Registration Dossier
Registration Dossier
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EC number: 202-770-5 | CAS number: 99-59-2
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
The half-life period of 5-nitro-o-anisidine in water is estimated to be 912 h (38 days) while in sediment it is 8160 h (340 days).
Key value for chemical safety assessment
- Half-life in freshwater:
- 912 h
- at the temperature of:
- 25 °C
- Half-life in freshwater sediment:
- 8 160 h
- at the temperature of:
- 25 °C
Additional information
Based on the Level III Fugacity Model, the half-life period of 5 -nitro-o-anisidine in water is estimated to be 38 days, while in sediment it is 340 days. Based on this value, it is concluded that 5 -nitro-o-anisidine is biodegradable in water only. Also from the above halflifes it can be concluded that 5 -nitro-o-anisidine is not persistent in water and persistent in sediment medium. However, since there is no diffusion of the substance in the sediment as evident from the reported data (0% in sediment) and hence persistence in the sediment compartment is not likely to be critical.
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