Sodium Ethoxide Basic Information CAS: 141-52-6 MF: C2H5NaO MW: 68.05 EINECS: 205-487-5 Mol File: 141-52-6.mol Sodium Ethoxide Structure Sodium Ethoxide Chemical Properties Melting point 260 °C Boiling point 91°C density 0.868 g/mL at 25 °C vapor density 1.6 (vs air) vapor pressure <0.1 mm Hg ( 20 °C) storage temp. Store at R.T. solubility Soluble in ethanol and methanol. form Liquid PH 13 (5g/l, H2O, 20℃) Water Solubility Miscible Stability: Reacts violently with acids, water. Incompatible with chlorinated solvents, moisture. Absorbs carbon dioxide from the air. Highly flammable.