4.519 g/cm³ (monohydrate)

0.09 g/100 mL (0 °C)
0.24 g/100 mL (20 °C)
0.67 g/100 mL (90 °C) in water

soluble in nitric acid
insoluble in alcohol

white solid

non-flammable

decomposes

540 °C (monohydrate)

not listed