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Environmental fate & pathways

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According to a Mackay Level I model calculation, the main target compartment for decamethylenediamine will be the hydrosphere (99.95 %). The calculated Henry’s Law constant of 0.00058 Pa m³/mol at 20 °C indicates low volatility of decamethylenediamine from surface waters. With a Koc of 158489 a very high sorption potential is expected (Blume scale).

 

The QSAR calculated rate constant for the OH sensitized photodegradation of decamethylenediamine is approximately 74.67E-12 cm3/(molecule * s). At 500,000 OH radicals / cm3 (typical for central Europe), this corresponds to a half-life of 5.2 hours (24-hour days). Hydrolysis is not expected to be a relevant process in the environment. Ready biodegradation was observed and is expected to be the predominant process for the removal of decamethylenediamine from the environment. The partition coefficient n-octanol / water of log Kow = 0.3 indicates negligible potential for bioaccumulation.