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EC number: 236-337-7
CAS number: 13308-51-5
There is no significant inhibition of bacterial respiration by Boron
orthophosphate up to and including a concentration of 1000 mg/L.
Inhibition (%) of the respiration rate by the test item
Test item concentration [mg T/L]
The influence of Boron orthophosphate (CAS 13308-51-5) on the
respiration of activated sewage sludge was investigated in a static OECD
209 test under GLP conditions. Activated sewage sludge was exposed to an
aqueous dispersion of the test item at nominal concentrations of 10, 100
and 1000 mg/L for a period of 3 hours. The effect of Boron
orthophosphate on the respiration of activated sewage sludge gave a 3h-
EC50 of greater than 1000 mg/L. The EC20 (3h) was determined to be ≥
1000 mg/L (nominal). No significant inhibition of bacterial respiration
by Boron orthophosphate up to and including a concentration of 1000 mg/L
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