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Table 5 Properties of fatty acid methyl esters as compared to international standard requirements of ASTM

From: ESolvent-free, enzyme-catalyzed biodiesel production from mango, neem, and shea oils via response surface methodology

Property Units FAME value Required by ASTM
Mango Neem Shea  
Kinetic viscosity at 40 °C mm2 s−1 3.25 2.668 ± 0.027 5.404 D 445 (1.9–6.0)
Density at 40 °C kg m−3 0.870 ± 0.000 0.858 ± 0.002 0.865 ± 0.006  
Acid value mgKOH g−1 0.33 ± 0.008 0.18 ± 0.03 0.37 ± 0.002  D 664 (Max. 0.5)
Cetane number   57.83 64.43  64.75  D 613 (47 minimum)
Water content % volume 0.023 ± 0.008 0.044 ± 0.007 0.047 ± 0.005 D 2709 (0.050 %)
Cloud point °C 17–18 15–17 19–20 ASTM D6751 (−3 to 12)
Pour point °C 13 12 13 ASTM D6751 (−15 to 10)