Research Article
Biodiesel from Citrullus colocynthis Oil: Sulfonic-Ionic Liquid-Catalyzed Esterification of a Two-Step Process
Table 3
Fuel parameters of CCOME as compared to ASTM standards.
| Property | Unit | Test method | CCOME in this work | ASTM D 6751-02 |
| Density, 15°C | kg/m3 | ASTM D4052 | 875.7 | 870–900 | Kinematic viscosity, 40°C | mm2/s | ASTM D445 | 4.486 | 1.9–6.0 | Flash point |
°C | ASTM D93 | 174 | 130 min. | Specific gravity, 15°C | — | ASTM D4052 | 0.889 | 0.88–0.90 | Iodine value | g I2/100 g oil | AOCS Cd1-25 | 111.46 | 120 max | Distillation temperature, 95% |
°C | ASTM D86 | 341 | 360 max. | Cetane number | wt.% | ASTM D613 | 62.4 | 47 min | Water content | wt.% | ASTM D6304 | 0.02 | 0.05 max. | Acid value | mg KOH/gm | ASTM D664 | 0.29 | 0.80 max. | Ester content | wt.% | — | 98.2 | — |
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