Non-flammable

very soluble in water

soluble in benzene, CCl₄, CS₄

201 °C

77.9 °C (anhydrous)
44.4 °C (hydrate)

colorless crystals
deliquescent

2.47 g/cm³
2.053 g/cm³ at melting point

LW9100000

Not listed

4700 mg/kg (rat, oral)