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Environmental fate & pathways

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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 ethoxylated diamines. 

(Eco) system




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


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.