Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

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.