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Diss Factsheets

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Administrative data

Link to relevant study record(s)

Description of key information

Half life period of 3-diethylaminophenol in water was observed to be 38 days while in sediment it is 340 days.Based on these half life values it is concluded that 3-diethylaminophenol is readily biodegradable in water where as it is non biodegradable in sediment. The supporting study also shows half life of 3-diethylaminophenol in water and Sediment to be 900 hrs (37.5 days) and 8100 hrs (337.5 days) respectively

Key value for chemical safety assessment

Half-life in freshwater:
38 d
at the temperature of:
25 °C
Half-life in freshwater sediment:
340 d
at the temperature of:
25 °C

Additional information

Based on level III fugacity model the half life period of 3-diethylaminophenol was estimated. Half life period of 3-diethylaminophenol in water was observed to be 38 days while in sediment it is 340 days.Based on these half life values it is concluded that 3-diethylaminophenol is readily biodegradable in water where as it is non biodegradable in sediment. 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. The supporting study also shows half life of 3-diethylaminophenol in water and Sediment to be 900 hrs (37.5 days) and 8100 hrs (337.5 days) respectively

Media

Half-Life (days)

Percent in
Each Medium

Water

38

  17%

Sediment

340

  0%

Media

Half life

(hrs)

Percent in medium

Emission

(kg/hr)

 

Water

900

17.7%

 

1000

Sediment

8100

0.363%

 

0