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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

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Description of key information

RA_CAS 67-48-1_Readily biodegradability_DIN 38 409 part 43/H5 (Determination of Biological Oxygen Demand; BOD): 75 % degradation within 5 days - readily biodegradable 

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Choline hydrogen carbonate was not investigated experimentally for its potential to biodegrade. A valid experimental result for the read-across substance Choline chloride (CAS 67-48-1) is available concluding that the substance is readily biodegradable. Based on the structural similarities and substance characteristics of both, the same result can be presumed for the target substance. For justification and further details of this procedure, please refer to the separate read-across statement by Chemservice S.A. (2013). In general, choline is a naturally occurring compound and the potential to readily biodegrade can be foreseen for both substances. The available experiment, which was conducted with Choline chloride, was performed according to DIN 38409 (Part 43) and H5 (Detection of biochemical oxygen demand, BOD) (BASF AG, 1984). Biodegradability was calculated by dividing the measured BOD5 by the calculated ThOD (Theoretical Oxygen Demand). Thereby, Choline chloride attained 75 - 90 % degradation within 5 days.