Fuel Sample - HOUSTON TX- Petroleum Administration for Defense District (PADD) 3 (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 - HOUSTON, TX - Petroleum Administration for Defense District (PADD) 3
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 537
PADD 3
Sample Ty pe RU
Emissions Ty pe RFG
Season Winter
Date Sampled 2/14/2008 8:55:00 PM
Surv ey Area HOUSTON, TX
RVP, D 5191, psi 11.46
ETOH, Wt, D 5599 (D 4815 f or Calif ornia Samples) 10.73105
EtOH, Vol, D 5599 (D 4815 f or Calif ornia Samples) 9.832177
Corrected Aromatics, D 1319, % 15.6892
Corrected Olef ins, D 1319, % 9.738125
Sulf ur, D 5453, ppm
Sulf ur, D 2622, ppm 31.8
Sulf ur (D5453 or D2622), ppm 31.8
Ev ap_10, D 86, Deg F 115
Ev ap_50, D 86, Deg F 159
Ev ap_90, D 86, Deg F 308
RON, D 2699 91.2
MON, D 2700 83.5
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 0.013 0.018 0.025 i-Butane 4 I 58.124 8.61 75-28-5 0.437 0.564 0.631 isobutene 4 I 58.124 9.36 115-11-7 0.109 0.132 0.158 Butene-1 4 O 56.108 9.4 106-98-9 0.106 0.128 0.158 n-Butane 4 P 58.124 9.72 106-97-8 5.178 6.442 7.482 t-Butene-2 4 O 56.108 10.17 624-64-6 0.189 0.224 0.282 2,2-Dimethy lpropane 4 I 72.151 10.29 463-82-1 0.022 0.027 0.026 c-Butene-2 4 O 56.108 10.85 590-18-1 0.159 0.184 0.238 Ethanol 2 OX 46.07 12.66 64-17-5 10.731 9.832 19.563
Page 2 of 16
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 0.855 0.981 1.023 i-Pentane 5 I 72.151 14.38 78-78-4 5.014 5.827 5.837 Pentene-1 5 O 70.135 15.9 109-67-1 0.155 0.174 0.186
2-Methy lbutene-1 5 I 70.135 16.7 563-46-2 0.359 0.397 0.430 n-Pentane 5 P 72.151 17.2 109-66-0 2.365 2.719 2.753
2-Methy l-1,3-Butadiene 5 O 68.119 17.68 78-79-5 0.004 0.004 0.005 t-Pentene-2 5 O 70.135 18.25 646-04-8 0.716 0.795 0.857
3,3-Dimethy lbutene-1 6 O 84.162 19.11 558-37-2 0.006 0.007 0.006 c-Pentene-2 5 O 70.135 19.23 627-20-3 0.316 0.347...
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