Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Phototransformation in air


After evaporation or exposure to air, the test item (represented by its branched and linear isomers) will be rapidly degraded by photochemical processes.


 


Hydrolysis


Hydrolysis is not expected due to the absence of hydrolysable groups.In addition, the substance is not soluble in water.


 


Biodegradation


The substance is not readily biodegradable (according to OECD criteria).


 


Bioaccumulation


Significant accumulation of the substance (represented by by its branched and linear isomers) in organisms is not to be expected.


 


Adsorption


Adsorption of the substance (represented by its branched and linear isomers) to the solid soil phase is expected.


 


Henry's Law constant


The substance will slowly evaporate from the water surface into the atmosphere. However, as it will be completely ionized under environmentally relevant conditions, the evaporation potential is most likely overestimated. 


 


Distribution modelling


Over time, the substance will distribute mainly into the compartments soil (49.5%) and sediment (50.1%).

Additional information

Di-tridecylamine, branched and linear (CAS 101012-97-9) is a mixture of (predominantly) di-alkyl amines with varying alkyl-chain length in a range between C24 and C27. The main fraction consists of isomers of di-tridecylamines (C26H55N). Secondary fractions were detected to have chain lengths of C13 and C39. The following structures and relative fractions were proposed:


 


Table 1: Composition of DTDA (CAS 101012-97-9) according to analytical report 17Y36412 (BASF SE, 2017)














































Isomers



Quantity



Secondary fraction: Isomers of tridecyl amines



 



Isomers of C13H29N



0.9 %



Main fraction: Homologues of Dialkyl amines



 



Isomers of C24H51N



< 0.1 %



Isomers of C25H53N



0.4 – 0.5 %



Isomers of C26H55N



92 – 94 %



Isomers of C27H57N



0.25 – 0.35 %



Secondary fraction: Homologues of trialkyl amines



 



Isomers of C39H79N and C39H81N



< 5.2 %