Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Currently viewing:

Administrative data

Description of key information

Additional information

While the submission substance is highly hydrophilic (log Pow <=0.4) and does not show surface active properties, aliphatic amines are strong bases and are protonated at environmental pH and, in consequence, due to the positive charge are prone to bind on negatively charged solid matter. This is demonstrated by the results from the available adsorption-desorption study (OECD 106): The bifunctional aliphatic amine HMD (2 amino groups) turned out to bind to soil and - to a lower level - sediment. In spite of its adsorptive behaviour, it was shown to be readily biodegradable fulfilling the 10-day window requirement with total nitrification within 28 days. From these properties, rapid degradation in sewage treatment plants or the environment is expected, which would lead to overall low environmental concentrations. In addition, due to adsorption on suspended matter or soil, bioavailable concentrations in the aquatic phase are expected to be very low. Due to the observed rapid mineralization, accumulation in soil or sediment is not to be expected.