Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The inherent biodegradability of N,N-dimethylisopropylamine (DMIPA) has been evaluated according to OECD 302B guideline using activated sludge taken from a BASF waste water treatment plant treating industrial sewage (study report, 1981). The substance has been found to be not easily eliminated from water since only 29% of degradation (DOC removal) was observed after 28days.

DMIPA can be considered as not inherently biodegradable.

As a supporting study, the readily biodegradability of DMIPA was evaluated according to ISO 7827 (Evaluation in an Aqueous Medium of the "Ultimate" Aerobic Biodegradability of Organic Compounds - Method by Anlaysis of Dissolved Organic Carbon (DOC)). The substance has been found to be not readily biodegradable with a maximum degradation of 5% obtained after 14 days.

A test performed on an analogue substance, ethyldiisopropylamine (EDIPA CAS 7087 -68 -5), was also used as a supporting study. The biodegradability of EDIPA has been evaluated according to OECD 301D guideline. After 28 days, the biodegradation of EDIPA was 2% and thus, similarly to DMIPA, EDIPA was considered as not readily biodegradable.