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Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Link to relevant study record(s)

Description of key information

The test substance is not readily biodegradable according to OECD criteria

Key value for chemical safety assessment

Additional information

1-N-butylpyridinium heptachlorodialuminate (CAS 67226-45-3) is strongly reactive: in contact with water an exothermic reaction occurs and HCl gas, aluminium oxide and N-butylpyridinium chloride (CAS 1124-64-7) are produced.The post-reaction product N-butylpyridinium chloride was tested in a guideline study investigating the ready biodegradability of this main degradation product. The biodegradation of the substance was tested according to OECD guideline 301B using domestic activated sludge as inoculum. At test termination after 28 days the test substance was degraded by 8 % (Clarke, 2007). Thus, the test substance is not readily biodegradable according to OECD criteria.