Melting point :223-227?C
Boiling point :423.94°C (rough estimate)
Density :1.2309 (rough estimate)
refractive index :1.5700 (estimate)
Flash point :2℃
storage temp. :Controlled Substance, -20°C Freezer
solubility :Practically insoluble in water, slightly soluble in ethanol (96 per cent).
pka :pKa 2.90 ± 0.05;10.39±0.04(H2O,t =25,I=0.015(KCl))(Approximate)
Water Solubility :3.93mg/L(25 ºC)
CAS DataBase Reference :146-22-5(CAS DataBase Reference)
NIST Chemistry Reference :Nitrazepam(146-22-5)
EPA Substance Registry System :2H-1,4-Benzodiazepin-2-one, 1,3-dihydro-7-nitro-5-phenyl- (146-22-5)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
Precautionary statements: