Registration Dossier
Registration Dossier
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EC number: 629-716-7 | CAS number: 1211950-04-7
Endpoint summary
Administrative data
Description of key information
Additional information
Only a few valid ready biodegradability test results for N,N,N’,N’,N’’-pentamethyl-N-C16-18 (even numbered) C18 unsat.-alkyl-1,3-propanediammonium chloride are available because this substance is very toxic to micro-organisms. N,N,N’,N’,N’’-pentamethyl-N-C16-18 (even numbered) C18 unsat.-alkyl-1,3-propanediammonium chloride tested in the presence of silica gel was biodegraded 28% at day 28 in the Closed Bottle test indicating partial degradation. Other data prove that the alkyl chain of N,N,N’,N’,N’’-pentamethyl-N-C16-18 (even numbered) C18 unsat.-alkyl-1,3-propanediammonium chloride is readily converted into water-soluble non-toxic nitrogen containing substances. These biodegradation products are persistent in OECD 301 (ready biodegradability) and 302 (inherent biodegradability) tests. This means that the half-life for the intermediate in all environmental comparts can be set to ∞ as a worst-case.
Table Summary of degradation rate constants of the parent compound N,N,N’,N’,N’’-pentamethyl-N-C16-18 (even numbered) C18 unsat.-alkyl-1,3-propanediammonium chloridein various (eco)systems.
(Eco)system |
Method |
|
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 |
>99.9% removal primarily by biodegradation |
aHalf-life of the fraction dissolved in the water phase is expected to be in the order of a few days.
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