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Environmental fate & pathways

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The chemical nature of the bromide ion is such that it cannot biodegrade. The bromide ion is also stable to photolysis and abiotic degradation. This is demonstrated by the presence of significant quantities in certain environmental systems, e.g. sea water and some soils. The high water solubility and negative charge of the ion suggest that this species will partition predominantly to the aqueous phase. The very low vapour pressure measured for sodium bromide indicates that the volatilisation of the ion into the atmosphere in quantities of concern will not occur.

The very high water solubility of sodium bromide suggests that the log Pow is very low. This, together with the measured low BCF of 0.23 indicates that it is unlikely that sodium bromide will accumulate in biological membranes.