Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The environmental fate of tributyl phosphate in water and sediment will be determined by biotic and abiotic degradation.

 

The QSARs estimated half-lives for biodegradation of tributyl phosphate in water and sediment based upon BIOWIN Ultimate Biodegradation are 208.1 hours (8.67 days) and 1873 hours (78 days), respectively. Whereas the half-lives of tributyl phosphate for volatilization from water are estimated as 28.3 days (for a river) to 314.5 days (for a lake) using EPI Suite software.

 

The QSAR models predicts timeframe within hours -days for primary biodegradation of tributyl phosphate and days-weeks for its ultimate degradation.

 

The following information is taken into account for any hazard / risk / persistency assessment: Overall ready biodegradability prediction provided by a number of BIOWIN (v.4.10) models suggests that tributyl phosphate is ready biodegradable in the environment.