pKa
|
11.0
|
Apperance
|
White crystalline solid deliquescent
|
Boiling Point
|
1625°C
|
Std enthalpy of formation
|
−131.5 kJ/mol
|
Density
|
1.52 g/cm3
|
Flash Point
|
Non-flammable
|
Melting Point
|
634.5°C
|
Std molar entropy
|
127.8 J K−1 mol−1
|
Odor
|
faint, almond-like
|
Refractive Index
|
1.410
|
Solubility
|
71.6 g/100 ml (25 °C) 100 g/100 mL (100 °C) in water
|
Solubility
|
4.91 g/100 mL (20 °C) in methanol
|
Solubility
|
soluble in glycerol
|
Solubility
|
14.6 g/100 mL in formamide
|
Solubility
|
0.57 g/100mL in ethanol
|
Solubility
|
41 g/100 mL in hydroxylamine
|
EU Index
|
006-007-00-5
|
European Hazard Symbols
|
Very toxic (T+)
|
European Hazard Symbols
|
Dangerous for the environment (N)
|
LD50
|
5–10 mg/kg (oral in rats, mice, rabbits)
|
NFPA704
|
|
Risk Statements
|
R26/27/28, R32, R50/53
|
RTECS
|
TS8750000
|
Safety Statements
|
S1/2, S7, S28, S29, S45, S60, S61
|
UN Number
|
1680
|