Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Hydrolysis:

In accordance with REACH Regulation 1907/2006/EC Annex IX section 9.2.1.2, a study on abiotic degradation is required as benzyldimethylamine is not ready biodegradable. Based on the structure of benzyldimethylamine no hydrolysis is expected as no hydrolysable groups are present. The substance can thus be regarded as hydrolytically stable. This is further supported by its application and use in aqueous solution. In addition, a calculation with EPIWIN v4.00 also predicts no hydrolysable groups.

Biodegradation:

Benzyldimethylamine was shown to be not ready biodegradable in different ready biodegradability tests using non-adapted sludge (MITI, 1992). With an adapted sludge the substance was 100% ready biodegradable (Bayer AG, 1979). In addition, Benzyldimethylamine was shown to be 100% inherently biodegradable after 13 days and fulfilled the criterion for inherent, ultimative biodegradability (BASF, 1987).

Bioaccumulation:

Benzyldimethylamine determined to be non or not highly bioaccumulative. The BCF at a concentration of 500 µg/L is 2.1 to 6.4 , and at a concentration of 50 µg/L the BCF is < 6.2 to 22. The study was conducted according to "Bioaccumulation test of chemical cubstance in fish and shellfish", order of the prime minister, the minister of health and welfare, the minister of international trade and industry No 1, Japan, 1974 (MITI-Online, MITI-Buch, 1992).

Adsoption/desorption

In accordance with column 2 of REACH Annex VIII, a Adsoprtions-/Desporptions-Screening test (required in section 9.3.1) does not need to be conducted as benzyldimethylamine has a low potential for adsorption (log Pow = 1.98). Log Koc values of 2.457 (MCI method) respectively 1.955 (Kow method) were calculated by KOCWIN v2.00 for completeness sake.