3-Hydroxypyridine Chemical Properties Melting point 125-128 °C(lit.) Boiling point 280-281 °C(lit.) density 1.1418 (rough estimate) refractive index 1.5939 (estimate) Fp 173°C storage temp. Store at RT. solubility 33g/l form Crystalline Powder pka 4.79, 8.75(at 20℃) color Beige to brown