Registration Dossier

Environmental fate & pathways

Biodegradation in soil

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The results of the Ready Biodegradability tests indicate that etherdiamines are inherently biodegradable.There is needer any exposure to the soil compartment within registered uses. The Kpsoil was determined as 2010 L/kg. The suggested maximum half-life for an inherently degradable substance with a Kpsoil in the range >1000 L/kg is 30000 days for soil and sediment (at 12 ºC). These values are considered as extremely conservative but in the absence of measured data will be used in the exposure assessment as a worst-case. The half-life of the bioavailable fraction of N-[3 -(tridecyloxy)propyl]-1,3 -propane diamine, branched monoacetate and N-[3 -(tridecyloxy)propyl]-1,3 -propane diamine branched in the water phase of soils is expected to be in the order of a few days, which is based on experiments with dialkyldimethylammonium salts (van Ginkel et al, 2003).

Key value for chemical safety assessment

Half-life in soil:
3 000 d
at the temperature of:
12 °C

Additional information

The Kpsoil was determined as 2010 L/kg. The suggested maximum half-life for an inherently degradable substance with a Kpsoil in the range >1000 L/kg is 30000 days for soil and sediment (at 12 ºC). These values are considered as extremely conservative but in the absence of measured data will be used in the exposure assessment as a worst-case. The half-life of the bioavailable fraction of N-[3 -(tridecyloxy)propyl]-1,3 -propane diamine, branched monoacetate and N-[3 -(tridecyloxy)propyl]-1,3 -propane diamine branched in the water phase of soils is expected to be in the order of a few days, which is based on experiments with dialkyldimethylammonium salts (van Ginkel et al, 2003).