Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Testing of trichloroethylenefor biodegradability in water and sediments is complicated because of its high volatility.

 

The environmental fate of trichloroethylenein water and sediment will be determined by biotic and abiotic degradation.

 

The QSARs estimated half-lives for biodegradation of trichloroethylenein water and sediment based upon BIOWIN Ultimate Biodegradation are 900 hours (37.5 days) and 8100 hours (337.5 days), respectively. Whereas the half-lives of trichloroethylenefor volatilization from water are estimated as 1.24 hours (for a river) to 4.57 days (for a lake) using EPI Suite software.

 

The QSAR models predicts timeframe within days-weeks for primary biodegradation of trichloroethyleneand weeks-months for its ultimate degradation.

 

The following information is taken into account for hazard / risk / persistency assessment: Overall ready biodegradability prediction provided by a number of BIOWIN (v.4.10) models suggests the trichloroethyleneis not ready biodegradable in the environment.