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Ammonium bromide NH4Br CAS 12124-97-9
Ammonium bromide Chemical Properties
Melting point : 452 °C (lit.)
Boiling point : 396 °C/1 atm (lit.)
density : 2.43 g/mL at 25 °C (lit.)
vapor pressure :1 mm Hg ( 198.3 °C)
Storage temp.: Inert atmosphere,Room Temperature
Solubility H2O: 1 M at 20 °C, clear, colorless
Form :Powder/Solid
Specific Gravity:2.429
Color :White
Odor:Odorless
PH:5.0-6.0 (25℃, 50mg/mL in H2O)
Ammonium bromide Specification:
Items Photo Photo Medical
First Grade Second Grade Grade
Main content 99.5% min 99.5% min 99.0% min
Loss on drying 0.5% max 0.5% max 0.5% max
Water Insoluable 0.005% max 0.01% max —
Chloride 0.2% max 0.2% max 0.5% max
Iodide 0.001%max — —
Sulphate 0.005%max 0.005% max 0.01% max
PH Value(5%) 4.5—6.0 4.5—6.0 4.5—6.0
As — — ≤0.0004%
Pb 0.2ppm max 5ppm max 5ppm max
Fe 0.5ppm max 1ppm max —
Cu 0.5ppm max 1.0ppm max —
Bi 0.2ppm max 0.5ppm max —
Peroxide solution
penetrability 93~100 85~100 —
(250g/l) (410nm) (410nm)
Transparency Qualified Qualified —
test
Peroxide solution
chromaticity (15.0 Black once) — —
(250g/l) max