2-Undecanone Chemical Properties Melting point 11-13 °C(lit.) Boiling point 231-232 °C(lit.) density 0.825 g/mL at 25 °C(lit.) vapor density 5.9 (vs air) vapor pressure <1 mm Hg ( 20 °C) refractive index n20/D 1.43(lit.) FEMA 3093 | 2-UNDECANONE Fp 192 °F storage temp. Store below +30°C. form Liquid color Clear colorless to light yellow