Melting point 208-210 °C density 1.2561 (rough estimate) refractive index 1.6740 (estimate) storage temp. 0-6°C solubility Practically insoluble in water, freely soluble in anhydrous formic acid, very slightly soluble in methylene chloride, practically insoluble in ethanol (96 per cent). pka 10.72±0.10(Predicted) form neat Water Solubility 0.75mg/L(209 ºC)