Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Biotic degradation

Two ready biodegradability test results are available for Ethanol, 2,2’-[[3-[2-hydroxyethyl]amino]propyl]iminobis-, N-(coco alkyl) derivatives and ethanol, 2,2’-[[3-[2-hydroxyethyl]amino]propyl]-iminobis-, N-(hydrogenated tallow alkyl) derivatives. The biodegradation percentages reached at day 28 in Closed Bottle test, and Sturm test were 61 and 63. ethanol, 2,2’-[[3-[2-hydroxyethyl]amino]propyl]iminobis-, N-alkyl derivatives should therefore be classified as readily biodegradable. 

 

The Table below summarizes half-lives derived through default values and a simulation study.

Table Summary of degradation rate constants in various (eco) systems based the ready biodegradability of primary fatty amine ethoxylates.

 

(Eco) system

Method

Result

 

Surface water (fresh)

TGD default value

15 days half-life

Surface water (fresh) sediment

TGD default value

30000 days half-lifea

Marine water

TGD default value

50 days half-life

Marine water sediment

TGD default value

30000 days half-lifea

Soils

TGD default value

30000 days half-lifea

Degradation in sewage treatment plants

Determined in bioreactors

>99.97% removal primarily by biodegradation

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