54.7 g/100 cm3 (anhydrous, 0 °C)
148 g/100 cm3 (anhydrous, 18 °C)
81 g/100 cm3 (octahydrate, 20 °C) in water

soluble in ether, alcohol and ammonia

637 °C (anhydrous, decomposes)
41 °C (octahydrate, decomposes)

4.43 g/cm3 (anhydrous solid)
2.353 g/cm3 (hexahydrate solid)
2.098 g/cm3 (octahydrate solid)

odorless

white crystalline solid

R36 38 42 43 61

S22 36/37/39 45 53