Research Article
Optimization of Sunflower Oil Transesterification Process Using Sodium Methoxide
Table 4
Comparison of the fuel properties of the biodiesel resulted from the optimal condition, with ASTM D 6751 standard.
| Fuel properties | Unit | Value | Standard limits | Standard methods |
| Specific gravity at 15°C | — | 0.87 | 0.86–0.90 | ASTM D 287 | Kinematic viscosity at 40°C | m2/s | | | ASTM D 445 | Flash point |
°C | 150 | ≥100 | ASTM D 93 | Pour point |
°C | 0 | — | ASTM D 97 | Ash content | w/w% | 0.008 | ≤ 0.01 | ASTM D 482 | Cloud point |
°C | 2 | −1 | ASTM D 2500 |
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ASTM; American Standards for Testing of Materials [28–34].
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