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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

For 0.84 mg/l of Menthol D Dist a maximum biodegradability of 92% was reached after 14 days of incubation. 
For 2.01 mg/l of Menthol D Dist a maximum biodegradability of 76% was reached after 21 days of incubation.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The biodegradability of D-menthol has been determined in Closed Bottle test (OECD 301D)[i]. The test fulfilled the conditions of validity given by the Guidelines and resulted at 21 days to a mean maximum biodegradability of 76%. Therefore, D-menthol is regarded to be readilty biodegradable. The result is very similar to those obtained on L-menthol following the same protocol[ii]. This reinforces the read-across approach in for all the other parameters. 


[i]Determination of the ready biodegradability of Menthol D Dist in a Closed Bottle Test (OECD Guideline N° 301D, EU C.4-E) – TNO Chemistry [Sponsor : Haarmann & Reimer GmbH – date 29 January 2003]

[ii]Determination of the ready biodegradability of Menthol L Dist in a Closed Bottle Test (OECD Guideline N° 301D, EU C.4-E) – TNO Chemistry [Sponsor : Haarmann & Reimer GmbH – date 8 November 2008]