Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

The distribution in a sewage treatment plant (STP) has been estimated using the SimpleTreat model (implemented in Chesar 3.5/EUSES 2.1.2), see table below. Due to the very rapid hydrolysis of the parent substance, the distribution calculation is done for the hydrolysis products.

Table: Distribution modelling for STP

 

N-[3-(Dihydroxymethylsilyl)propyl]ethylenediamine

Methanol

Units

Fraction of emission directed to water by STP

 99.99

 12.62

[%]

Fraction of emission directed to air by STP

 6.09E-11

 0.095

[%]

Fraction of emission directed to sludge by STP

 3.13E-3

 0.037

[%]

Fraction of the emission degraded in STP

 0

 87.24

[%]

N-[3-(Dimethoxymethylsilyl)propyl]ethylenediamine hydrolyses very rapidly in contact with water to form N-[3-(dihydroxymethylsilyl)propyl]ethylenediamine and methanol. N-[3-(Dihydroxymethylsilyl)propyl]ethylenediamine is not expected to undergo any significant biodegradation, has low Henry’s Law constant and low log Kow/log Koc. Therefore, water is the main compartment to which it is expected to partition in a sewage treatment plant.

Additional information

Categories Display