1-Nitropropane Chemical Properties Melting point -108 °C Boiling point 132 °C density 0.998 g/mL at 25 °C(lit.) vapor density 3.1 (vs air) vapor pressure 7.5 mm Hg ( 20 °C) refractive index n20/D 1.401(lit.) Fp 93 °F storage temp. Flammables area solubility 14g/l form Liquid