Melting point −31 °C(lit.) Boiling point 207-208 °C(lit.) density 1.05 g/mL at 25 °C(lit.) vapor density 3.45 (vs air) refractive index n20/D 1.432(lit.) FEMA 3103 | GAMMA-VALEROLACTONE Fp 204.8 °F storage temp. Store below +30°C. form Liquid color Clear colorless PH 7 (H2O, 20℃) Water Solubility MISCIBLE