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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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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

Under test conditions, the test substance was found to be not readily biodegradable.

Key value for chemical safety assessment

Additional information

The ready biodegradability of the test substance was determined in accordance with the OECD Guideline for Testing of chemicals 301F. Due to the low water solubility of the test item (3 mg/l) the test item was spread across the surface of a glass coverslip and the coverslip added into the inoculated mineral medium. By day 12 the toxicity control was found to have 38% biodegradation, indicating that the test item is not inhibitory to the degrading organisms. Under the test conditions, the substance was found to be not readily biodegradable after 28 days (average biodegradation of 6% seen in two replicates). However, it should be noted that the substance is poorly water soluble, and is a petroleum UVCB, indicating that the majority of the substance will be in the insoluble phase and unavailable to degrading organisms, as such, and considering the organic nature of the substance, this result is considered to be an underestimate of the true biodegradation potential of the substance.