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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Readily biodegradable. The test substance exceeded the pass level of 60% within 28 days in two ready biodegradability tests. The  10-day window criterion was met in both studies. 

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The ready biodegradation potential of the test substance, Amyl salicylate, was determined using the OECD guideline 301F over a test period of 28-days (key study). Amyl salicylate attained 86% biodegradation after 28-days under the conditions of the test. Biodegradation started on day 2 and reached 80% at the end of the 10-day window. Thus, Amyl salicylate is considered to be readily biodegradable.

The substance was exposed to innoculum, prepared from predominantly domestic sewage, at nominal concentration of 100mg/L at approximately 22 degC. A further similar test sample was used as a toxicity control, which attained greater than 80% degradation after 28-days, thus confirming the non-inhibitory effect of the test substance on the innoculum.

In a supporting CO2 evolution ready biodegradation study, the substance attained 81.3% degradation within 28-days in a CO2 evolution ready biodegradation study. The 10 day window criterion was also met.