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Ethylene diamine is a liquid with moderate vapor pressure (13 hPa at 20 °C). A calculated Henrys law constant of 0,6 Pa*m3/mole, giving a partitioning coefficient air/water of 3.2*10-3at temperature 25°C implies that volatilisation from water is low.

The substance has a very low octanol-water partition coefficient (log Kow = -1.6), which also indicates a low potential for uptake in aquatic organisms. The amino groups in Ethylenediamine will occur as charged species (cationic) under pH conditions encountered in the environment. Based on an adsorption study ethylenediamine is likely to sorb strongly to soil. The adsorption potential is more related to the cation-exchange capacity of the soil, than the organic content.

 The substance is not susceptible to hydrolysis or direct photolysis in the aquatic environment. Biodegradation is the dominant process affecting fate of this substance in the environment