Na2C2O4 is a white odorless crystal powder at room temperature, density 2.34 g/cm3, melting point 250-270 ̊C (decomposed). It is toxic and soluble in water. Na2C2O4 Example Reactions: • H2C2O4 + NaOH = NaHC2O4 + H2O • NaHC2O4 + NaOH = Na2C2O4 + H2O • 5H2C2O4 + 2KMnO4 + 3H2SO4 = K2SO4 + 2MnSO4 + 10CO2 + 8H2O Na2C2O4 decomposes at 250 ̊C: • Na2C2O4 = Na2CO3 + CO • Na2C2O4 + O2 = 2CO + 2CO2 + 2NaO