3

ctc-1,2,4-TriMeCyclopentane p 1.300 0.023 0.4 1.560 0.022 0.4

t-1,4-DiMeCyclohexane p 0.000 0.0 0.000 0.0

Unknown u 26.500 0.463 0.2 40.450 0.568 0.2

1,1-DiMethylcyclohexane p 0.600 0.010 0.3 0.650 0.009 0.2

Unknown u 0.360 0.006 0.3 0.400 0.006 0.3

2,2,4-TriMethylhexane p 0.530 0.009 0.2 0.950 0.013 0.3

Unknown u 0.000 0.0 0.000 0.0

n-Octane p 2.520 0.044 0.2 3.940 0.055 0.2

cis-2-Octene o 0.590 0.010 0.2 1.320 0.019 0.3

Isopropylcyclopentane p 0.000 0.0 0.000 0.0

2,3,5-TriMethylhexane p 4.650 0.081 0.2 6.910 0.097 0.2

2,4-DiMethylheptane p 1.190 0.021 0.3 1.950 0.027 0.4

2,6-DiMethylheptane p 0.900 0.016 0.2 1.800 0.025 0.4

1c2-DiMethylcyclohexane n-Propylcyclopentane p 0.000 0.0 0.000 0.0

2,5-DiMeHeptane p 1.770 0.031 0.2 2.680 0.038 0.2

Unknown u 0.830 0.015 0.5 0.840 0.012 0.4

1,1,4-TriMeCyclohexane p 0.000 0.0 0.440 0.006 0.6

Ethylbenzene a 8.630 0.151 0.2 12.820 0.180 0.2

ctt-1,2,4-TriMeCyclohexane p 0.960 0.017 0.2 1.370 0.019 0.2

m-& p-Xylene a 27.440 0.480 0.1 40.450 0.568 0.2

3-Methyloctane p 1.180 0.021 0.2 1.610 0.023 0.2

ctc-1,2,4-TriMeCyclohexane p 1.700 0.030 0.1 2.790 0.039 0.1

3,3-DiEthylpentane p 0.450 0.008 0.1 0.810 0.011 0.2

o-Xylene a 5.670 0.099 0.1 8.430 0.118 0.2

Nonene-1 o 1.540 0.027 0.1 2.700 0.038 0.2

1,1,2-TriMeCyclohexane p 1.540 0.027 0.1 2.700 0.038 0.2

Nonane p 0.380 0.007 0.1 0.720 0.010 0.2

trans-2-Nonene o 0.880 0.015 0.1 1.620 0.023 0.1

Isopropylbenzene a 1.280 0.022 0.1 2.180 0.031 0.1

3,5-DiMethyloctane p 0.490 0.009 0.4 0.110 0.002 0.1

2,6-DiMethyloctane p 0.350 0.006 0.1 0.490 0.007 0.1

n-Propylbenzene a 3.140 0.055 0.1 4.210 0.059 0.1

m-Ethyltoluene a 8.750 0.153 0.1 12.220 0.171 0.1

p-Ethyltoluene a 3.990 0.070 0.1 5.480 0.077 0.1

1,3,5-TriMethylbenzene a 4.520 0.079 0.1 5.790 0.081 0.1

3-Methylnonane p 0.120 0.002 0.1 0.170 0.002 0.1

o-Ethyltoluene a 3.180 0.056 0.1 4.280 0.060 0.1

1,2,4-TriMethylbenzene a 10.910 0.191 0.1 15.640 0.219 0.1

n-Decane p 0.340 0.006 0.1 0.720 0.010 0.1

Isobutylbenzene + 1-Me-2-Propylcyclohexane a 0.210 0.004 0.1 0.450 0.006 0.1

sec-Butylbenzene a 0.270 0.005 0.1 0.430 0.006 0.1

m-Cymene a 0.320 0.006 0.1 0.410 0.006 0.1

1,2,3-TriMethylbenzene a 2.090 0.037 0.1 2.650 0.037 0.1

Indane n 0.650 0.011 0.1 0.790 0.011 0.1

m-Diethylbenzene a 0.000 0.000 

1,Me-3-n-Propylbenzene a 0.640 0.011 0.0 0.960 0.013 0.0

n-Butylbenzene a 0.850 0.015 0.1 1.520 0.021 0.1

1-Me-2-n-Propylbenzene a 0.750 0.013 0.1 0.950 0.013 0.1

1,4-DiMe-2-Ethylbenzene a 0.680 0.012 0.1 0.420 0.006 0.0

Unknown u 0.000 0.0 0.490 0.007 0.1

1,2-DiMe-4-Ethylbenzene a 0.680 0.012 0.1 0.990 0.014 0.1

1,3-DiMe-2-Ethylbenzene a 0.000 0.0 0.000 0.0

n-Undecane p 0.520 0.009 0.4 0.330 0.005 0.1

1,2-DiMe-3-Ethylbenzene a 0.000 0.0 0.000 0.0

1,2,4,5-Tetra-Me-Benzene a 0.400 0.007 0.1 0.280 0.004 0.0

Unknown u 0.790 0.014 0.1 0.510 0.007 0.0

Unknown u 0.000 0.0 0.210 0.003 0.0

Methylindane n 0.350 0.006 0.2 0.000 0.0

n-Pentylbenzene + t-1-Me-2-(4MP)cyclohexane a 0.000 0.0 0.000 0.0

Unknown u 0.000 0.0 0.000 0.0

t-1-But-3,5-DiMeBenzene a 0.000 0.000 

Naphthalene n 0.000 0.000 0.0 0.180 0.003 0.0

n-Dodecane p 0.310 0.005 0.3 0.000 0.0

7
Summary Statistics on Headspace Profiles

GasE0 HS@25C GasE10 HS@2

NAME

Sum of GC Peaks 5,698 7,000

Sum of ALL GC Peaks 5,720 7,032

%Sum of Peaks are of Total HC 99.610 99.545

Sum of Parafins 4,936.64 5,339.24

% of Total 86.303 75.925

Sum of Aromatics 293.58 397.77

% of Total 5.132 5.656

Sum of Olefins 435.40 443.35

% of Total 7.612 6.304

% Ethanol is of Total HC 0.000 10.994

% Ethanol adjusted for FID Response is of Total HC 12.757

Sum of Unknowns 31.19 45.80

% of Total 0.545 0.651

Sum of Fused Rings 1.00 0.97

% of Total 0.017 0.014

8
Gasoline # 41033 Headspace@25C and Whole Gas Analyses

Whole Gasoline Analysis

E0 Gasoline E10 Gasoline

NAME VOC type % of Total VOC % of Total VOC

ppb ppb

Propylene o 0.550 0.005 0.490 0.005

Propane p 0.680 0.006 0.640 0.006

Isobutane p 2.170 0.019 2.160 0.021

Butene-1 o 1.396 0.012 1.380 0.013

Isobutylene o 0.870 0.008 0.575 0.006

1,3-Butadiene o 0.450 0.004 0.490 0.005

n-Butane p 43.790 0.391 36.360 0.351

t-Butene-2 o 2.248 0.020 1.800 0.017

2,2-Dimethylpropane p 1.202 0.011 0.970 0.009

c-Butene-2 o 2.760 0.025 2.270 0.022

3-Methyl-1-Butene o 2.300 0.021 1.650 0.016

Ethanol ox 0.000 0.000 601.970 7.731

Isopentane p 1085.710 9.704 903.320 8.723

Pentene-1 o 13.330 0.119 10.770 0.104

2-Methyl-1-Butene o 28.050 0.251 23.520 0.227

n-Pentane p 192.770 1.723 160.060 1.546

Isoprene o 0.600 0.005 0.430 0.004

trans-2-Pentene o 42.090 0.376 35.140 0.339

Unknown u 0.470 0.004 0.460 0.004

cis-2-Pentene o 23.140 0.207 19.120 0.185

2-Methyl-2-Butene o 68.840 0.615 56.350 0.544

2,2-Dimethylbutane p 24.150 0.216 19.820 0.191

Cyclopentene o 10.240 0.092 8.360 0.081

3-Methyl-1-pentene o 6.350 0.057 4.890 0.047

Cyclopentane p 19.010 0.170 15.520 0.150

2,3-Dimethylbutane p 322.610 2.884 258.910 2.500

2-Methylpentane p 290.040 2.592 232.290 2.243

3-Methylpentane p 188.070 1.681 150.340 1.452

2-Methyl-1-Pentene + Hexene-1 o 16.370 0.146 13.650 0.132

n-Hexane p 115.050 1.028 91.870 0.887

trans-3-Hexene o 10.440 0.093 8.310 0.080

trans-2-Hexene o 15.100 0.135 12.000 0.116

2-Methyl-2-Pentene o 23.100 0.206 14.750 0.142

cis-3-Hexene o 11.860 0.106 9.430 0.091

4-Methylcyclopentene o 2.440 0.022 1.870 0.018

cis-2-Hexene o 8.810 0.079 6.820 0.066

cis-3-Methyl-2-pentene o 18.110 0.162 14.140 0.137

2,2-DiMethylpentane p 8.580 0.077 6.470 0.062

Methylcyclopentane p 114.310 1.022 90.990 0.879

2,4-Dimethylpentane p 416.280 3.721 328.280 3.170

2,2,3-TriMethylbutane p 13.600 0.122 10.100 0.098

2,4-DiMethyl-1-Pentene o 0.900 0.008 0.780 0.008

1-Methylcyclopentene o 14.230 0.127 10.460 0.101

Benzene a 43.490 0.389 36.140 0.349

3,3-DiMethylpentane p 9.730 0.087 7.950 0.077

Cyclohexane p 23.880 0.213 19.510 0.188

4-Me-1-Hexene o 1.240 0.011 1.430 0.014

2-Methylhexane p 121.640 1.087 97.660 0.943

2,3-Dimethylpentane p 781.810 6.988 622.010 6.006

1,1-DiMeCyclopentane p 3.800 0.034 3.030 0.029

3-Methylhexane p 127.490 1.140 102.130 0.986

5-Me-2-Hexene o 1.270 0.011 0.950 0.009

c-1,3-DiMeCyclopentane p 24.060 0.215 19.220 0.186

t-1,3,-DiMeCyclopentane p 33.910 0.303 27.110 0.262

2,2,4-TriMethylpentane p 1454.670 13.002 1163.680 11.237

3-Me-3-Hexene o 1.790 0.016 1.450 0.014

trans-3-Heptene o 2.890 0.026 2.330 0.022

n-Heptane p 83.300 0.745 68.520 0.662

trans-3-Heptene o 11.360 0.102 8.960 0.087

Unknown u 2.440 0.022 2.010 0.019

3-Ethyl-2-Pentene o 1.560 0.014 1.220 0.012

3-Methyl-2-Hextene o 3.090 0.028 2.560 0.025

2,4,4-TriMethyl-1-Pentene o 3.140 0.028 2.720 0.026

cis-2-Heptene o 2.500 0.022 1.942 0.019

MethylCyclohexane p 47.670 0.426 38.930 0.376

Unknown u 4.420 0.040 3.620 0.035

2,5-DiMethylhexane p 177.140 1.583 146.080 1.411

2,4-DiMethylhexane + EthylCyclopentane p 238.440 2.131 194.880 1.882

3,3-DiMethylhexane + 1,2,4-TriMeCyclopentane p 9.740 0.087 7.990 0.077

ctc-1,2,3-TriMeCyclopentane p 3.490 0.031 2.840 0.027

9
Gasoline # 41033 Headspace@25C and Whole Gas Analyses (continued)

Whole Gasoline Analysis

E0 Gasoline E10 Gasoline

NAME VOC type % of Total VOC % of Total VOC

ppb ppb

2,3,4-TriMethylpentane p 775.810 6.934 639.310 6.173

Toluene a 1339.630 11.974 1109.480 10.713

2,3-DiMethylhexane p 153.750 1.374 133.550 1.290

2-Methylheptane p 36.440 0.326 30.590 0.295

4-MeHeptane p 15.540 0.139 13.350 0.129

3,4-DiMethylhexane p 31.520 0.282 26.630 0.257

3-Methylheptane p 46.520 0.416 39.710 0.383

ctc-1,2,4-TriMeCyclopentane p 6.940 0.062 6.150 0.059

t-1,4-DiMeCyclohexane p 1.700 0.015 1.640 0.016

Unknown u 282.200 2.522 237.980 2.298

1,1-DiMethylcyclohexane p 4.290 0.038 3.940 0.038

Unknown u 2.630 0.024 2.290 0.022

2,2,4-TriMethylhexane p 6.200 0.055 5.300 0.051

Unknown u 0.990 0.009 0.910 0.009

n-Octane p 29.350 0.262 24.980 0.241

cis-2-Octene o 6.710 0.060 5.740 0.055

Isopropylcyclopentane p 1.040 0.009 0.900 0.009

2,3,5-TriMethylhexane p 50.700 0.453 44.620 0.431

2,4-DiMethylheptane p 7.980 0.071 6.930 0.067

2,6-DiMethylheptane p 7.970 0.071 6.930 0.067

1c2-DiMethylcyclohexane n-Propylcyclopentane p 2.090 0.019 1.820 0.018

2,5-DiMeHeptane p 21.030 0.188 18.550 0.179

Unknown u 3.310 0.030 2.780 0.027

1,1,4-TriMeCyclohexane p 1.270 0.011 1.110 0.011

Ethylbenzene a 106.170 0.949 95.190 0.919

ctt-1,2,4-TriMeCyclohexane p 11.070 0.099 10.030 0.097

m-& p-Xylene a 368.860 3.297 335.120 3.236

3-Methyloctane p 11.280 0.101 10.340 0.100

ctc-1,2,4-TriMeCyclohexane p 29.860 0.267 27.520 0.266

3,3-DiEthylpentane p 6.450 0.058 6.140 0.059

o-Xylene a 85.590 0.765 79.320 0.766

Nonene-1 o 26.390 0.236 23.810 0.230

1,1,2-TriMeCyclohexane p 26.390 0.236 23.810 0.230

Nonane p 7.090 0.063 6.900 0.067

trans-2-Nonene o 17.540 0.157 16.400 0.158

Isopropylbenzene a 24.030 0.215 23.670 0.229

3,5-DiMethyloctane p 2.150 0.019 2.500 0.024

2,6-DiMethyloctane p 6.550 0.059 6.450 0.062

n-Propylbenzene a 61.570 0.550 64.280 0.621

m-Ethyltoluene a 203.520 1.819 214.260 2.069

p-Ethyltoluene a 87.280 0.780 93.290 0.901

1,3,5-TriMethylbenzene a 111.050 0.993 119.840 1.157

3-Methylnonane p 1.900 0.017 2.550 0.025

o-Ethyltoluene a 73.670 0.658 79.500 0.768

1,2,4-TriMethylbenzene a 285.760 2.554 321.300 3.103

n-Decane p 10.610 0.095 11.860 0.115

Isobutylbenzene + 1-Me-2-Propylcyclohexane a 5.960 0.053 6.870 0.066

sec-Butylbenzene a 5.280 0.047 5.990 0.058

m-Cymene a 7.010 0.063 8.510 0.082

1,2,3-TriMethylbenzene a 51.460 0.460 61.020 0.589

Indane n 14.230 0.127 16.620 0.160

m-Diethylbenzene a 0.000 0.000

1,Me-3-n-Propylbenzene a 44.380 0.397 57.420 0.554

n-Butylbenzene a 31.470 0.281 42.860 0.414

1-Me-2-n-Propylbenzene a 18.940 0.169 24.990 0.241

1,4-DiMe-2-Ethylbenzene a 9.310 0.083 13.290 0.128

Unknown u 8.680 0.078 12.220 0.118

1,2-DiMe-4-Ethylbenzene a 15.070 0.135 22.170 0.214

1,3-DiMe-2-Ethylbenzene a 1.190 0.011 1.910 0.018

n-Undecane p 2.300 0.021 4.290 0.041

1,2-DiMe-3-Ethylbenzene a 4.320 0.039 6.220 0.060

1,2,4,5-Tetra-Me-Benzene a 7.150 0.064 11.130 0.107

Unknown u 10.320 0.092 15.920 0.154

Unknown u 3.870 0.035 6.550 0.063

Methylindane n 2.960 0.026 4.600 0.044

n-Pentylbenzene + t-1-Me-2-(4MP)cyclohexane a 2.610 0.023 4.350 0.042

Unknown u 1.750 0.016 2.920 0.028

t-1-But-3,5-DiMeBenzene a 0.000 0.000

Naphthalene n 4.500 0.040 9.120 0.088

n-Dodecane p 2.220 0.020 3.890 0.038

10
Summary Statistics on Whole Gasoline Profiles

GasE0 Whole GasE10 Whole

NAME

Sum of GC Peaks 11,038 10,039

Sum of ALL GC Peaks 11,189 10,221

%Sum of Peaks are of Total HC 98.654 98.221

Sum of Parafins 7,295.60 5,950.96

% of Total 65.203 58.224

Sum of Aromatics 2,994.77 2,838.12

% of Total 26.765 27.768

Sum of Olefins 405.26 329.93

% of Total 3.622 3.228

% Ethanol is of Total HC 0.000 5.890

% Ethanol adjusted for FID Response is of Total HC 7.264

Sum of Unknowns 321.08 287.66

% of Total 2.870 2.814

Sum of Fused Rings 21.69 30.34

% of Total 0.194 0.297

11
Calculated Profile for E0 Gasoline Headspace Based on E10 Profile

Compound Profile 8737B Compound (CONTINUED) Profile 8737B

1-METHYLPROPYLBENZENE 0.012% 2,5-DIMETHYLHEXANE 0.227%

2-METHYLPROPYLBENZENE 0.009% 2,6-DIMETHYLHEPTANE 0.028%

1,1,2-TRIMETHYLCYCLOPENTANE 0.000% 2,6-DIMETHYLOCTANE 0.053%

1,1,3-TRIMETHYLCYCLOPENTANE 0.000% 2-BUTYNE 0.000%

1,1-DIMETHYLCYCLOHEXANE 0.002% 2-ETHYL-1-BUTENE 0.000%

1,1-DIMETHYLCYCLOPENTANE 0.002% 2-METHYL-1-BUTENE 0.478%

1,2,3,4-TETRAMETHYLBENZENE 0.000% 2-METHYL-1-PENTENE 0.090%

1,2,3,5-TETRAMETHYLBENZENE 0.000% 2-METHYL-2-BUTENE 0.833%

1,2,3-TRIMETHYLBENZENE 0.066% 2-METHYL-2-HEXENE 0.000%

1,2,3-TRIMETHYLCYCLOPENTANE 0.000% 2-METHYL-2-PENTENE 0.117%

1,2,4,5-TETRAMETHYLBENZENE 0.012% 2-METHYL-2-PROPENAL 0.000%

1,2,4-TRIMETHYLBENZENE 0.267% 2-METHYL-3-ETHYLPENTANE 0.001%

1,2,4-TRIMETHYLCYCLOPENTANE 0.019% TRANS-2-METHYL-3-HEXENE 0.000%

1,2-DIETHYLBENZENE 0.000% 2-METHYLHEPTANE 0.174%

1,2-DIMETHYL-3-ETHYLBENZENE 0.008% 2-METHYLHEXANE 0.807%

1,2-DIMETHYL-4-ETHYLBENZENE 0.039% 2-METHYLOCTANE 0.043%

PROPADIENE 0.000% 2-METHYLPENTANE 4.607%

1,3,5-TRIMETHYLBENZENE 0.091% 3,3-DIMETHYL-1-BUTENE 0.000%

1,3-BUTADIENE 0.001% 3,3-DIMETHYLHEPTANE 0.000%

CYCLOPENTADIENE 0.000% 3,3-DIMETHYLHEXANE 0.055%

1,3-DIETHYLBENZENE 0.017% 3,3-DIMETHYLPENTANE 0.079%

1,3-DIMETHYL-2-ETHYLBENZENE 0.000% 3,4-DIMETHYLHEPTANE 0.000%

1,3-DIMETHYL-4-ETHYLBENZENE 0.000% 3,4-DIMETHYLHEXANE 0.045%

1,3-DIMETHYL-5-ETHYLBENZENE 0.000% 3,5-DIMETHYLHEPTANE 0.000%

1,4-DIETHYLBENZENE 0.057% 3,5-DIMETHYLOCTANE 0.003%

1,4-DIMETHYL-2-ETHYLBENZENE 0.025% 3,6-DIMETHYLOCTANE 0.003%

1-BUTENE 0.082% 3-ETHYL-2-PENTENE 0.000%

1-BUTYNE 0.000% 3-ETHYLHEXANE 0.000%

1-ETHYL-TERT-BUTYLETHER 0.000% 3-ETHYLPENTANE 0.235%

1-HEPTENE 0.000% 3-METHYL-1-BUTENE 0.114%

1-HEXENE 0.043% 3-METHYL-1-HEXENE 0.000%

1-METHYL-2-ETHYLBENZENE 0.070% 3-METHYL-1-PENTENE 0.058%

1-METHYL-2-ISOPROPYLBENZENE 0.000% CIS-3-METHYL-2-HEXENE 0.000%

1-METHYL-2-N-BUTYLBENZENE 0.001% 3-METHYL-CIS-2-PENTENE 0.000%

1-METHYL-2-N-PROPYLBENZENE 0.025% CIS-3-METHYL-3-HEXENE 0.000%

1-METHYL-2-TERT-BUTYLBENZENE 0.000% 3-METHYL-TRANS-2-PENTENE 0.000%

1-METHYL-3-ETHYLBENZENE 0.189% 3-METHYL-TRANS-3-HEXENE 0.000%

1-METHYL-3-ISOPROPYLBENZENE 0.018% 3-METHYLCYCLOPENTENE 0.002%

1-METHYL-3-N-PROPYLBENZENE 0.037% 3-METHYLHEPTANE 0.194%

1-METHYL-4-ETHYLBENZENE 0.073% 3-METHYLHEXANE 0.794%

1-METHYL-4-ISOPROPYLBENZENE 0.010% 3-METHYLNONANE 0.017%

1-METHYL-4-NPROPYLBENZENE 0.000% 3-METHYLOCTANE 0.052%

1-METHYLCYCLOPENTENE 0.045% 3-METHYLPENTANE 2.510%

1-NONENE 0.000% 4,4-DIMETHYL-2-PENTENE 0.000%

1-OCTENE 0.000% 4,4-DIMETHYLHEPTANE 0.004%

1-PENTENE 0.270% 4-METHYL-1-HEXENE 0.007%

1-PROPYNE 0.000% 4-METHYL-1-PENTENE 0.000%

2,2,3-TRIMETHYLBUTANE 0.039% 4-METHYL-CIS-2-PENTENE 0.000%

2,2,3-TRIMETHYLPENTANE 0.000% 4-METHYL-TRANS-2-PENTENE 0.000%

2,2,4-TRIMETHYLHEXANE 0.036% 4-METHYLHEPTANE 0.083%

2,2,4-TRIMETHYLPENTANE 2.542% 4-METHYLOCTANE 0.000%

2,2,5-TRIMETHYLHEXANE 0.000% TRANS-5-METHYL-2-HEXENE 0.000%

2,2-DIMETHYLBUTANE 1.383% ACETALDEHYDE 0.000%

2,2-DIMETHYLHEXANE 0.000% ACETONE 0.000%

2,2-DIMETHYLOCTANE 0.000% ACETYLENE 0.000%

2,2-DIMETHYLPENTANE 0.072% ACROLEIN 0.000%

2,2-DIMETHYLPROPANE 0.025% BENZALDEHYDE 0.000%

2,3,3-TRIMETHYLPENTANE 0.000% BENZENE 1.202%

2,3,4-TRIMETHYLPENTANE 0.723% N-BUTYRALDEHYDE 0.000%

2,3,5-TRIMETHYLHEXANE 0.034% C10H20 0.000%

2,3-DIMETHYL-2-BUTENE 0.000% C11H16 0.000%

2,3-DIMETHYLBUTANE 1.667% UNIDENTIFIED C9-C12+ 0.000%

2,3-DIMETHYLHEPTANE 0.000% CIS,TRANS-1,2,4-TRIMETHYLCYCL 0.001%

2,3-DIMETHYLHEXANE 0.203% CIS-1,2-DIMETHYLCYCLOHEXANE 0.025%

2,3-DIMETHYLPENTANE 0.597% Cis-1,3-DIMETHYLCYCLOHEXANE 0.000%

2,4,4-TRIMETHYL-1-PENTENE 0.014% CIS-1,3-DIMETHYLCYCLOPENTANE 0.174%

2,4,4-TRIMETHYL-2-PENTENE 0.000% 1-CIS,2-TRANS,3-TRIMETHYLCYCL 0.005%

2,4-DIMETHYL-1-PENTENE 0.005% CIS-1,TRANS-2,4-TRIMETHYLCYCL 0.008%

2,4-DIMETHYLHEPTANE 0.032% CIS-1,TRANS-2,TRANS-4-TRIMETH 0.003%

2,4-DIMETHYLHEXANE 0.413% 1-CIS-2-DIMETHYLCYCLOPENTAN 0.000%

2,4-DIMETHYLOCTANE 0.000% CIS-1-ETHYL-3-METHYLCYCLOPEN 0.000%

2,4-DIMETHYLPENTANE 0.650% CIS-2-BUTENE 0.208%

2,5-DIMETHYLHEPTANE 0.063% Cis-2-HEPTENE 0.009%

12
Compound Profile 8737B Compound Profile 8737B

Cis-2-OCTENE 0.002% TRANS-4-OCTENE 0.000%

CIS-2-PENTENE 0.327% HEXALDEHYDE 0.000%

CIS-3-HEXENE 0.055% VALERALDEHYDE 0.000%

CROTONALDEHYDE 0.000% P-METHYLSTYRENE 0.000%

CYCLOHEXANE 0.228% NONANAL 0.000%

CYCLOHEXENE 0.000% OCTANAL 0.000%

CYCLOPENTANE 0.577% 1-UNDECENE 0.004%

CYCLOPENTENE 0.119% 1-BUTENE+ ISOBUTENE 0.000%

ETHANE 0.056% 1,3-HEXADIENE (TRANS) 0.000%

ETHANOL 0.124% 3-METHYL-2-PENTENE 0.097%

ETHYLBENZENE 0.273% PROPYLTOLUENE 0.000%

ETHYLCYCLOHEXANE 0.000% O-TOLUALDEHYDE 0.000%

ETHYLCYCLOPENTANE 0.000% ISOPROPYLCYCLOPENTANE 0.000%

ETHYLENE 0.000% C11H14 0.000%

FORMALDEHYDE 0.000% 3-ETHYLPENTENE 0.050%

INDAN 0.037% DANITOL 0.049%

ISOBUTANE 5.357% 2-BUTENE 0.192%

2-METHYLPROPENE (ISOBUTYLENE) 0.090% METHYLINDANE 0.031%

M-& P-XYLENE 0.997% CIS-2-NONENE 0.000%

2-METHYLBUTANE (ISOPENTANE) 27.821% T-1-BUTYL-2-METHYLBENZENE 0.000%

ISOPRENE 0.022% 2,5-DIMETHYLBENZALDEHYDE 0.000%

2-PROPANOL 0.000% P-DIETHYLBENZENE &N-BUTYLBE 0.003%

ISOPROPYLBENZENE (CUMENE) 0.046% 4-METHYLCYCLOPENTENE 0.004%

ISOPROPYLCYCLOHEXANE 0.000% C10H12 0.000%

ISOVALERALDEHYDE 0.000% C11H24 0.000%

METHANE 0.000% C12H26 0.000%

METHANOL 0.000% 2-OCTENE 0.000%

MEK 0.000% C-3-HEXENE 0.000%

O-METHYLSTYRENE 0.000% UNIDENTIFIED C6 0.000%

MTBE 0.000% C6H8 0.000%

METHYLCYCLOHEXANE 0.298% UNIDENTIFIED C7 0.000%

METHYLCYCLOPENTANE 1.150% C7H14 0.000%

N-BUTANE 22.649% C8H14 0.000%

N-BUTYLBENZENE 0.000% C9H18 0.000%

N-BUTYLCYCLOPENTANE 0.000% 1,5-DIMETHYLCYCLOPENTENE 0.000%

N-DECANE 0.063% ETHYLCYCLOPENTENE 0.000%

N-DODECANE 0.023% ISOBUTYRALDEHYDE 0.000%

N-HEPTANE 0.494% CAMPHENE 0.000%

N-HEXANE 1.684% METHYLBENZALDEHYDE 0.000%

N-NONANE 0.073% METHYLCYCLOHEXENE 0.000%

N-OCTANE 0.153% PENTADIENE 0.000%

N-PENTANE 7.187% PIPERYLENE 0.000%

N-PENTYLBENZENE 0.000% 1-TERT-BUTYL-3,5-DIMETHYLBENZ 0.001%

N-PROPYLBENZENE 0.067% UNKNOWN 0.000%

N-TRIDECANE 0.000%

N-UNDECANE 0.040%

NAPHTHALENE 0.027%

O-XYLENE 0.312%

C10H22 0.000%

C7H12 0.000%

C8H16 0.000%

PROPANE 0.342%

PROPIONALDEHYDE 0.000%

PROPYLCYCLOHEXANE 0.004%

N-PROPYLCYCLOPENTANE 0.001%

PROPYLENE 0.013%

STYRENE 0.000%

TOLUALDEHYDE 0.000%

TOLUENE 2.918%

TRANS-1,2-DIMETHYLCYCLOHEXANE 0.000%

TRANS-1,2-DIMETHYLCYCLOPENTANE 0.000%

TRANS-1,3-DIMETHYLCYCLOHEXANE 0.000%

TRANS-1,3-DIMETHYLCYCLOPENTANE 0.016%

TRANS-1,3-PENTADIENE 0.000%

TRANS-1,4-DIMETHYLCYCLOHEXANE 0.003%

TRANS-1-ETHYL-3-METHYLCYCLOPENTANE 0.000%

TRANS-2-BUTENE 0.043%

TRANS-2-HEPTENE 0.000%

TRANS-2-HEXENE 0.099%

TRANS-2-OCTENE 0.003%

TRANS-2-PENTENE 0.641%

TRANS-3-HEPTENE 0.013%

TRANS-3-HEXENE 0.081%

TRANS-3-NONENE 0.000%

13