Table 2 Comparisons of the relevant fuel properties of the 1,8-cineole (eucalyptol) with ethanol

Research octane number (RON)

99.2^a

109^a

Motor octane number (MON)

91.0^a

90^a

Sensitivity (RON-MON)

8.2

19

Energy density [MJ/L]

33.5^c

20.2^c

Heat of vaporization [kJ/kg]

255^c

919^c

Vapor pressure [kPa @25 °C]

0.25^c

7.833^c

Water solubility [g/L @21 °C]

3.5^c

Fully miscible^c

Oxygen content [% of total mass]

10.4

34.7^c

Anti-knock index AKI = ½(RON + MON)

95.1

99.5^c

Boiling point [°C]

176^c

78.5^c

Freez point/melting point [°C]

1^c

− 114^c

Flash point [°C]

49^c

14^c

OSHA hazards category

2^c

2^c