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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Screening and/or higher tier studies investigating the adsorption potential of ortho-phthalaldehyde do not need to be conducted due to the low octanol water partition coefficient of log Kow = 0.99 of the substance. 

The adsorption/desorption coefficient of ortho-phthalaldehyde used for the environmental risk assessment was estimated to be approximately 10 L/kg using the QSAR model KOCWIN v2.00 (SMILES: O=Cc1ccccc1(C=O)).

Key value for chemical safety assessment

Koc at 20 °C:
10

Additional information