Grade : Pharmaceutical CAS number : 12124-97-9 Hill Formula : H₄BrN Chemical formula : NH₄Br Physicochemical Information Density 2.430 g/cm3 Melting Point 452 °C (closed capillary tube) pH value 5.0 – 6.5 (50 g/l, H₂O, 25 °C) Vapor pressure 1 hPa (197.7 °C) Bulk density 1100 kg/m3 Solubility 970 g/l