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Biodegradation in water: screening tests

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Description of key information

Ready Biodegradability of bis(2,3-epoxypropyl) terephthalate in a Manometric Respirometry Test

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The test item bis(2,3-epoxypropyl) terephthalate contains no nitrogen, therefore the evaluation of biodegradation has to be based on the ThODNH4. The criterion for ready biodegradability under the conditions of a manometric respirometry test is the 10-day window, describing the period between reaching at least 10% degradation and 60% degradation. This period should not exceed 10 days.

The mean biodegradation after 28 days of bis(2,3-epoxypropyl) terephthalate was 83% (ThODNH4); the 10 day window criterion was passed from day 2 until day 12.

Therefore, bis(2,3-epoxypropyl) terephthalate is considered to be readily biodegradable.