Undecenoic acid Chemical Properties Melting point 23-25 °C(lit.) Boiling point 137 °C2 mm Hg(lit.) density 0.912 g/mL at 25 °C(lit.) refractive index n20/D 1.449(lit.) FEMA 3247 | 10-UNDECENOIC ACID Fp 300 °F storage temp. -20°C solubility water: insoluble form Crystalline Low Melting Solid or Liquid