Properties Molecular formula CHNaO3 Molar mass 84.01 g mol1 Appearance white crystalline solid Odor odorless Density 2.173 g/cm3 Melting point decomp: 323.15 K (50 °C) - 543.15 K (270 °C) Solubility in water 7.8 g/100 mL (18 °C) 10 g/100 mL (20 °C) Solubility insoluble in alcohol, ether Acidity (pKa) 10.3 Refractive index (nD) 1.3344