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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Readily biodegradable based on 100 % biodegradation after 20 days in a BOD test according to APHA. 

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Two biodegradation screening test with Ethylene glycol propyl ether following the American Public Health Association (APHA, Washington, D.C., 1985) BOD test design. One study used acclimated inoculum and is not considered for the conclusion. In the other study, mineralisation reached 66% after 10 days with non-acclimated inoculum. While the amount of inoculum is not specified in the report, a typical amount used is 10^5 cells/ml. The amount of inoculum is limited by the loss of sensitivity due to background 02 depletion and by the maximum amount of O2 dissolved in the test solution. From the results of this test it can be concluded that Ethylene glycol propyl ether is readily biodegradable.