Registration Dossier

Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Additional information

N-[3-(trimethoxysilyl) propyl]butylamine hydrolyses in contact with water to the corresponding 3-(N-butylamino)propylsilanetriol, which have low log Kow values (<3) and thus have low potential for bioaccumulation. Therefore, in accordance with Column 2 of REACH Annex IX, the adsorption/desorption screening test does not need to be conducted for the silanol hydrolysis products.

For environmental exposure assessment, adsorption has been estimated for the silanol hydrolysis product based on log Kow using TGD (Technical Guidance Document) non-hydrophobics equation.The calculated log Kocis 0.37 (Kocof 2.38) (KOCWIN, EPISUITE 4.10).