Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

When release in water compartment

Due to its low octanol-water partition coefficient (log P=0.57) 1,3-diethyl-2-thiourea (DETU) is not expected to adsorb to sediment and will mainly be present in the aqueous phase. No specific study was performed to assess the hydrolysis of 1,3-diethyl-2-thiourea but it's well recognised that thioureas are stable in aqueous medium. 1,3-diethyl-2-thiourea is thus not expected to undergo hydrolysis in the environment. Furthermore, 1,3-diethyl-2-thiourea was shown to be not biodegradable with a ready biodegradability test.

 

When release in soil and sediment compartments

Due to a low log Kow, the substance should be characterised by a low potential of adsorption. This is supported with an estimated Koc value of 38.85 L/kg (Epiwin software). As a consequence, DETU will not persist in soil and sediment compartment because it will not adsorb on soil and sediment particules.

 

Bioaccumation potential

The partition coefficient of DETU was assessed by shake-flask method: log P = 0.57. This value indicates that DETU is characterised by a low potential of bioaccumulation.