Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Only one valid ready biodegradability test result for N-[3-(tridecyloxy)propyl]-1,3-propane diamine,branched monoacetate and N-[3-(tridecyloxy)propyl]-1,3-propane diamine branched is available because these substances are extremely toxic to micro-organisms. N-[3-(tridecyloxy)propyl]-1,3-propane diamine,branched monoacetate and N-[3-(tridecyloxy)propyl]-1,3-propane diamine branched did not cause a reduction in the endogenous respiration in the presence of 16 mg/L of humic acid. N-[3-(tridecyloxy)propyl]-1,3-propane diamine,branched monoacetate and N-[3-(tridecyloxy)propyl]-1,3-propane diamine branched was biodegraded 8% at day 28 in the Closed Bottle test. In the prolonged Closed Bottle test (enhanced biodegradability testing) a biodegradation percentage of 63 was achieved at day 60. Hence this substance should be classified as not persistent.

 

 

Table Summary of degradation rate constants in various (eco)systems based the ready biodegradability of N-[3-(tridecyloxy)propyl]-1,3-propane diamine, branched monoacetate and N-[3-(tridecyloxy)propyl]-1,3-propane diamine branched

(Eco)system

Method

 

Surface water (fresh)

TGD default value

<40 days half-life

Surface water (fresh) sediment

TGD default value

30000 days half-life

Marine water

TGD default value

<60 days half-life

Soils

TGD default value

30000 days half-lifea

Degradation in sewage treatment plants

Determined in bioreactors

99.8% removal primarily by biodegradation

aHalf-life of the fraction dissolved in the water phase is expected to in the order of a few days.