Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Only one valid ready biodegradability test result forbranched triamines(y-amines) isavailable because these substances are very toxic to micro-organisms. All aspects important for achieving a ready biodegradability test result with these substances i.e. 1) ultimate (complete) biodegradation (demonstrated in (S)CAS test with a related substance, linear triamine, and through read across with linear triamine C12-18 and intermediates) 2) high rates of degradation (through read across with linear triamine C12-C18 and branched ltriamine dodecyl and 3) occurrence of competent micro-organisms in unacclimated ecosystems (through read across with linear triamine C12-C18 and branched triamine dodecyl are fulfilled. The branched triamine C16-18 should therefore be classified as readily biodegradable. 



Table Summary of degradation rate constants in various (eco)systems based the ready biodegradability ofbranched triamine C16-18.




Surface water (fresh)

TGD default value

15 days half-life

Surface water (fresh) sediment

TGD default value

30000 days half-life

Marine water

TGD default value

50 days half-life

Marine water sediment

TGD default value

30000 days half-life


TGD default value

30000 days half-lifea

Degradation in sewage treatment plants

Determined in bioreactors

>99.9% removal primarily by biodegradation

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