Melting point 0.07°C (estimate) alpha -31 º (c=1 in EtOH) Boiling point 107-110 °C23 mm Hg(lit.) density 1.005 g/mL at 25 °C(lit.) vapor density 3.1 (vs air) vapor pressure 0.06 mm Hg ( 20 °C) refractive index 1.44 Fp 250 °F storage temp. 2-8°C optical activity [α]21/D 31.0°, c = 1 in ethanol Water Solubility Fully miscible in water. Sensitive Hygroscopic