Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

According to a Mackay Level I model calculation the main target compartments for N,N,N',N'-tetrakis-2-hydroxyethyl)hexanediamide will be the hydrosphere (99.9999 %). The calculated Henry’s Law constant of 0.0000008 Pa m³/mol at 20 °C indicates very low volatility of N,N,N',N'-tetrakis-2-hydroxyethyl)hexanediamide from surface waters. With a calculated Koc of 12.63 l/kg, the sorption potential of N,N,N',N'-tetrakis-2-hydroxyethyl)hexanediamide to soil or sediment organic matter is expected to be very low (Blume scale).


The QSAR calculated rate constant for the OH sensitized photodegradation of N,N,N',N'-tetrakis-2-hydroxyethyl)hexanediamide is approximately 7.62E-11 cm³/(molecule * s). At 500,000 OH radicals / cm³ (approximate 24-hour mean in central Europe) this corresponds to a half-life of 5.1 hours. Hydrolytical degradation in surface waters is expected to be relevant only in basic environments with a half-life of 174 days at pH 9 and 25 °C. Inherent but not ready biodegradation of the substance was observed in guideline studies. In view of the distribution behaviour of N,N,N',N'-tetrakis-2-hydroxyethyl)hexanediamide biodegradation is expected to be the predominant mechanism of removal from the environment.