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Environmental fate & pathways

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Description of key information

Lactic acid is readily biodegradable.

Additional information

Lactic acid is predicted to be readily biodegradable by the validated QSAR model BIOWIN v4.10 and by an experimental study conducted according to OECD TG 301B. Supportive experimental studies (BOD5 and COD measurements), which are not satisfying recent standards for ready biodegradability tests, allow the conclusion that lactic acid is readily biodegradable though not fulfilling the 10-d window criterion. As product from the lactic acid fermentation it naturally occurs as well in animal cells as in bacteria, which also provide enzymes metabolizing both enantiomers. Overall, lactic acid can be considered to be readily biodegradable.

As lactic acid is readily biodegradable, no tests for biodegradation in water and sediment or in soil are necessary.

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