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Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Description of key information

Half life period of 2-(2-chloroethoxy)ethanol in water was observed to be 15 days while in sediment it is 140 days.Based on these half life values it is concluded that 2-(2-chloroethoxy)ethanol is readily biodegradable (non persistent) in water where as it is non biodegradable (persistent) in sediment. However it can be observed that 2-(2-chloroethoxy)ethanol does not diffuse in the sediment medium since its percentage in the sediment medium is reported to be 0% and hence persistence in the sediment medium is not likely to be critical

Key value for chemical safety assessment

Half-life in freshwater:
15 d
Half-life in freshwater sediment:
140 d

Additional information

Based on level III fugacity model the half life period of 2-(2-chloroethoxy)ethanol was estimated

Half life period of 2-(2-chloroethoxy)ethanol in water was observed to be 15 days while in sediment it is 140 days.Based on these half life values it is concluded that 2-(2-chloroethoxy)ethanol is readily biodegradable (non persistent) in water where as it is non biodegradable (persistent) in sediment. However it can be observed that 2-(2-chloroethoxy)ethanol does not diffuse in the sediment medium since its percentage in the sediment medium is reported to be 0% and hence persistence in the sediment medium is not likely to be critical

Media

Half life

(days)

Percent in Medium

Water

15

38%

sediment

140

0%