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Table 1 Average density and heating values of biodiesel and diesel fuels

From: Algae biodiesel - a feasibility report

Fuel Density (g/cm3) Heating value avg., BTU/gal % difference vs. no. 2 diesel avg.
87 Octane gasoline 0.740 116,090 10.36%
Ethanol (E100) 0.789 84,530 34.53%
No. 2 diesel 0.850 129,500 -
Biodiesel (B100) 0.880 118,296 8.65%
B20 blend 0.856 127,259 1.73%
B2 blend 0.851 129,276 0.17%