Registration Dossier
Registration Dossier
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EC number: 232-164-6 | CAS number: 7789-41-5
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
Read across from NaBr to CaBr2 is possible due to the full dissociation of both compounds in water. Na+ and Ca2+ are not toxic in the concentration ranges where Br- is toxic. Therefore only the Br- is responsible for the toxicity effects.
An activated sludge respiration inhibition study was performed for sodium bromide according to OECD guideline No. 209. A limit test was performed at 1000 mg/L.
The effect of the test material on the respiration of activated sewage sludge micro-organisms gave a 3-hour EC50 of greater than 1000 mg/L. The No Observed Effect Concentration (NOEC) after 3 hours exposure was 1000 mg/L (equivalent to 776 mg/L of bromide).
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