Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

The substance is readily biodegradable according to OECD criteria.

Additional information

There is no available experimental data on the biodegradability of the reaction product of 2,4-Dinitrotoluene and 2,6-Dinitrotoluene and hydrogen, deaminated (MCHAmix, EC 943 -517 -5). Therefore read-across approach was applied to its constituent, 2-Methylcyclohexylamine (CAS 7003-32-9) and to the similar compound 2,6-Dimethylcyclohexylamine (CAS 6850-63-1).

In order to assess the biodegradation potential of the test substance, an OECD 301C study was performed with source chemical 2-Methylcyclohexylamine (CAS 7003-32-9) (BASF AG, 1988). According this study the value of DOC removal was 88% within 24 days. Another study with the cemical 2,6-Dimethylcyclohexylamine (CAS 6850-63-1) showed the value of DOC removal to be 95% within 28 days. Both substances are readily biodegradable, according OECD criteria.

Based on the data from the read-across approach the target substance MCHAmix is considered to be readily biodegradable.

Experimental data on the biodegradation in water, sediment and soil of the reaction product of MCHAmix (EC943 -517 -5) are not available. Based on the screening tests on biodegradability (5.2.1) it is expected that the MCHAmix is biodegraded through growth linked processes.