Registration Dossier

Ecotoxicological information

Toxicity to microorganisms

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The test item Paradimethoxybenzene was investigated for its ready biodegradability in a manometric respirometry test over 28 days according to EU Commission Directive 92/69 EEC, C.4-D (1992) and OECD Guideline for Testing of Chemicals No. 301 F (1992).
The percent biodegradation of the test item was calculated based on the theoretical oxygen demand (ThOD) of 2.20 mg O2/mg test item.
Paradimethoxybenzene was found to be biodegradable under the test conditions within 28 days. Moreover, the pass level for ready biodegradability, i.e. biodegradation of at least 60% of the ThOD in a 10-day window within the 28-day period of the test, was reached.
Consequently, Paradimethoxybenzene was found to be readily biodegradable under the test conditions within28 days and had no inhibitory effect on the activity of activated sludge microorganisms at the tested concentration of 100 mg/L.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
100 mg/L

Additional information