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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

There are several studies available on ready biodegradability. These were conducted according to OECD guideline 301 B-E. Four results clearly indicate that MCA is readily biodegradable, i.e. 60 -70% within a time-window of 10 -14 days. This result is also supported by the inherent biodegradation results. In all inherent test MCA was (nearly) 100% biodegraded between 6 and 28 days.

One biodegradability study performed under anaerobic conditions (Egli, 1989) showed that MCA is also rapidly degradable under these conditions. Measured rates of reduction of 86 -90% within 2 days at 34 °C were found.

Under aerobic as well as anaeroobic conditions MCA is fully mineralized.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable
Type of water:

Additional information