Registration Dossier
Registration Dossier
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EC number: 235-183-8 | CAS number: 12124-97-9
Endpoint summary
Administrative data
Description of key information
Additional information
The test material is a white crystalline odourless solid at room temperature and pressure.
Melting point
The melting point of ammonium bromide is > 370 °C. Samples did not melt up to 370 °C. At this temperature decomposition occurred (speckled black appearance of samples)
Boiling Point
As the substance decomposes before melting a boiling point study is not applicable.
Relative density
The density of ammonium bromide is 2.4550 g/mL.
Vapour pressure
The vapour pressure of ammonium bromide is 1.3E-04 Pa at 25°C.
Log Pow
The substance is an inorganic salt and will not partition to the organic phase.
Water solubility
Water solubility is 783 - 970 g /L at 25°C
Surface tension
Ammonium bromide is not a surface active substance (72.9 mN/m)
Flammability, self-ignition temperature, explosiveness and oxidising properties.
Ammonium bromide is widely used as a flame retardant, it is not therefore flammable nor explosive and is incapable of reacting exothermically with combustible materials.
Dissociation constant
The pKa of ammonium bromide is 9.384 at 25°C.
Particle size determination
Not inhalable. Low fugacity
10% of the substance is within the inhalable fraction (< 100 µm).
The substance has a low propensity to become airborne (AmBr Section 8.5.2 - Acute inhalation Kieran (1998) Key) with a maximum attainable concentration of 0.1 mg/L.
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