Registration Dossier
Registration Dossier
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EC number: 629-720-9 | CAS number: 1219826-66-0
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.
(Eco)system |
Method |
|
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 |
Soils |
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.
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