Ethyl propionate Chemical Properties Melting point −73 °C(lit.) Boiling point 99 °C(lit.) density 0.888 g/mL at 25 °C(lit.) vapor density 3.52 (vs air) vapor pressure 40 mm Hg ( 27.2 °C) refractive index n20/D 1.384(lit.) FEMA 2456 | ETHYL PROPIONATE Fp 54 °F storage temp. Flammables area solubility 17g/l form Liquid color Clear colorless to pale yellow PH 7 (H2O, 20℃) explosive limit 1.8-11%(V) Water Solubility 25 g/L (15 ºC)