Fuel Sample - LOS ANGELES CA- Petroleum Administration for Defense District (PADD) 5 (01-Sep-2009)
API conducted a program to collect detailed chemical composition data from a broad range of commercial gasoline samples with objective of using this information as “prior arts” to maximize freedom of operations on a broad spectrum of fuel compositions. The data collection and fuel composition analysis was performed for API by Southwest Research Institute (SwRI). SwRI formed a consortium of petroleum companies in the early 1980s to conduct a monthly survey of fuel quality. SwRI collects fuel samples from service stations in 62 U.S. cities, analyzes them and distributes reports to consortium subscribers. About 350 samples are collected each month. For this study, the subscribers gave API permission to (a) select a stratified subset of 590 of the SwRI gasoline survey samples collected in January and July of 2008, (b) augment the dataset with measurements of the concentrations of up to 610 individual chemical compounds in each sample, and (c) publish the results.
Fuel Sample - LOS ANGELES, CA - Petroleum Administration for Defense District (PADD) 5
The f ollowing pages contain inf ormation on the chemical composition and property characteristics of a commercial
gasoline f uel sample collected in a specif ied geographic area denoted by city , state and "PADD" number. PADD is
an acrony m meaning "Petroleum Administration f or Def ense Districts" and is commonly used by agencies such
as the US Energy Inf ormation Administration f or classif y ing petroleum product supply and consumption patterns.
See f igure at right
For additional details on the study that created this report, please consult "Hy drocarbon Composition and Fuel
Properties of Commercial Gasolines" IPCOM000186443
located at http://priorartdatabase.com/IPCOM/000186443 .
Also, f or a summary statistical analy sis of the property v alues f or all of the commercial gasoline f uel samples
reported in the abov e-ref erenced study , please consult the spreadsheet entitled "Hy drocarbon Composition and
Fuel Properties of Commercial Gasolines - Data Summaries" IPCOM000186444D
located at http://priorartdatabase.com/IPCOM/000186444 .
SwRI Sample Identif ication 459
PADD 5
Sample Ty pe RU
Emissions Ty pe CARFG
Season Winter
Date Sampled 2/11/2008 10:35:00 AM
Surv ey Area LOS ANGELES, CA
RVP, D 5191, psi 10.5
ETOH, Wt, D 5599 (D 4815 f or Calif ornia Samples) 6.117599
EtOH, Vol, D 5599 (D 4815 f or Calif ornia Samples) 5.619807
Corrected Aromatics, D 1319, % 18.87604
Corrected Olef ins, D 1319, % 3.303307
Sulf ur, D 5453, ppm 9
Sulf ur, D 2622, ppm
Sulf ur (D5453 or D2622), ppm 9
Ev ap_10, D 86, Deg F 118
Ev ap_50, D 86, Deg F 208
Ev ap_90, D 86, Deg F 296
RON, D 2699 91
MON, D 2700 84.5
Component Carbon # Type M.W . Avg R.T. Cas No wt % Identified vol % Identified mole % Identified
Propane 3 P 44.097 7.37 74-98-6 0.032 0.047 0.065 i-Butane 4 I 58.124 8.61 75-28-5 0.174 0.226 0.267 isobutene 4 I 58.124 9.36 115-11-7 0.008 0.009 0.012 Butene-1 4 O 56.108 9.4 106-98-9 0.009 0.011 0.015 n-Butane 4 P 58.124 9.72 106-97-8 3.373 4.224 5.173 t-Butene-2 4 O 56.108 10.17 624-64-6 0.032 0.038 0.051 2,2-Dimethy lpropane 4 I 72.151 10.29 463-82-1 0.012 0.015 0.015 c-Butene-2 4 O 56.108 10.85 590-18-1 0.033 0.038 0.052 Ethanol 2 OX 46.07 12.66 64-17-5 6.118 5.620 11.837
Page 2 of 17
Component Carbon # Type M.W . Avg R.T. Cas No wt % Identified vol % Identified mole % Identified
3-Methy lbutene-1 5 O 70.135 12.93 563-45-1 0.814 0.942 1.035 i-Pentane 5 I 72.151 14.38 78-78-4 9.668 11.311 11.945 Pentene-1 5 O 70.135 15.9 109-67-1 0.058 0.065 0.073
2-Methy lbutene-1 5 I 70.135 16.7 563-46-2 0.110 0.123 0.140 n-Pentane 5 P 72.151 17.2 109-66-0 2.991 3.463 3.696
2-Methy l-1,3-Butadiene 5 O 68.119 17.68 78-79-5 0.004 0.005 0.005 t-Pentene-2 5 O 70.135 18.25 646-04-8 0.180 0.202 0.229
3,3-Dimethy lbutene-1 6 O 84.162 19.11 558-37-2 0.002 0.003 0.002 c-Pentene-2 5 O 70.135 19.23 627-20-3 0.101 0....
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