Registration Dossier
Registration Dossier
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EC number: 231-830-3 | CAS number: 7758-02-3
Bioaccumulation: aquatic / sediment
Administrative data
Link to relevant study record(s)
Description of key information
Bromide ions would be expected to partition to water rather than soils and sediments in the environment given their high water solubility (ca. 90 g per 100 ml for sodium bromide) and the negative charges on the ions. However, a bioconcentration factor for sodium bromide in aquatic invertebrates has been determined experimentally to be 0.23 (Bartolomé M.C.et al., 2005). In addition, a bioconcentration factor for aquatic organisms has been calculated, giving BCFfish = 1.41 L/kgwet fish (D. Carling, 2007).
Key value for chemical safety assessment
- BCF (aquatic species):
- 0.23 dimensionless
Additional information
Potassium bromide is an inorganic salt that dissociates to its composite ions in aqueous solutions at environmental pH and temperature. Comparison of the available data on the various bromide salts have shown that the bromide ion is the relevant ion for determination of the toxicological profile with simple cations such as potassium, sodium or ammonium, that are ubiquitous in nature, having little or no influence on the bromide ion properties. It is therefore justified to read-across data from other inorganic bromide salts to ammonium bromide.
Bromide ions would be expected to partition to water rather than soils and sediments in the environment given their high water solubility (ca. 90 g per 100 ml for sodium bromide) and the negative charges on the ions. However, a bioconcentration factor for sodium bromide in aquatic invertebrates has been determined experimentally to be 0.23 (Bartolomé M.C.et al., 2005). In addition, a bioconcentration factor for aquatic organisms has been calculated, giving BCFfish = 1.41 L/kgwet fish (D. Carling, 2007).Given this data it is considered that there is minimal risk of bioaccumulation and of secondary poisoning to the aquatic compartment.
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